Updated on 2024/09/27

Information

 

写真a

 
HATA SATOSHI
 
Organization
Faculty of Engineering Sciences Department of Advanced Materials Science and Engineering Professor
The Ultramicroscopy Research Center (Joint Appointment)
School of Engineering (Joint Appointment)
Interdisciplinary Graduate School of Engineering Sciences Department of Interdisciplinary Engineering Sciences(Joint Appointment)
Title
Professor
Contact information
メールアドレス
Tel
0925837580
Profile
Transmission electron miscroscopy for materials science Nanostructure characterization of advanced structural and functional materials Education of electron microscopy Electron tomography

Research Areas

  • Nanotechnology/Materials / Metallic material properties

  • Nanotechnology/Materials / Structural materials and functional materials

  • Nanotechnology/Materials / Nanomaterials

  • Nanotechnology/Materials / Nanobioscience

Degree

  • Dr. Eng.

Research History

  • Kyushu University Faculty of Engineering Sciences Professor

    2015 - Present

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  • - Research Associate,

    1994

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  • Interdisciplinary Graduate Scool of

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  • Engineering Sciences,

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Education

  • Kyushu University   Graduate School, Division of Integrated Science and Engineering   Department of Materials Science and Technology

    - 1994

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  • Kyushu University

    - 1994

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    Country: Japan

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  • Kyushu University   School of Engineering

    - 1992

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    Country: Japan

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  • Kyushu University   Faculty of Engineering

    - 1992

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Research Interests・Research Keywords

  • Research theme:Electron microscope

    Keyword:Electron microscope

    Research period: 2024

  • Research theme:Electron tomography

    Keyword:Electron tomography

    Research period: 2024

  • Research theme:Steel

    Keyword:Steel

    Research period: 2024

  • Research theme:金属材料組織

    Keyword:金属材料組織

    Research period: 2024

  • Research theme:Transmission electron microscopy

    Keyword:Transmission electron microscopy

    Research period: 2024

  • Research theme:Dislocation

    Keyword:Dislocation

    Research period: 2024

  • Research theme:Scanning transmission electron microscopy

    Keyword:Scanning transmission electron microscopy

    Research period: 2024

  • Research theme:Specimen holder

    Keyword:Specimen holder

    Research period: 2024

  • Research theme:Order-disorder transformation

    Keyword:Order-disorder transformation

    Research period: 2024

  • Research theme:Phase transformation

    Keyword:Phase transformation

    Research period: 2024

  • Research theme:Nanostructural analysis

    Keyword:Nanostructural analysis

    Research period: 2024

  • Research theme:Nanocharactarization of materials

    Keyword:Nanocharactarization of materials

    Research period: 2024

  • Research theme:Tomography

    Keyword:Tomography

    Research period: 2024

  • Research theme:Metal Physics

    Keyword:Metal Physics

    Research period: 2024

  • Research theme:Three-dimensional

    Keyword:Three-dimensional

    Research period: 2024

  • Research theme:Nanostructural analysis of Fe-based superconductors

    Keyword:Fe-based superconductors

    Research period: 2019.4

  • Research theme:Nanostructural analysis of advanced Mg alloys

    Keyword:Advanced Mg alloys

    Research period: 2019.4

  • Research theme:Nanostructural analysis using scanning precession electron diffraction (SPED) automated crystal orientation mapping (ACOM)

    Keyword:automated crystal orientation mapping (ACOM)

    Research period: 2012.4

  • Research theme:Nanostructural analysis of pearlitic steels

    Keyword:Pearlitic steels

    Research period: 2012.4

  • Research theme:Study of bulk nanometals

    Keyword:ultrafine grains, severe plastic deformation, grain boundary, crystal defects、electron microscopy

    Research period: 2010.4

  • Research theme:Microstructural analysis of Bi-based superconducting materials

    Keyword:superconducting properties, crystal defects、electron microscopy

    Research period: 2010.4

  • Research theme:Advanced heat resistant steel

    Keyword:heat resistant steel

    Research period: 2007.4 - 2015.3

  • Research theme:Si-based semiconducting materials for new devices

    Keyword:Si semiconductor device

    Research period: 2007.4 - 2012.3

  • Research theme:Electron tomography for crystalline materials

    Keyword:electron tomography, 3D, crystalline material

    Research period: 2004.1

  • Research theme:Microstructure in bone tissue studied by transmission electron microscopy

    Keyword:bone, tissue, apatite

    Research period: 2003.1 - 2010.3

  • Research theme:Microstructure and mechanical properties of Fe-Cu alloy

    Keyword:Fe-Cu alloy, scanning transmission electron microscopy

    Research period: 2003.1

  • Research theme:Microstructural control of MgB2 superconducting materials

    Keyword:MgB2, superconductivity, film, tape, wire, analytical electron microscopy

    Research period: 2003.1

  • Research theme:Microstructure in TiAl alloys

    Keyword:Microstructure TiAl superstructure ordering

    Research period: 2001.1

  • Research theme:ALCHEMI study of multi-component alloys

    Keyword:ALCHEMI, multi-component alloy

    Research period: 1999.1 - 2003.3

  • Research theme:Rapidly solidified Ti-Al based alloys studied by transmission electron microscopy

    Keyword:PREP, Ti-Al-Mo alloy, ball milling

    Research period: 1996.1 - 2009.3

  • Research theme:Short-range order in Ni-Mo-based alloys

    Keyword:short-range order, Ni-Mo alloy, HRTEM, Monte Carlo simulstion

    Research period: 1994.1

Awards

  • 学術貢献賞(浅田賞)

    2021.3   日本鉄鋼協会   透過電子顕微鏡法による結晶欠陥の3次元再構築

  • 日本顕微鏡学会瀬藤賞(学会賞)

    2020.5   日本顕微鏡学会  

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    透過型電子顕微鏡法による結晶材料3次元組織の再構築に関する研究

  • 平成29年度軽金属論文賞

    2017.11   一般社団法人軽金属学会  

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    Al-Mg-Si合金の再結晶挙動に及ぼすスカンジウムとジルコニウム添加の影響

  • 平成28年度特別研究員等審査会専門委員(書面担当)

    2017.9   日本学術振興会  

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    平成28年度特別研究員等審査会専門委員(書面担当)

  • 第66回金属組織写真賞奨励賞(第2部門:走査電子顕微鏡部門)

    2016.3   日本金属学会  

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    SEM電子線チャネリングコントラスト法を利用した広範囲転位密度マッピング

  • 研究活動表彰

    2015.12   九州大学  

  • 日本金属学会第72回功績賞

    2014.3   日本金属学会  

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    金属材料組織観察のための透過電子顕微鏡技法の開発と応用

  • 第1回 日本金属学会 まてりあ論文賞

    2011.11   日本金属学会  

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    電子線トモグラフィーによる格子欠陥の3次元可視化

  • 日本顕微鏡学会第66回学術講演会 優秀ポスター賞

    2010.5   日本顕微鏡学会  

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    高傾斜3軸試料ホルダーとその応用

  • 3rd Place of CLASS 3: Electron Microscopy - Transmission and Analytical, 2009 International Metallographic Contest

    2009.8   International Metallographic Society and ASM International  

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    3D Visualization of Dislocation Arrangements in Austenitic Stainless Steel with Dual-Axis STEM Tomography

  • 第59回日本金属学会金属組織写真賞A部門優秀賞(第1位)

    2009.3   日本金属学会  

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    オーステナイト系ステンレス鋼における全転位の3次元可視化

  • 第34回セラミックスに関する顕微鏡写真展 日本セラミックス協会学術写真賞 優秀賞

    2009.3   日本セラミックス協会  

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    SrAl2O4系応力発光材料に導入された面欠陥の透過型電子顕微鏡観察

  • 第59回日本金属学会金属組織写真賞B部門奨励賞(第3位)

    2009.3   日本金属学会  

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    応力発光材料SrAl2O4:Eu2+における双晶界面の高分解能電子顕微鏡観察

  • 1st Place of CLASS 3: Electron Microscopy - Transmission and Analytical, The International Metallographic Society's 2007 International Metallographic Contest

    2008.8   International Metallographic Society and ASM International  

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    EDS Analysis and Electron Tomography of New Precipitates on Lath Boundaries in 10Cr Ferritic Heat-Resistant Steel with V

  • 第58回日本金属学会金属組織写真賞A部門優秀賞(第1位)

    2008.3   日本金属学会  

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    V添加高強度耐熱鋼におけるラス境界析出物のEDS分析と3次元形態観察

  • 2st Place of CLASS 3: Electron Microscopy - Transmission and Analytical, The International Metallographic Society's 2007 International Metallographic Contest

    2007.8   International Metallographic Society and ASM International  

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    Hybrid Electron Tomography Observation of Phase Separation in Ni-Al-Ti Superalloy

  • 第57回日本金属学会 金属組織写真賞 B部門 入賞(1位)

    2007.3   日本金属学会  

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    Ni-Al-Ti合金におけるγ’析出粒子の相分離組織の3次元TEM解析(Three-dimensional TEM analysis of phase separation of γ' particles in Ni-Al-Ti alloy)

  • 平成18年度コニカミノルタ画像科学奨励賞

    2007.2   コニカミノルタ画像科学振興財団   透過電子顕微鏡を用いた暗視野トモグラフィーによる結晶材料ナノ構造の3次元イメージング

  • 平成18年度コニカミノルタ画像科学奨励賞

    2007.2   コニカミノルタ画像科学振興財団   透過型電子顕微鏡を用いた暗視野トモグラフィーによる結晶材料ナノ構造の3次元イメージング

  • 3rd Place of Micrograph Competition

    2006.9   The 16th International Microscopy Congress  

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    The sleeping woman in the woods

  • 1st Place of CLASS 5: Unique, Unusual, and New Techniques in Microscopy, and Best In Show, Jacquet-Lucas Award of The International Metallographic Society's 2005 International Metallographic Contest

    2005.8   International Metallographic Society and ASM International  

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    Tomographic Dark-Field TEM Observation of Ordered Precipitates in Ni-Mo Alloy

  • 第55回日本金属学会金属組織写真賞A部門佳作賞

    2005.3   日本金属学会  

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    暗視野TEMトモグラフィーによる合金中の規則バリアントの3次元形態観察

  • 第54回日本金属学会金属組織写真賞B部門奨励賞

    2004.3   日本金属学会  

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    単結晶組成傾斜法と集束イオンビーム・マイクロサンプリング法によるAl-rich TiAl中の長周期規則構造の解析

  • 日本電子顕微鏡学会第3回奨励賞 物質系応用研究部門

    2002.5   日本電子顕微鏡学会  

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    高分解能電子顕微鏡像の定量評価による合金の短範囲規則構造の研究

  • 第10回日本金属学会奨励賞 組織部門

    2000.10   日本金属学会  

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    Ni-Mo合金の短範囲−長範囲規則化過程の微視的機構に関する研究

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Papers

  • Commencement of Ordering in Al–0.69Mg–0.31Si Alloy Reviewed International journal

    73   301 - 308   2019.11

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    Early stages of ordering in dilute Al–0.69(at.%)Mg–0.31(at.%)Si alloy, aged at 373 K for 120 h and 7200 h and at 453 K for 20 h, have been studied using scanning transmission electron microscopy techniques. Starting from the solute enrichment in (110)-type parallel planes, merely after 120 h of aging, isothermal growth at 373 K has been observed to lead to the formation of the small-ordered region after 7200 h of aging. Scanning transmission electron microscopy images from the aforesaid three varieties of samples and the corresponding Fourier-transformed images have been the basis to suggest the possible path of evolution of β″ ordering in this dilute alloy. Based on this, the present study reveals the mechanism of formation of silicon pillar, which is the early stage of β″ that transforms to a fully developed β″. This corroborates with the concept of getting the final β″-strengthened product from an under-aged alloy by a suitable heat treatment.

    DOI: 10.1007/s12666-019-01844-4

  • TEM内その場変形トモグラフィー観察システムの開発 Invited Reviewed

    波多聰、佐藤和久、工藤博幸、古河弘光、川本克巳、堀井則孝、加茂勝己、宮崎伸介、權堂貴志、宮崎裕也、斉藤光、村山光宏

    顕微鏡   54 ( 1 )   44 - 48   2019.5

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    DOI: https://doi.org/10.11410/kenbikyo.54.1_44

  • Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te)

    Kazumasa Iida, Yoshihiro Yamauchi, Takafumi Hatano, Kai Walter, Bernhard Holzapfel, Jens Hänisch, Zimeng Guo, Hongye Gao, Haoshan Shi, Shinnosuke Tokuta, Satoshi Hata, Akiyasu Yamamoto, Hiroshi Ikuta

    Science and Technology of Advanced Materials   25 ( 1 )   2024.12   ISSN:1468-6996 eISSN:1878-5514

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    Publishing type:Research paper (scientific journal)   Publisher:Informa UK Limited  

    DOI: 10.1080/14686996.2024.2384829

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  • High-Fidelity Phase-Field Simulation of Solid-State Sintering Enabled by Bayesian Data Assimilation Using In Situ Electron Tomography Data

    Akimitsu Ishii, Akinori Yamanaka, Mizumo Yoshinaga, Shunsuke Sato, Midori Ikeuchi, Hikaru Saito, Satoshi Hata, Akiyasu Yamamoto

    Acta Materialia   278   120251 - 120251   2024.10   ISSN:1359-6454 eISSN:1873-2453

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    DOI: 10.1016/j.actamat.2024.120251

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  • High tolerance of the superconducting current to large grain boundary angles in potassium-doped BaFe2As2

    Takafumi Hatano, Dongyi Qin, Kazumasa Iida, Hongye Gao, Zimeng Guo, Hikaru Saito, Satoshi Hata, Yusuke Shimada, Michio Naito, Akiyasu Yamamoto

    NPG Asia Materials   16 ( 1 )   2024.8   ISSN:1884-4049 eISSN:1884-4057

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    Superconducting magnets based on high-temperature superconductors (HTSs) have become critical components in cutting-edge technologies such as advanced medical applications. In HTSs, weak links of superconductivity are inevitable at high-angle grain boundaries (GBs). Thus, two adjacent grains should be crystallographically aligned within the critical angle (θ<sub>c</sub>), for which the intergrain critical current density (J<sub>c</sub>) starts to decrease exponentially. The θ<sub>c</sub> of several iron-based superconductors (IBSs) is larger than that of cuprates. However, the decreases in both θ<sub>c</sub> and intergrain J<sub>c</sub> under magnetic fields for IBSs are still substantial, hampering their applications in polycrystalline forms. Here, we report that potassium-doped BaFe<sub>2</sub>As<sub>2</sub> (Ba122:K) exhibits superior GB performance to that of previously reported IBSs. A transport J<sub>c</sub> of over 0.1 MA/cm<sup>2</sup> across [001]-tilt GBs with misorientation angles up to θ<sub>GB</sub> = 24° was recorded even at 28 K, which is a required level for practical applications. Additionally, even in an applied magnetic field, θ<sub>c</sub> was unaltered, and the decay of the intergrain J<sub>c</sub> was small. Our results highlight the exceptional potential of Ba122:K for polycrystalline applications and pave the way for next-generation superconducting magnets.

    DOI: 10.1038/s41427-024-00561-9

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    Other Link: https://www.nature.com/articles/s41427-024-00561-9

  • Phyllosilicates with embedded Fe-based nanophases in Ryugu and Orgueil

    Hugues Leroux, Corentin Le Guillou, Maya Marinova, Sylvain Laforet, Jean Christophe Viennet, Bahae Eddine Mouloud, Adrien Teurtrie, Francisco de la Peña, Damien Jacob, Daniel Hallatt, Mario Pelaez Fernandez, David Troadec, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hope A. Ishii, John P. Bradley, Kenta K. Ohtaki, Elena Dobrică, Falko Langenhorst, Dennis Harries, Pierre Beck, Thi H.V. Phan, Rolando Rebois, Neyda M. Abreu, Jennifer Gray, Thomas Zega, Pierre M. Zanetta, Michelle S. Thompson, Rhonda Stroud, Kate Burgess, Brittany A. Cymes, John C. Bridges, Leon Hicks, Martin R. Lee, Luke Daly, Phil A. Bland, Michael E. Zolensky, David R. Frank, James Martinez, Akira Tsuchiyama, Masahiro Yasutake, Junya Matsuno, Shota Okumura, Itaru Mitsukawa, Kentaro Uesugi, Masayuki Uesugi, Akihisa Takeuchi, Mingqi Sun, Satomi Enju, Aki Takigawa, Tatsuhiro Michikami, Tomoki Nakamura, Megumi Matsumoto, Yusuke Nakauchi, Masanao Abe, Satoru Nakazawa, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tomohiro Usui, Toru Yada, Hisayoshi Yurimoto, Kazuhide Nagashima, Noriyuki Kawasaki, Naoya Sakamotoa, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Sei Ichiro Watanabe, Yuichi Tsuda

    Meteoritics and Planetary Science   59 ( 8 )   1947 - 1965   2024.8   ISSN:1086-9379 eISSN:1945-5100

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    Samples were recently collected from the carbonaceous asteroid (162173) Ryugu, by the Japan Aerospace Exploration Agency (JAXA) Hayabusa2 mission. They resemble CI chondrites material, thus showing clear evidence of extensive aqueous alteration attested by the widespread presence of a mixture of serpentine and saponite. We present here a scanning transmission electron microscopy study of the Ryugu dominant lithology of the phyllosilicate matrix at the nanometer scale, which we compare with that of the Orgueil CI chondrite. In both objects, the phyllosilicates are of comparable nature and texture, consisting of a mixture of small-sized crystallites of serpentine and saponite. At the micrometer scale or less, the texture is an alternation of fine and coarse domains. The fine-grained regions are dominated by saponite. In Ryugu, they enclose numerous Fe,Ni nanosulfides, whereas in Orgueil, S- and Ni-rich ferrihydrite is abundant. The coarse-grained regions contain more serpentine and no or little Fe,Ni sulfides or ferrihydrite. Scanning transmission x-ray microscopy at the Fe-L3 edge also reveals that iron valency of phyllosilicates is higher and more homogeneous in Orgueil (~70% Fe3+) than in Ryugu (<50% Fe3+). We interpret the observed textures as being mostly a consequence of aqueous alteration, likely resulting from the replacement by phyllosilicates of submicrometric components, initially agglomerated by a primary accretion. The fine-grained domains may result from the replacement of GEMS (GEMS—glass with embedded metal and sulfides) objects or from other types of nanometric assemblages of silicate and Fe-based nanophases. On the other hand, the coarse-grained regions may correspond to the replacement of anhydrous crystalline silicates of the olivine and pyroxene type. The major difference is the presence of Fe,Ni sulfides in Ryugu and of ferrihydrite and higher iron valency of phyllosilicates in Orgueil. This might be due to long-term terrestrial weathering that would have destabilized the nanosulfides. We also explore an alternative scenario involving more oxidizing hydrothermal conditions on the Orgueil parent body.

    DOI: 10.1111/maps.14101

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  • Transformation Behaviors and Microstructure Modifications in Hydrogen-Charged Ti–Ni Shape Memory Alloy

    Alimzhan Kalbekov, Hiroshi Akamine, Saya Ajito, Eiji Akiyama, Satoshi Hata, Minoru Nishida

    Shape Memory and Superelasticity   2024.6   ISSN:2199-384X eISSN:2199-3858

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    The effect of hydrogen charging duration on the transformation behavior, microstructural evolution, and dynamic microstructural changes associated with thermoelastic martensitic transformation in Ti–Ni shape memory alloy was investigated. Compared with the uncharged specimen, the martensitic transformation start (M<sub>s</sub>) and reverse transformation finish (A<sub>f</sub>) temperatures increased with charging time, whereas the martensitic transformation finish and reverse transformation start temperatures remained almost unchanged. In situ SEM results were consistent with these behaviors. Upon cooling, the transformation progressed from the center to the surface in charged specimens, indicating a higher transformation temperature in the center than the surface. The latent heat of transformation decreased with increasing charging time, quantitatively attributed to an untransformed region consisting of hydrogen-induced martensite and a hydrogen-affected layer. The hydrostatic effect from those layers on the interior B2 phase was proposed as the origin of the increased M<sub>s</sub> and A<sub>f</sub> temperatures.

    DOI: 10.1007/s40830-024-00495-9

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    Other Link: https://link.springer.com/article/10.1007/s40830-024-00495-9/fulltext.html

  • Incipient space weathering on asteroid 162173 Ryugu recorded by pyrrhotite

    Harries, D; Matsumoto, T; Langenhorst, F; Noguchi, T; Miyake, A; Igami, Y; Haruta, M; Seto, Y; Miyahara, M; Tomioka, N; Saito, H; Hata, S; Takigawa, A; Nakauchi, Y; Tachibana, S; Nakamura, T; Matsumoto, M; Ishii, HA; Bradley, JP; Ohtaki, K; Dobrica, E; Leroux, H; Le Guillou, C; Jacob, D; de la Pena, F; Laforet, S; Mouloud, BE; Marinova, M; Beck, P; Phan, VH; Rebois, R; Abreu, NM; Gray, J; Zega, T; Zanetta, PM; Thompson, MS; Stroud, R; Burgess, K; Cymes, BA; Bridges, JC; Hicks, L; Lee, MR; Daly, L; Bland, PA; Zolensky, ME; Frank, DR; Martinez, J; Tsuchiyama, A; Yasutake, M; Matsuno, J; Okumura, S; Mitsukawa, I; Uesugi, K; Uesugi, M; Takeuchi, A; Sun, MQ; Enju, S; Michikami, T; Yurimoto, H; Okazaki, R; Yabuta, H; Naraoka, H; Sakamoto, K; Yada, T; Nishimura, M; Nakato, A; Miyazaki, A; Yogata, K; Abe, M; Okada, T; Usui, T; Yoshikawa, M; Saiki, T; Tanaka, S; Terui, F; Nakazawa, S; Watanabe, SI; Tsuda, Y

    METEORITICS & PLANETARY SCIENCE   59 ( 8 )   2134 - 2148   2024.5   ISSN:1086-9379 eISSN:1945-5100

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    Publisher:Meteoritics and Planetary Science  

    Regolith samples returned from asteroid 162173 Ryugu by the Hayabusa2 mission provide direct means to study how space weathering operates on the surfaces of hydrous asteroids. The mechanisms of space weathering, its effects on mineral surfaces, and the characteristic time scales on which alteration occurs are central to understanding the spectroscopic properties and the taxonomy of asteroids in the solar system. Here, we investigate the behavior of the iron monosulfides mineral pyrrhotite (Fe1−xS) at the earliest stages of space weathering. Using electron microscopy methods, we identified a partially exposed pyrrhotite crystal that morphologically shows evidence for mass loss due to exposure to solar wind ion irradiation. We find that crystallographic changes to the pyrrhotite can be related to sulfur loss from its space-exposed surface and the diffusive redistribution of resulting excess iron into the interior of the crystal. Diffusion profiles allow us to estimate an order of magnitude of the exposure time of a few thousand years consistent with previous estimates of space exposure. During this interval, the adjacent phyllosilicates did not acquire discernable damage, suggesting that they are less susceptible to alteration by ion irradiation than pyrrhotite.

    DOI: 10.1111/maps.14176

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  • In-situ heating-and-electron tomography for materials research: from 3D (in-situ 2D) to 4D (in-situ 3D)

    Satoshi Hata, Shiro Ihara, Hikaru Saito, Mitsuhiro Murayama

    Microscopy   73 ( 2 )   133 - 144   2024.4   ISSN:2050-5698 eISSN:2050-5701

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    DOI: 10.1093/jmicro/dfae008

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  • Microstructure and Its Evolution of Solute-Enriched Stacking Faults in Kink-Deformed Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub>

    Zhao Yifang, Gao Hongye, Guo Zimeng, Egusa Daisuke, Abe Eiji, Hata Satoshi

    MATERIALS TRANSACTIONS   65 ( 3 )   274 - 281   2024.3   ISSN:13459678 eISSN:13475320

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:The Japan Institute of Metals and Materials  

    <p>Microstructure and its evolution of solute-enriched stacking faults (SESFs) in kink-deformed Mg–Zn–Y alloys have been investigated by scanning transmission electron microscopy (STEM). Mass-thickness contrast in annular dark-field (ADF) STEM images and diffraction contrast in weak-beam dark-field (WBDF) STEM images visualized locations of solute-enriched regions and dislocations, respectively. Most of the SESFs are located at or near kink boundaries, and a variety of arrangements and morphology of the SESFs are followed by dislocations with the <i>c</i> component of α-Mg matrix and small-angle lattice rotations along the <i>c</i>-axis as well as the <i>a</i>-<i>b</i> axes. As notable microstructural features of the SESFs, rectangular-shaped and step-shaped arrangements of the SESFs, observed respectively before and after a heat treatment at 573 K for 168 h, were observed in detail, and their formation processes were discussed.</p>

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  • Planar defects and strain distributions in polycrystalline BaFe<inf>2</inf>As<inf>2</inf> superconductors synthesized by mechanochemical methods

    Zimeng Guo, Koki Muraoka, Hongye Gao, Yusuke Shimada, Takaaki Harada, Shinnosuke Tokuta, Yuta Hasegawa, Akiyasu Yamamoto, Satoshi Hata

    Acta Materialia   266   2024.3   ISSN:1359-6454 eISSN:1873-2453

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    In this study, the microstructure of polycrystalline Co-doped BaFe2As2 superconducting bulks was comprehensively analyzed. The synthesis process involved ball milling and subsequent spark plasma sintering (SPS). A strong correlation between the microstructure and synthesis conditions was observed. Specifically, when mechanochemical synthesis of raw metal powders was carried out at a ball milling energy (EBM) of 100 MJ/kg, the resulting Co-BaFe2As2 bulk contained nanograins with a high density of planar defects and exhibited a high critical current density (Jc) under both magnetic and self-fields. The findings suggest that planar defects are one of the influential factors on the superconducting properties. Atomic-resolution microstructural characterization revealed that the planar defects are parallel to (001) and exhibit distinctive atomic arrangements. Atomic-resolution elemental mappings displayed a remarkable barium concentration in planar defects and grain boundaries compared to the BaFe2As2 matrix. Local strain fields were also observed around planar defects, especially near their edges. These nanoscale strain fields could be considered as volumetric pinning centers, and effectively pin flux vortices in the random crystal orientation, thereby increasing Jc in the Fe-based superconducting bulk. Additionally, an extended investigation was performed to include a K-doped BaFe2As2 bulk that exhibits similar planar defects. Based on the results of the microstructural analysis, speculations were mode on the evolution process of the microstructure during the preparation of BaFe2As2 bulks.

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  • Influx of nitrogen-rich material from the outer Solar System indicated by iron nitride in Ryugu samples

    Toru Matsumoto, Takaaki Noguchi, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hikaru Saito, Satoshi Hata, Dennis Harries, Aki Takigawa, Yusuke Nakauchi, Shogo Tachibana, Tomoki Nakamura, Megumi Matsumoto, Hope A. Ishii, John P. Bradley, Kenta Ohtaki, Elena Dobrică, Hugues Leroux, Corentin Le Guillou, Damien Jacob, Francisco de la Peña, Sylvain Laforet, Maya Marinova, Falko Langenhorst, Pierre Beck, Thi H.V. Phan, Rolando Rebois, Neyda M. Abreu, Jennifer Gray, Thomas Zega, Pierre M. Zanetta, Michelle S. Thompson, Rhonda Stroud, Kate Burgess, Brittany A. Cymes, John C. Bridges, Leon Hicks, Martin R. Lee, Luke Daly, Phil A. Bland, Michael E. Zolensky, David R. Frank, James Martinez, Akira Tsuchiyama, Masahiro Yasutake, Junya Matsuno, Shota Okumura, Itaru Mitsukawa, Kentaro Uesugi, Masayuki Uesugi, Akihisa Takeuchi, Mingqi Sun, Satomi Enju, Tatsuhiro Michikami, Hisayoshi Yurimoto, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei Ichiro Watanabe, Yuichi Tsuda

    Nature Astronomy   8 ( 2 )   207 - 215   2024.2   ISSN:2397-3366 eISSN:2397-3366

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    Large amounts of nitrogen compounds, such as ammonium salts, may be stored in icy bodies and comets, but the transport of these nitrogen-bearing solids into the near-Earth region is not well understood. Here, we report the discovery of iron nitride on magnetite grains from the surface of the near-Earth C-type carbonaceous asteroid Ryugu, suggesting inorganic nitrogen fixation. Micrometeoroid impacts and solar wind irradiation may have caused the selective loss of volatile species from major iron-bearing minerals to form the metallic iron. Iron nitride is a product of nitridation of the iron metal by impacts of micrometeoroids that have higher nitrogen contents than the CI chondrites. The impactors are probably primitive materials with origins in the nitrogen-rich reservoirs in the outer Solar System. Our observation implies that the amount of nitrogen available for planetary formation and prebiotic reactions in the inner Solar System is greater than previously recognized.

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  • Influx of nitrogen-rich material from the outer Solar System indicated by iron nitride in Ryugu samples

    Matsumoto Toru, Noguchi Takaaki, Miyake Akira, Igami Yohei, Haruta Mitsutaka, Seto Yusuke, Miyahara Masaaki, Tomioka Naotaka, Saito Hikaru, Hata Satoshi, Harries Dennis, Takigawa Aki, Nakauchi Yusuke, Tachibana Shogo, Nakamura Tomoki, Matsumoto Megumi, Ishii Hope A., Bradley John P., Ohtaki Kenta, Dobrică Elena, Leroux Hugues, Le Guillou Corentin, Jacob Damien, de la Peña Francisco, Laforet Sylvain, Marinova Maya, Langenhorst Falko, Beck Pierre, Phan Thi H. V., Rebois Rolando, Abreu Neyda M., Gray Jennifer, Zega Thomas, Zanetta Pierre-M., Thompson Michelle S., Stroud Rhonda, Burgess Kate, Cymes Brittany A., Bridges John C., Hicks Leon, Lee Martin R., Daly Luke, Bland Phil A., Zolensky Michael E., Frank David R., Martinez James, Tsuchiyama Akira, Yasutake Masahiro, Matsuno Junya, Okumura Shota, Mitsukawa Itaru, Uesugi Kentaro, Uesugi Masayuki, Takeuchi Akihisa, Sun Mingqi, Enju Satomi, Michikami Tatsuhiro, Yurimoto Hisayoshi, Okazaki Ryuji, Yabuta Hikaru, Naraoka Hiroshi, Sakamoto Kanako, Yada Toru, Nishimura Masahiro, Nakato Aiko, Miyazaki Akiko, Yogata Kasumi, Abe Masanao, Okada Tatsuaki, Usui Tomohiro, Yoshikawa Makoto, Saiki Takanao, Tanaka Satoshi, Terui Fuyuto, Nakazawa Satoru, Watanabe Sei-ichiro, Tsuda Yuichi

    Nature Astronomy   8 ( 2 )   207 - 215   2024.2   eISSN:23973366

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    Large amounts of nitrogen compounds, such as ammonium salts, may be stored in icy bodies and comets, but the transport of these nitrogen-bearing solids into the near-Earth region is not well understood. Here, we report the discovery of iron nitride on magnetite grains from the surface of the near-Earth C-type carbonaceous asteroid Ryugu, suggesting inorganic nitrogen fixation. Micrometeoroid impacts and solar wind irradiation may have caused the selective loss of volatile species from major iron-bearing minerals to form the metallic iron. Iron nitride is a product of nitridation of the iron metal by impacts of micrometeoroids that have higher nitrogen contents than the CI chondrites. The impactors are probably primitive materials with origins in the nitrogen-rich reservoirs in the outer Solar System. Our observation implies that the amount of nitrogen available for planetary formation and prebiotic reactions in the inner Solar System is greater than previously recognized.

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  • In situ investigation of an organic micro-globule and its mineralogical context within a Ryugu “sand” grain

    Van T.H. Phan, Pierre Beck, Rolando Rebois, Eric Quirico, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hope A. Ishii, John P. Bradley, Kenta K. Ohtaki, Elena Dobrică, Hugues Leroux, Corentin Le Guillou, Damien Jacob, Francisco de la Peña, Sylvain Laforet, Maya Marinova, Falko Langenhorst, Dennis Harries, Neyda M. Abreu, Jennifer Gray, Thomas Zega, Pierre M. Zanetta, Michelle S. Thompson, Rhonda Stroud, Jérémie Mathurin, Alexandre Dazzi, Emmanuel Dartois, Cécile Engrand, Kate Burgess, Brittany A. Cymes, John C. Bridges, Leon Hicks, Martin R. Lee, Luke Daly, Phil A. Bland, Michael E. Zolensky, David R. Frank, James Martinez, Akira Tsuchiyama, Masahiro Yasutake, Junya Matsuno, Shota Okumura, Itaru Mitsukawa, Kentaro Uesugi, Masayuki Uesugi, Akihisa Takeuchi, Mingqi Sun, Satomi Enju, Aki Takigawa, Tatsuhiro Michikami, Tomoki Nakamura, Megumi Matsumoto, Yusuke Nakauchi, Masanao Abe, Satoru Nakazawa, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tomohiro Usui, Toru Yada, Hisayoshi Yurimoto, Kazuhide Nagashima, Noriyuki Kawasaki, Naoya Sakamotoa, Peter Hoppe, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Sei ichiro Watanabe, Yuichi Tsuda

    Meteoritics and Planetary Science   59 ( 8 )   1983 - 2001   2024.1   ISSN:1086-9379 eISSN:1945-5100

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    The Hayabusa2 mission from the Japan Aerospace Exploration Agency (JAXA) returned to the Earth samples of carbonaceous asteroid (162173) Ryugu. This mission offers a unique opportunity to investigate in the laboratory samples from a C-type asteroid, without physical or chemical alteration by the terrestrial atmosphere. Here, we report on an investigation of the mineralogy and the organo-chemistry of Hayabusa2 samples using a combination of micro- and nano-infrared spectroscopy. Particles investigated with conventional FTIR spectroscopy have spectra dominated by phyllosilicate-related absorption, as observed for samples of CI-chondrites, selected ungrouped carbonaceous chondrites, and selected hydrated micrometeorites. Ryugu samples show smaller sulfate-related absorption than CI-chondrites. Our samples that were only briefly exposed to the Earth atmosphere show absorptions related to molecular water, revealing fast terrestrial contamination of the spectral signature at 3 μm. Overall, our FTIR data are in agreement with other work done on Ryugu samples, revealing a low degree of mineralogical variability across Ryugu samples. AFM-IR mapping of the grains shows the presence of a micrometer-sized organic globule in one of our analyzed grains. The AFM-IR spectra obtained on this globule are similar to IR spectra obtained on IOM suggesting that it is constituted of refractory organic matter. This globule may host silicate in its interior, with a different mineralogy than bulk Ryugu phyllosilicate. The shape, presence of peculiar silicate, and the nature of organic constituting the globule point toward a pre-accretionary origin of this globule and that at least part of Ryugu organics were inherited from the protosolar nebulae or the interstellar media. Altogether, our results show the similarities between Ryugu samples and CI chondrites.

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  • Four-dimensional-STEM analysis of the phyllosilicate-rich matrix of Ryugu samples

    Bahae eddine Mouloud, Damien Jacob, Francisco de la Peña, Maya Marinova, Corentin Le Guillou, Jean Christophe Viennet, Sylvain Laforet, Hugues Leroux, Adrien Teurtrie, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hope A. Ishii, John P. Bradley, Kenta K. Ohtaki, Elena Dobrica, Falko Langenhorst, Dennis Harries, Pierre Beck, Thi H.V. Phan, Rolando Rebois, Neyda M. Abreu, Jennifer Gray, Thomas Zega, Pierre M. Zanetta, Michelle S. Thompson, Rhonda Stroud, Kate Burgess, Brittany A. Cymes, John C. Bridges, Leon Hicks, Martin R. Lee, Luke Daly, Phil A. Bland, Michael E. Zolensky, David R. Frank, James Martinez, Akira Tsuchiyama, Masahiro Yasutake, Junya Matsuno, Shota Okumura, Itaru Mitsukawa, Kentaro Uesugi, Masayuki Uesugi, Akihisa Takeuchi, Mingqi Sun, Satomi Enju, Aki Takigawa, Tatsuhiro Michikami, Tomoki Nakamura, Megumi Matsumoto, Yusuke Nakauchi, Masanao Abe, Satoru Nakazawa, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tomohiro Usui, Toru Yada, Hisayoshi Yurimoto, Kazuhide Nagashima, Noriyuki Kawasaki, Naoya Sakamotoa, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Sei ichiro Watanabe, Yuichi Tsuda

    Meteoritics and Planetary Science   59 ( 8 )   2002 - 2022   2024.1   ISSN:1086-9379 eISSN:1945-5100

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    Ryugu asteroid grains brought back to the Earth by the Hayabusa2 space mission are pristine samples containing hydrated minerals and organic compounds. Here, we investigate the mineralogy of their phyllosilicate-rich matrix with four-dimensional scanning transmission electron microscopy (4D-STEM). We have identified and mapped the mineral phases at the nanometer scale (serpentine, smectite, pyrrhotite), observed the presence of Ni-bearing pyrrhotite, and identified the serpentine polymorph as lizardite, in agreement with the reported aqueous alteration history of Ryugu. Furthermore, we have mapped the d-spacings of smectite and observed a broad distribution of values, ranging from 1 to 2 nm, with an average d-spacing of 1.24 nm, indicating significant heterogeneity within the sample. Such d-spacing variability could be the result of either the presence of organic matter trapped in the interlayers or the influence of various geochemical conditions at the submicrometer scale, suggestive of a range of organic compounds and/or changes in smectite crystal chemistry.

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  • Effect of ZrSnO<inf>4</inf> solid solution on the crystallization behavior of Li<inf>2</inf>O–Al<inf>2</inf>O<inf>3</inf>–SiO<inf>2</inf> glasses

    Takato Kajihara, Hiroyuki Hijiya, Satoshi Yoshida, Kakeru Ninomiya, Maiko Nishibori, Hikaru Saito, Shigeru Fujino, Satoshi Hata

    International Journal of Applied Glass Science   15 ( 1 )   31 - 43   2024.1   ISSN:2041-1286 eISSN:2041-1294

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    Herein, the crystallization behavior of a Li2O–Al2O3–SiO2 (LAS) glass system with the addition of ZrO2 and SnO2 as nucleating agents was investigated using X-ray diffraction, differential scanning calorimetry, four-dimensional scanning transmission electron microscopy, and X-ray absorption fine-structure measurements. At lower heat-treatment temperatures, the addition of ZrO2 and SnO2 afforded a ZrSnO4 solid solution (SS), whereas at higher heat-treatment temperatures, the ZrSnO4 SS decomposed, affording tetragonal ZrO2 and tetragonal SnO2. LAS-based crystalline phases, such as β-quartz and β-spodumene phases SS, were formed after the formation of the ZrSnO4 SS. ZrSnO4 SS particles a few nanometers in size were present in contact with the β-quartz SS particles a few dozen nanometers in size. This suggests that the ZrSnO4 SS served as a crystal nucleus for the β-quartz SS, promoting its growth.

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  • Electron microscopy observations of the diversity of Ryugu organic matter and its relationship to minerals at the micro‐ to nano‐scale

    Rhonda M. Stroud, Jens Barosch, Lydie Bonal, Katherine Burgess, George D. Cody, Bradley T. De Gregorio, Luke Daly, Emmanuel Dartois, Elena Dobrică, Jean Duprat, Cecile Engrand, Dennis Harries, Minako Hashiguchi, Hope Ishii, Yoko Kebukawa, A. David Kilcoyne, Falko Langenhorst, Martin R. Lee, Larry R. Nittler, Eric Quirico, Taiga Okumura, Laurent Remusat, Scott Sandford, Hikaru Yabuta, Masanao Abe, Neyda M. Abreu, Paul A. J. Bagot, Pierre Beck, Laure Bejach, Phil A. Bland, John C. Bridges, Brittany A. Cymes, Alexandre Dazzi, Francisco de la Peña, Ariane Deniset‐Besseau, Satomi Enju, Yuma Enokido, David R. Frank, Jennifer Gray, Mitsutaka Haruta, Satoshi Hata, Leon Hicks, Yohei Igami, Damien Jacob, Kanami Kamide, Mutsumi Komatsu, Sylvain Laforet, Hugues Leroux, Corentin Le Guillou, Zita Martins, Maya Marinova, James Martinez, Jérémie Mathurin, Megumi Matsumoto, Toru Matsumoto, Junya Matsuno, Samuel McFadzean, Tatsuhiro Michikami, Itaru Mitsukawa, Akira Miyake, Masaaki Miyahara, Akiko Miyazaki, Gilles Montagnac, Smail Mostefaoui, Tomoki Nakamura, Aiko Nakato, Hiroshi Naraoka, Yusuke Nakauchi, Satoru Nakazawa, Masahiro Nishimura, Takaaki Noguchi, Kenta Ohtaki, Takuji Ohigashi, Tatsuaki Okada, Shota Okumura, Ryuji Okazaki, Thi H. V. Phan, Rolando Rebois, Kanako Sakamoto, Takanao Saiki, Hikaru Saito, Yusuke Seto, Miho Shigenaka, William Smith, Hiroki Suga, Mingqi Sun, Shogo Tachibana, Yoshio Takahashi, Yasuo Takeichi, Akihisa Takeuchi, Aki Takigawa, Yusuke Tamenori, Satoshi Tanaka, Fuyuto Terui, Michelle S. Thompson, Naotaka Tomioka, Akira Tsuchiyama, Yuichi Tsuda, Kentaro Uesugi, Masayuki Uesugi, Tomohiro Usui, Maximilien Verdier‐Paoletti, Daisuke Wakabayashi, Sei‐ichiro Watanabe, Toru Yada, Shohei Yamashita, Masahiro Yasutake, Kasumi Yogata, Makoto Yoshikawa, Hisayoshi Yurimoto, Pierre‐M. Zanetta, Thomas Zega, Michael E. Zolensky

    Meteoritics & Planetary Science   59 ( 8 )   2023 - 2043   2024.1   ISSN:1086-9379 eISSN:1945-5100

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    Abstract

    Transmission electron microscopy analyses of Hayabusa2 samples show that Ryugu organic matter exhibits a range of morphologies, elemental compositions, and carbon functional chemistries consistent with those of carbonaceous chondrites that have experienced low‐temperature aqueous alteration. Both nanoglobules and diffuse organic matter are abundant. Non‐globular organic particles are also present, and including some that contain nanodiamond clusters. Diffuse organic matter is finely distributed in and around phyllosilicates, forms coatings on other minerals, and is also preserved in vesicles in secondary minerals such as carbonate and pyrrhotite. The average elemental compositions determined by energy‐dispersive spectroscopy of extracted, demineralized insoluble organic matter samples A0107 and C0106 are C<sub>100</sub>N<sub>3</sub>O<sub>9</sub>S<sub>1</sub> and C<sub>100</sub>N<sub>3</sub>O<sub>7</sub>S<sub>1</sub>, respectively, with the difference in O/C slightly outside the difference in the standard error of the mean. The functional chemistry of the nanoglobules varies from mostly aromatic C=C to mixtures of aromatic C=C, ketone C=O, aliphatic (CH<sub>n</sub>), and carboxyl (COOH) groups. Diffuse organic matter associated with phyllosilicates has variable aromatic C, ketone and carboxyl groups, and some localized aliphatics, but is dominated by molecular carbonate (CO<sub>3</sub>) absorption, comparable to prior observations of clay‐bound organic matter in CI meteorites.

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  • Three-dimensional in-situ observation of metal nanoparticle sintering by using transmission electron microscopy

    Ihara Shiro, Saito Hikaru, Hata Satoshi, Murayama Mitsuhiro

    Journal of the Japanese Association for Crystal Growth   51 ( 1 )   n/a   2024   ISSN:03856275 eISSN:21878366

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    <p>  Metal nanoparticles undertake sintering at a lower temperature compared to their bulk counterparts, attracting great attention in industrial applications such as printed electronics. Since nanoparticles are easy to aggregate, the three-dimensional (3D) visualization of their sintering process plays a vital role in quantifying the morphological changes during heating. However, the nanoparticles are sensitive to surface contamination, resulting in poor affinity to the 3D visualization with conventional electron beam intensity because the visualization technique requires a long beam exposure time, potentially making beam induced contamination significant. In this paper, we demonstrate our developed 3D observation scheme, including advanced image processing techniques. A sample transfer system, which enables to prevent nanoparticles from being exposed to air, and an ultra-low-electron dose observation protocol prevents surface contamination during the observation. The low-signal-to-noise ratio of acquired images is compensated by the advanced image processing techniques. The obtained 3D images of nanoparticles enable to measure the neck growth and variation of particle distance in 3D during the sintering in a quantitative way.</p>

    DOI: 10.19009/jjacg.51-1-03

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  • Mineralogy and petrology of fine-grained samples recovered from the asteroid (162173) Ryugu

    Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hope A. Ishii, John P. Bradley, Kenta K. Ohtaki, Elena Dobrică, Hugues Leroux, Corentin Le Guillou, Damien Jacob, Francisco de la Peña, Sylvain Laforet, Bahae Eddine Mouloud, Maya Marinova, Falko Langenhorst, Dennis Harries, Pierre Beck, Thi H.V. Phan, Rolando Rebois, Neyda M. Abreu, Jennifer Gray, Thomas Zega, Pierre M. Zanetta, Michelle S. Thompson, Rhonda Stroud, Kate Burgess, Brittany A. Cymes, John C. Bridges, Leon Hicks, Martin R. Lee, Luke Daly, Phil A. Bland, William A. Smith, Sam McFadzean, Pierre Etienne Martin, Paul A.J. Bagot, Dennis Fougerouse, David W. Saxey, Steven Reddy, William D.A. Rickard, Michael E. Zolensky, David R. Frank, James Martinez, Akira Tsuchiyama, Masahiro Yasutake, Junya Matsuno, Shota Okumura, Itaru Mitsukawa, Kentaro Uesugi, Masayuki Uesugi, Akihisa Takeuchi, Mingqi Sun, Satomi Enju, Aki Takigawa, Tatsuhiro Michikami, Tomoki Nakamura, Megumi Matsumoto, Yusuke Nakauchi, Masanao Abe, Satoru Nakazawa, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tomohiro Usui, Toru Yada, Hisayoshi Yurimoto, Kazuhide Nagashima, Noriyuki Kawasaki, Naoya Sakamotoa, Peter Hoppe, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Sei ichiro Watanabe, Yuichi Tsuda

    Meteoritics and Planetary Science   59 ( 8 )   1877 - 1906   2023.11   ISSN:1086-9379 eISSN:1945-5100

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    Samples returned from the carbonaceous asteroid (162173) Ryugu by the Hayabusa2 mission revealed that Ryugu is composed of materials consistent with CI chondrites and some types of space weathering. We report detailed mineralogy of the fine-grained Ryugu samples allocated to our “Sand” team and report additional space weathering features found on the grains. The dominant mineralogy is composed of a fine-grained mixture of Mg-rich saponite and serpentine, magnetite, pyrrhotite, pentlandite, dolomite, and Fe-bearing magnesite. These grains have mineralogy comparable to that of CI chondrites, showing severe aqueous alteration but lacking ferrihydrite and sulfate. These results are similar to previous works on large Ryugu grains. In addition to the major minerals, we also find many minerals that are rare or have not been reported among CI chondrites. Accessory minerals identified are hydroxyapatite, Mg-Na phosphate, olivine, low-Ca pyroxene, Mg-Al spinel, chromite, manganochromite, eskolaite, ilmenite, cubanite, polydymite, transjordanite, schreibersite, calcite, moissanite, and poorly crystalline phyllosilicate. We also show scanning transmission electron microscope and scanning electron microscope compositional maps and images of some space-weathered grains and severely heated and melted grains. Although our mineralogical results are consistent with that of millimeter-sized grains, the fine-grained fraction is best suited to investigate impact-induced space weathering.

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  • Hydrogen-induced phase with martensitic-like characteristics in Ti-Ni shape memory alloys

    Hiroshi Akamine, Alimzhan Kalbekov, Takumi Higashizono, Mitsuhiro Matsuda, Satoshi Hata, Minoru Nishida

    Journal of Alloys and Compounds   965   171470 - 171470   2023.11   ISSN:0925-8388 eISSN:1873-4669

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    It has been reported that functional and mechanical properties of Ti-Ni shape memory alloys could be degraded by hydrogen absorption. Many studies have indicated the formation of a hardened layer on the surface in hydrogen-absorbed Ti-Ni alloys. However, the underlying microstructural features and their impact on the functional and mechanical properties remain unclear. In the present study, ex situ and in situ electron microscopy characterizations of the high-hardness layer in a hydrogen-charged Ti-Ni alloy were performed for the first time. Electron diffraction and atomic resolution imaging revealed that the hardened layers have an orthorhombic structure with a four-layer stacking sequence and a martensitic-like crystallographic nature such as lattice correspondence including 12 variants of the orthorhombic phase against each orientation of the parent cubic (B2) phase. In situ and ex situ observations in an electron microscope confirmed that the orthorhombic phase undergoes athermal transformation upon cooling and stress- and/or strain-induced transformation upon deformation, which further characterizes the martensitic-like nature of this phase. The effect of hydrogen on the original phase transformation from the cubic (B2) to the monoclinic (B19′) structure is also discussed.

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  • Organic mediated solvothermal synthesis, enhanced luminescence dynamics, photometric and Judd-Ofelt analyses of Zn2+ modified Gd<inf>2</inf>O<inf>3</inf>: Eu3+, Li+ nanophosphors for deep UV LEDs and security inks

    R. G. Abhilash Kumar, Satoshi Hata, K. G. Gopchandran

    Journal of Luminescence   263   2023.11   ISSN:0022-2313 eISSN:1872-7883

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    Highly luminescent red emitting Zn2+ modified Gd2O3:Eu3+, Li + nanophosphors with superior colour purity were prepared by the organic mediated solvothermal combustion of metal-citrates in diethylene glycol. Structure, morphology, spectroscopic and luminescence dynamics of the nanophosphors were found to be sensitive to Zn2+ concentration. Simultaneous incorporation by Zn2+ and Li+ ions in Gd2O3:Eu3+ resulted in better emission features and improved photophysical radiative properties. Enhanced photoemission has resulted from the cooperative and combined roles caused by Li+ and Zn2+ ions, improvement of crystallinity, modifications of the crystal field and reduced symmetry around Eu3+ ions in Gd2O3. Photoemission intensity of the optimal zinc compensated phosphor with composition Gd1.71Eu0.1Li0.15Zn0.04O3 was found to be 1.82 times that of Gd1.75Eu0.1Li0.15O3 and it exhibited a lifetime of 1.467 ms with the highest colour purity of 97.06 %. Luminescence decay profiles of all the synthesized phosphors were found to follow single exponential behaviour. Judd-Ofelt analysis revealed that the emission intensity parameters were found to be optimum for Gd1.71Eu0.1Li0.15Zn0.04O3 phosphor, indicating the highest asymmetry of local environment around Eu3+ ions in this material. Better radiative and Judd-Ofelt intensity parameters obtained indicate that this highly luminescent red emitting phosphor can act as a promising material for high resolution phosphor coated displays, deep UV excited phosphor converted LEDs and for developing defence security inks.

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  • Microstructure and Its Heat Treatment Process of Thin Films Fabricated by Alternate Sputtering of (Bi,Pb)2Sr2CaCu2O x and Pb–Ca–Cu–O Targets on SrTiO3 Substrates

    Satoshi Hata, Daiki Fukuda, Hikaru Saito, Yusuke Shimada, Zimeng Guo, Akiyoshi Matsumoto, Hideharu Nakashima, Hitoshi Kitaguchi

    IEEE Transactions on Applied Superconductivity   33 ( 5 )   1 - 5   2023.8   ISSN:1051-8223 eISSN:1558-2515

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    For obtaining microscopic knowledge toward a fabrication process of (Bi,Pb)2Sr2Ca2Cu3Ox (Bi,Pb-2223) single-phase material, we fabricated a multilayered film on a SrTiO3(001) substrate by a sputtering method using (Bi,Pb)2Sr2CaCu2Oy (Bi,Pb-2212) and Pb-Ca-Cu-O targets alternately at 650 °C. The as-grown film was an epitaxially grown multilayered film consisting of Bi,Pb-2212 and Pb-Ca-Cu-O layers. Coarse grains of impurity phases were also formed within the multilayered film, and these impurity phases were difficult to eliminate even after heat treatments. After 10 h heat treatment at 840 °C with Bi,Pb-2223 pellets, the phase transition from Bi,Pb-2212 to Bi,Pb-2223 occurred in the multilayered film. The phase transition to Bi,Pb-2223 proceeded preferentially at the interface with the impurity phases and the Pb-Ca-Cu-O layers. These observation results suggest that the impurity phases promote three-dimensional atomic diffusion in the multilayered film to accelerate the phase transition to Bi,Pb-2223, as well as consume constituent elements, Ca, Cu and O. Even after the 100 h heat treatment at 840 °C with Bi,Pb-2223 pellets, the phase transition from Bi,Pb-2212 to Bi,Pb-2223 did not proceed completely, and the fraction of the Bi,Pb-2223 phase in the whole superconducting phases was ∼50%. It is suggested that controlling the formation and microstructure of the impurity phases is a key to further increasing the fraction of the Bi,Pb-2223 phase.

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  • Effect of small additions of Li2O on phase separation and crystallization of barium‐silicate glasses

    Takato Kajihara, Kosho Akatsuka, Hiroyuki Hijiya, Satoshi Yoshida, Aran Mitsuta, Hongye Gao, Shigeru Fujino, Satoshi Hata

    Journal of the American Ceramic Society   106 ( 7 )   4181 - 4191   2023.7   ISSN:0002-7820 eISSN:1551-2916

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    It is known that the addition of Li2O to 33.3BaO-66.7SiO2 glass, whose composition is the same as BaSi2O5, promotes crystallization of BaSi2O5. In this study, in order to clarify the effect of a smaller amount of Li2O, xLi2O-(30-x)BaO-70SiO2[mol%] (x = 0, 0.2, 0.5) glasses were prepared. The main crystalline phases in the heat treatments near the maximum crystallization peak temperature, were high-BaSi2O5 and low-BaSi2O5 which transformed from high-BaSi2O5. It is found that the introduction of only 0.2 mol% and 0.5 mol% Li2O significantly changes the crystallization behavior. In the composition without Li2O, only high-BaSi2O5 was formed after heat treatment even for 24 h. For compositions containing Li2O, low-BaSi2O5 was formed within 1 h of heat treatment. In these compositions, it is found that the addition of Li2O enhances phase separation in the early stage of heat treatment, resulting in the formation of Si-rich droplet phases and Ba-rich phases. The composition of the Ba rich glass phase would be close to the stoichiometric composition of BaSi2O5, suggesting a significant change in crystallization behavior.

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  • In situ electron tomography for the thermally activated solid reaction of anaerobic nanoparticles Reviewed

    Shiro Ihara, Mizumo Yoshinaga, Hiroya Miyazaki, Kota Wada, Satoshi Hata, Hikaru Saito, Mitsuhiro Murayama

    Nanoscale   15 ( 23 )   10133 - 10140   2023.6   ISSN:2040-3364 eISSN:2040-3372

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    The nanoscale characterization of thermally activated solid reactions plays a pivotal role in products manufactured by nanotechnology. Recently, in situ observation in transmission electron microscopy combined with electron tomography, namely four-dimensional observation for heat treatment of nanomaterials, has attracted great interest. However, because most nanomaterials are highly reactive, i.e., oxidation during transfer and electron beam irradiation would likely cause fatal artefacts; it is challenging to perform the artifact-free four-dimensional observation. Herein, we demonstrate our development of a novel in situ three-dimensional electron microscopy technique for thermally activated solid-state reaction processes in nanoparticles (NPs). The sintering behaviour of Cu NPs was successfully visualized and analyzed in four-dimensional space-time. An advanced image processing protocol and a newly designed state-of-the-art MEMS-based heating holder enable the implementation of considerably low electron dose imaging and prevent air exposure, which is of central importance in this type of observation. The total amount of electron dose for a single set of tilt-series images was reduced to 250 e− nm−2, which is the lowest level for inorganic materials electron tomography experiments. This study evaluated the sintering behaviour of Cu NPs in terms of variations in neck growth and particle distance. A negative correlation between the two parameters is shown, except for the particle pair bound by neighbouring NPs. The nanoscale characteristic sintering behavior of neck growth was also captured in this study.

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  • Recent progress on epitaxial growth of Fe-based superconducting thin films

    Kazumasa Iida, Jens Hänisch, Satoshi Hata, Akiyasu Yamamoto

    Superconductor Science and Technology   36 ( 6 )   063001 - 063001   2023.4   ISSN:0953-2048 eISSN:1361-6668

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    Since the discovery of Fe-based superconductors, a lot of effort has been devoted to growing single crystals and epitaxial thin films of them for fundamental studies and applied research of superconductivity. As a result, epitaxial thin films of the most of Fe-based superconductors have been realized. However, some of the materials, namely pristine and transition-metal-doped (Li,Fe)OHFeSe, hydrogen-doped LnFeAsO (Ln = Nd and Sm), Co-doped SmFeAsO, and K-doped BaFe<sub>2</sub>As<sub>2</sub> have been available only in the form of single crystals due to, e.g. the difficulty in doping hydrogen, obtaining high-quality sintered bulks for the target used for pulsed laser deposition, and controlling volatile elements. By solving those issues, the aforementioned compounds have been successfully fabricated as epitaxial thin films in recent years. Unlike single crystals, transport critical current measurements are relatively easy on thin films, which can help evaluate the application potential. In this article, we give an overview over the growth methods for epitaxial thin films of those compounds, followed by their physical properties, especially focusing on electrical transport.

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  • Nonequilibrium spherulitic magnetite in the Ryugu samples

    Elena Dobrică, Hope A. Ishii, John P. Bradley, Kenta Ohtaki, Adrian J. Brearley, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hugues Leroux, Corentin Le Guillou, Damien Jacob, Francisco de la Peña, Sylvain Laforet, Maya Marinova, Falko Langenhorst, Dennis Harries, Pierre Beck, Thi H.V. Phan, Rolando Rebois, Neyda M. Abreu, Jennifer Gray, Thomas Zega, Pierre M. Zanetta, Michelle S. Thompson, Rhonda Stroud, Kate Burgess, Brittany A. Cymes, John C. Bridges, Leon Hicks, Martin R. Lee, Luke Daly, Phil A. Bland, Michael E. Zolensky, David R. Frank, James Martinez, Akira Tsuchiyama, Masahiro Yasutake, Junya Matsuno, Shota Okumura, Itaru Mitsukawa, Kentaro Uesugi, Masayuki Uesugi, Akihisa Takeuchi, Mingqi Sun, Satomi Enju, Aki Takigawa, Tatsuhiro Michikami, Tomoki Nakamura, Megumi Matsumoto, Yusuke Nakauchi, Hisayoshi Yurimoto, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei ichiro Watanabe, Yuichi Tsuda

    Geochimica et Cosmochimica Acta   346   65 - 75   2023.4   ISSN:0016-7037 eISSN:1872-9533

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    We have investigated several particles collected during each of two touchdowns of the Hayabusa2 spacecraft at the surface of the C-type asteroid 162173 Ryugu using various electron microscope techniques. Our detailed transmission electron microscopy study shows the presence of magnetite with various morphologies coexisting in close proximity. This is characteristic of CI chondrite-like materials and consistent with the mineral assemblages and compositions in the Ryugu parent body. We describe the microstructural characteristics of magnetite with different morphologies, which could have resulted from the chemical conditions (growth vs. diffusion rate) during their formation. Furthermore, we describe the presence of magnetites with a spherulitic structure composed of individual radiating fibers that are characterized by pervasive, homogeneously distributed euhedral to subhedral pores that have not been described in previous chondrite studies. This particular spherulitic structure is consistent with crystallization under nonequilibrium conditions. Additionally, the presence of a high density of defects within the magnetite fibers, the high surface/volume ratio of this morphology, and the presence of amorphous materials in several pores and at the edges of the acicular fibers further support their formation under nonequilibrium conditions. We suggest that the growth processes that lead to this structure result from the solution reaching a supersaturated state, resulting in an adjustment to a lower free energy condition via nucleation and rapid growth.

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  • Three-dimensional electron tomography and recent expansion of its applications in materials science

    Norio Baba, Satoshi Hata, Hikaru Saito, Kenji Kaneko

    Microscopy   72 ( 2 )   111 - 134   2023.4   ISSN:2050-5698 eISSN:2050-5701

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    Electron tomography (ET) is a powerful tool for elucidating the properties and functionalities of materials. The innovative development of aberration-corrected electron microscopy in the early 21st century and the remarkable progress in the development of detectors, equipment and devices related to ET have resulted in substantial improvements in resolution. However, not only advances in hardware but also remarkable developments in reconstruction algorithms and related three-dimensional (3D) analysis methods have contributed to the resolution improvements. ET has its own problems, including the missing-wedge problem due to the limited tilt-angle range and the need to acquire numerous specimen-tilt images, the latter of which is time-consuming and can potentially damage the specimen. This review paper aims to (i) describe the established basic theories and definitions regarding 3D resolution of ET and practical 3D resolution measurement methods, (ii) discuss various reconstruction algorithms that effectively overcome the aforementioned problems and (iii) describe recent progress in the core of ET applications in materials science with respect to atomic ET, analytical ET and in-situ ET. The aforementioned ET problems have been addressed with each method developed in each field of application. Notably, in terms of aim (ii), recently developed reconstruction algorithms can reduce the number of projection images (specimen-tilt images) needed to attain a certain resolution without violating the Nyquist criterion. This approach is interpreted as a novel non-linear sampling theorem.

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  • A dehydrated space-weathered skin cloaking the hydrated interior of Ryugu

    Noguchi Takaaki, Matsumoto Toru, Miyake Akira, Igami Yohei, Haruta Mitsutaka, Saito Hikaru, Hata Satoshi, Seto Yusuke, Miyahara Masaaki, Tomioka Naotaka, Ishii Hope A., Bradley John P., Ohtaki Kenta K., Dobrică Elena, Leroux Hugues, Le Guillou Corentin, Jacob Damien, de la Peña Francisco, Laforet Sylvain, Marinova Maya, Langenhorst Falko, Harries Dennis, Beck Pierre, Phan Thi H. V., Rebois Rolando, Abreu Neyda M., Gray Jennifer, Zega Thomas, Zanetta Pierre-M., Thompson Michelle S., Stroud Rhonda, Burgess Kate, Cymes Brittany A., Bridges John C., Hicks Leon, Lee Martin R., Daly Luke, Bland Phil A., Zolensky Michael E., Frank David R., Martinez James, Tsuchiyama Akira, Yasutake Masahiro, Matsuno Junya, Okumura Shota, Mitsukawa Itaru, Uesugi Kentaro, Uesugi Masayuki, Takeuchi Akihisa, Sun Mingqi, Enju Satomi, Takigawa Aki, Michikami Tatsuhiro, Nakamura Tomoki, Matsumoto Megumi, Nakauchi Yusuke, Abe Masanao, Arakawa Masahiko, Fujii Atsushi, Hayakawa Masahiko, Hirata Naru, Hirata Naoyuki, Honda Rie, Honda Chikatoshi, Hosoda Satoshi, Iijima Yu-ichi, Ikeda Hitoshi, Ishiguro Masateru, Ishihara Yoshiaki, Iwata Takahiro, Kawahara Kousuke, Kikuchi Shota, Kitazato Kohei, Matsumoto Koji, Matsuoka Moe, Mimasu Yuya, Miura Akira, Morota Tomokatsu, Nakazawa Satoru, Namiki Noriyuki, Noda Hirotomo, Noguchi Rina, Ogawa Naoko, Ogawa Kazunori, Okada Tatsuaki, Okamoto Chisato, Ono Go, Ozaki Masanobu, Saiki Takanao, Sakatani Naoya, Sawada Hirotaka, Senshu Hiroki, Shimaki Yuri, Shirai Kei, Sugita Seiji, Takei Yuto, Takeuchi Hiroshi, Tanaka Satoshi, Tatsumi Eri, Terui Fuyuto, Tsukizaki Ryudo, Wada Koji, Yamada Manabu, Yamada Tetsuya, Yamamoto Yukio, Yano Hajime, Yokota Yasuhiro, Yoshihara Keisuke, Yoshikawa Makoto, Yoshikawa Kent, Fukai Ryohta, Furuya Shizuho, Hatakeda Kentaro, Hayashi Tasuku, Hitomi Yuya, Kumagai Kazuya, Miyazaki Akiko, Nakato Aiko, Nishimura Masahiro, Soejima Hiromichi, Suzuki Ayako I., Usui Tomohiro, Yada Toru, Yamamoto Daiki, Yogata Kasumi, Yoshitake Miwa, Connolly Harold C., Lauretta Dante S., Yurimoto Hisayoshi, Nagashima Kazuhide, Kawasaki Noriyuki, Sakamoto Naoya, Okazaki Ryuji, Yabuta Hikaru, Naraoka Hiroshi, Sakamoto Kanako, Tachibana Shogo, Watanabe Sei-ichiro, Tsuda Yuichi

    Nature Astronomy   7 ( 2 )   170 - 181   2023.2   ISSN:2397-3366 eISSN:23973366

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    Without a protective atmosphere, space-exposed surfaces of airless Solar System bodies gradually experience an alteration in composition, structure and optical properties through a collective process called space weathering. The return of samples from near-Earth asteroid (162173) Ryugu by Hayabusa2 provides the first opportunity for laboratory study of space-weathering signatures on the most abundant type of inner solar system body: a C-type asteroid, composed of materials largely unchanged since the formation of the Solar System. Weathered Ryugu grains show areas of surface amorphization and partial melting of phyllosilicates, in which reduction from Fe³⁺ to Fe²⁺ and dehydration developed. Space weathering probably contributed to dehydration by dehydroxylation of Ryugu surface phyllosilicates that had already lost interlayer water molecules and to weakening of the 2.7 µm hydroxyl (–OH) band in reflectance spectra. For C-type asteroids in general, this indicates that a weak 2.7 µm band can signify space-weathering-induced surface dehydration, rather than bulk volatile loss.

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  • Succinyl-CoA-based energy metabolism dysfunction in chronic heart failure

    Takada, S; Maekawa, S; Furihata, T; Kakutani, N; Setoyama, D; Ueda, K; Nambu, H; Hagiwara, H; Handa, H; Fumoto, Y; Hata, S; Masunaga, T; Fukushima, A; Yokota, T; Kang, D; Kinugawa, S; Sabe, H

    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA   119 ( 41 )   e2203628119   2022.10   ISSN:0027-8424 eISSN:1091-6490

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  • K-doped Ba122 epitaxial thin film on MgO substrate by buffer engineering

    Dongyi Qin, Kazumasa Iida, Zimeng Guo, Chao Wang, Hikaru Saito, Satoshi Hata, Michio Naito, Akiyasu Yamamoto

    Superconductor Science and Technology   35 ( 9 )   09LT01 - 09LT01   2022.9   ISSN:0953-2048 eISSN:1361-6668

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    Molecular beam epitaxy of K-doped Ba122 (Ba<sub>1−x</sub>K<sub>x</sub>Fe<sub>2</sub>As<sub>2</sub>) superconductor was realized on an MgO substrate. Microstructural observation revealed that the undoped Ba122 served as a perfect buffer layer for epitaxial growth of the K-doped Ba122. The film exhibited a high critical temperature of 39.8 K and a high critical current density of 3.9 MA cm<sup>−2</sup> at 4 K. The successful growth of epitaxial thin film will enable artificial single grain boundary on oxide bicrystal substrates and reveal the grain boundary transport nature of K-doped Ba122.

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  • Volume imaging by tracking sparse topological features in electron micrograph tilt series

    T. C. Petersen, C. Zhao, E. D. Bøjesen, N. L.N. Broge, S. Hata, Y. Liu, J. Etheridge

    Ultramicroscopy   236   113475   2022.6   ISSN:0304-3991 eISSN:1879-2723

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    The sensitive coherent interference of electron waves arising from a specimen is useful for revealing subtle structural information in electron micrographs, which can be important for minimising dose and for rapid imaging. In general, dynamical diffraction is expected due to the useful strong interactions of electrons with matter, which can create phase contrast that violates the requisite Radon projection assumption for tomography. It is for these reasons that incoherent imaging modalities such as high angle annular dark field have been favoured to date in electron tomography of crystalline specimens, to access a monotonic relationship between specimen thickness and micrograph intensity. Here we use a geometric approach to track topological features that are robust to perturbation of the imaging conditions, to enable 3D reconstructions from electron microscope tilt series under imaging conditions that violate the Radon projection assumption, with an emphasis on phase contrast. Invoking a sparsity assumption, we demonstrate that topological features can be reliably tracked in 3D using a differential geometric form of stereoscopy, to circumvent departures from the projection approximation and reduce noise by effecting segmentation of interest points from the outset. We demonstrate this approach on a variety of different specimen and data types, from polyhedral nanoparticles, to steel dislocation networks, cryo-EM cellular structures and 3D diffuse diffraction of a relaxor ferroelectric.

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  • Three-dimensional Quantitative Evaluation of the Lamellar Curvature in Pearlitic Steel Based on an Orientation Analysis of Cementite

    Kosaka Makoto, Ushioda Kohsaku, Teshima Toshihiko, Nishida Minoru, Hata Satoshi

    ISIJ International   62 ( 2 )   299 - 306   2022.2   ISSN:09151559 eISSN:13475460

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    <p>To quantitatively evaluate the three-dimensional lamellar curvature in pearlitic steel, the crystallographic orientation rotation of ferrite and cementite was analyzed using scanning electron microscopy and electron backscattering diffraction. In the hypereutectoid steel containing 0.92% C, 0.30% Mn, 0.20% Si, and 0.19% Cr, the ferrite–cementite interfaces in some colonies were confirmed to match well with those having frequently observed habit planes with the Pitsch–Petch orientation relationship. It was also confirmed that the ferrite and cementite near the ferrite–cementite interface rotated toward the same orientation to maintain the Pitsch–Petch orientation relationship and the habit plane. Based on the confirmation that the ferrite–cementite interface is well approximated by (010) plane of the adjacent cementite, the lamellae were revealed to have three-dimensional anisotropic curvature.</p>

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  • Recent Studies on TEM/STEM Tomography

    Hata Satoshi, Zhao Yifang, Ihara Shiro, Saito Hikaru, Mitsuhara Masatoshi, Murayama Mitsuhiro

    Materia Japan   61 ( 2 )   84 - 88   2022.2   ISSN:13402625 eISSN:18845843

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    DOI: 10.2320/materia.61.84

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  • Preparation and characterization of non-woven nanofibrous membranes of chitosan and poly(ethylene oxide) in a high ethanol concentration Reviewed International journal

    Harini Sosiati, Ardhia Revarti, Ardi Surya, Satoshi Hata

    Journal of Southwest Jiaotong University   2022.2

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  • Preparation and characterization of non-woven nanofibrous membranes of chitosan and poly(ethylene oxide) in a high ethanol concentration Reviewed International journal

    Harini Sosiati, Ardhia Revarti, Ardi Surya, Satoshi Hata

    Journal of Southwest Jiaotong University   2022.2

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  • 関節内注射後の壊死性筋膜炎症例 医原性か自然発生か?(A case of necrotizing fasciitis following intra-articular injections: Iatrogenic or spontaneous?)

    Matsuki Jumpei, Ishigami Akiko, Tanaka Motonari, Hata Satoshi, Ishida Yuko, Nosaka Mizuho, Kuninaka Yumi, Yamamoto Hiroki, Shimada Emi, Hashizume Yumiko, Takayasu Tatsunori, Kimura Akihiko, Furukawa Fukumi, Kondo Toshikazu

    Legal Medicine   54   1 - 5   2022.2   ISSN:1344-6223

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    ヒアルロン酸の関節内注射後に、壊死性筋膜炎を発症した剖検例について報告した。症例は73歳女性で、肩関節周囲炎と変形性膝関節症による関節痛のため、クリニックで左肩と左膝にヒアルロン酸の関節内注射を受けていた。夫の証言では、帰宅後、PM10時頃はリビングでソファの近くで寝ていたが、翌朝AM10時頃、ソファの下で仰臥位で死んでいた。また、法医解剖では左肩と左膝に水疱と紅斑を伴った注射痕が認められ、左上腕部と左大腿部には筋組織の液化壊死が観察された。さらに、病理組織学検査では、左上腕部と左大腿部に多数の細菌クラスターを伴った重度の横紋筋融解症も認められ、細菌学的検査ではA群レンサ球菌が検出され、血液生化学検査では血中尿素窒素、クレアチニンおよびC反応性タンパク質の濃度上昇も認められた。これらの所見から、死因は劇症型溶血性レンサ球菌感染症(STSS)と診断され、感染経路として、注射が適切に行われておらず、細菌の侵入経路となった可能性が示唆された。

  • Superconducting Properties and Microstructure of In-situ Cu Addition Low Activation MgB<sub>2</sub> Multifilamentary Wires Using Different Boron-11 Isotope Powders

    Yoshimitsu HISHINUMA, Yusuke SHIMADA, Satoshi HATA, Teruya TANAKA, Akihiro KIKUCHI

    TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)   57 ( 1 )   31 - 38   2022   ISSN:03892441 eISSN:18800408

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    <p>MgB<sub>2</sub> compound is one of the low activation superconducting materials because the half-life time of the MgB<sub>2</sub> phase is much shorter than that of the Nb-based superconductors, such as Nb-Ti and Nb<sub>3</sub>Sn. The natural boron powder as the boron source of the in-situ MgB<sub>2</sub> wire and bulk consists of two kinds of stable isotope materials, which are B-10 (<sup>10</sup>B:19.78 %) and B-11 (<sup>11</sup>B: 80.22 %) isotopes. The <sup>11</sup>B isotope is a promising raw material for the further improvement of the neutron irradiation effect on the low activation MgB<sub>2</sub> wire. This study focused on the quality effect of the <sup>11</sup>B isotope raw powder on the superconducting properties of the <sup>11</sup>B isotope-originated MgB<sub>2</sub> (Mg<sup>11</sup>B2) wire. We found that the nano-order particle size and the higher purification of the <sup>11</sup>B isotope raw powder would be efficient in the improvement of the superconducting properties of the low activation Mg<sup>11</sup>B<sub>2</sub> wire.</p>

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  • Approaching the ultimate superconducting properties of (Ba,K)Fe2As2 by naturally formed low-angle grain boundary networks

    Kazumasa Iida, Dongyi Qin, Chiara Tarantini, Takafumi Hatano, Chao Wang, Zimeng Guo, Hongye Gao, Hikaru Saito, Satoshi Hata, Michio Naito, Akiyasu Yamamoto

    NPG Asia Materials   13 ( 1 )   2021.12

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  • High J <inf>c</inf> and low anisotropy of hydrogen doped NdFeAsO superconducting thin film International journal

    Scientific Reports   11 ( 1 )   5636 - 5636   2021.12

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    DOI: 10.1038/s41598-021-85216-3

  • Five-second STEM dislocation tomography for 300 nm thick specimen assisted by deep-learning-based noise filtering

    Yifang Zhao, Suguru Koike, Rikuto Nakama, Shiro Ihara, Masatoshi Mitsuhara, Mitsuhiro Murayama, Satoshi Hata, Hikaru Saito

    SCIENTIFIC REPORTS   11 ( 1 )   2021.10

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  • Critical Length for Lattice Expansion of SnO2 Nanorods and Nanosheets: Implications for Lithium-Ion Batteries

    Ryunosuke Nakamura, Hidetaka Kasai, Tomoki Fujita, Hiroshi Akamine, Satoshi Hata, Eiji Nishibori

    ACS Applied Nano Materials   4 ( 9 )   9938 - 9944   2021.9

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  • The effectiveness of biological pretreatment of oil palm empty fruit bunch on its conversion into Bio-Coke

    Bioresource Technology Reports   15   2021.9

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  • Nanoscale Texture and Microstructure in a NdFeAs(O,F)/IBAD-MgO Superconducting Thin Film with Superior Critical Current Properties

    ACS Applied Electronic Materials   3 ( 7 )   3158 - 3166   2021.7

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    DOI: 10.1021/acsaelm.1c00364

  • Thermal Conductivity of Nano-Crystallized Indium-Gallium-Zinc Oxide Thin Films Determined by Differential Three-Omega Method

    Rauf Khan, Michitaka Ohtaki, Satoshi Hata, Koji Miyazaki, Reiji Hattori

    Nanomaterials   11 ( 6 )   1547 - 1547   2021.6

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    DOI: 10.3390/nano11061547

  • Microstructural and spectroscopic analysis in non-uniform Y<inf>2</inf>O<inf>3</inf> ceramics fabricated by spark plasma sintering

    Ji Hwoan Lee, Byung Nam Kim, Satoshi Hata, Byung Koog Jang

    Journal of the Ceramic Society of Japan   129 ( 1 )   66 - 72   2021.1

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    DOI: 10.2109/jcersj2.20173

  • Realization of epitaxial thin films of the superconductor K-doped BaFe2As2

    Dongyi Qin, Kazumasa Iida, Takafumi Hatano, Hikaru Saito, Yiming Ma, Chao Wang, Satoshi Hata, Michio Naito, Akiyasu Yamamoto

    Physical Review Materials   5 ( 1 )   2021.1

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    DOI: 10.1103/physrevmaterials.5.014801

  • The properties of chitosan nanoemulsion/ poly (VINYL ALCOHOL) Nanocomposite membranes for wound care treatment

    H. Sosiati, W. Firmansyah, Aris W. Nugroho, Sudarisman, I. Ranti, S. Hata

    Journal of Engineering Science and Technology   15 ( 6 )   4091 - 4106   2020.12

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  • Electron tomography: An imaging method for materials deformation dynamics

    S. Hata, T. Honda, H. Saito, M. Mitsuhara, T. C. Petersen, M. Murayama

    Current Opinion in Solid State and Materials Science   24 ( 4 )   2020.8

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    DOI: 10.1016/j.cossms.2020.100850

  • Electron tomography imaging methods with diffraction contrast for materials research Invited Reviewed International journal

    Satoshi Hata, Hiromitsu Furukawa, Takashi Gondo, Daisuke Hirakami, Noritaka Horii, Ken-ichi Ikeda, Katsumi Kawamoto, Kosuke Kimura, Syo Matsumura, Masatoshi Mitsuhara, Hiroya Miyazaki, Shinsuke Miyazaki, Mitsu Mitsuhiro Murayama, Hideharu Nakashima, Hikaru Saito, Masashi Sakamoto, Shigeto Yamasaki

    Microscopy   69 ( 3 )   141 - 155   2020.3

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    Electron tomography imaging methods with diffraction contrast for materials research
    Transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM) enable the visualization of three-dimensional (3D) microstructures ranging from atomic to micrometer scales using 3D reconstruction techniques based on computed tomography algorithms. This 3D microscopy method is called electron tomography (ET) and has been utilized in the fields of materials science and engineering for more than two decades. Although atomic resolution is one of the current topics in ET research, the development and deployment of intermediate-resolution (non-atomic-resolution) ET imaging methods have garnered considerable attention from researchers. This research trend is probably not irrelevant due to the fact that the spatial resolution and functionality of 3D imaging methods of scanning electron microscopy (SEM) and X-ray microscopy have come to overlap with those of ET. In other words, there may be multiple ways to carry out 3D visualization using different microscopy methods for nanometer-scale objects in materials. From the above standpoint, this review paper aims to (i) describe the current status and issues of intermediate-resolution ET with regard to enhancing the effectiveness of TEM/STEM imaging and (ii) discuss promising applications of state-of-the-art intermediate-resolution ET for materials research with a particular focus on diffraction contrast ET for crystalline microstructures (superlattice domains and dislocations) including a demonstration of in situ dislocation tomography.

    DOI: 10.1093/jmicro/dfaa002

  • ナノマテリアル開発のための超顕微鏡解析共用拠点(九州大学) Reviewed

    松村 晶, 村上 恭和, 波多 聰, 安田 和弘, 工藤 昌輝, 福永 裕美, 阿内 三成, 鳥山 誉亮, 前野 宏志

    まてりあ : 日本金属学会会報   58 ( 12 )   746 - 753   2019.12

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    DOI: 10.2320/materia.58.746

  • Solid Solution Hardening in Supersaturated Al–Mg–Si Alloy Reviewed International journal

    60 ( 12 )   2525 - 2529   2019.12

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    DOI: https://doi.org/10.2320/matertrans.MT-M2019190

  • Microscopic observation of precipitation behavior at friction stirring zone of super duplex stainless steel Reviewed International journal

    Itto Sugimoto, Seung Hwan C. Park, Satoshi Hirano, Hikaru Saito, Satoshi Hata

    Materials Transactions   60 ( 9 )   2003 - 2007   2019.9

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    DOI: 10.2320/matertrans.M2019069

  • Transformation of Bi,Pb-2223 phase from multilayered precursor films Reviewed

    Akiyoshi Matsumoto, Hitoshi Kitaguchi, Yusuke Shimada, Satoshi Hata

    IEEE Transactions on Applied Superconductivity   29 ( 5 )   2019.8

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    DOI: 10.1109/TASC.2019.2907229

  • The formation of defects and their influence on inter-and intra-granular current in sintered polycrystalline 122 phase Fe-based superconductors Reviewed

    Yusuke Shimada, Akiyasu Yamamoto, Yujiro Hayashi, Kohji Kishio, Jun Ichi Shimoyama, Satoshi Hata, Toyohiko J. Konno

    Superconductor Science and Technology   32 ( 8 )   2019.7

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    DOI: 10.1088/1361-6668/ab0eb6

  • Carbon observation by electron energy-loss spectroscopy and thermoelectric properties of graphite added bismuth antimony telluride prepared by mechanical alloying-hot pressing Reviewed

    Kenji Hirota, Katsuhiro Takagi, Kenichi Hanasaku, Kana L. Hasezaki, Hikaru Saito, Satoshi Hata, Kazuhiro Hasezaki

    Intermetallics   109   1 - 7   2019.6

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    DOI: 10.1016/j.intermet.2019.03.005

  • In-situ straining and electron tomography system: its development and performance Reviewed

    Satoshi, Hata, Hikaru, Saito, Mitsu, Murayama, Kazuhisa, Sato, Kudo, Hiroyuki, Hiromitsu, Furukawa, Katsumi, Kawamoto, Noritaka, Horii, Katsumi, Kamo, Shinsuke, Miyazaki, Takashi, Gondo, Hiroya, Miyazaki, Motohiro, Sakamoto, Daisuke, Hirakami

    International Journal of Advanced Microscopy and Theoretical Calculations   2019.6

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    In-situ straining and electron tomography system: its development and performance

  • マテリアル系電子線トモグラフィーの実際と動向 Invited Reviewed

    波多聰, 斉藤光, 村山光宏, 佐藤和久, 工藤博幸

    まてりあ   57 ( 12 )   589 - 594   2018.12

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    DOI: 10.2320/materia.57.589

  • Characterization of Nonradiative Bloch Modes in a Plasmonic Triangular Lattice by Electron Energy-Loss Spectroscopy Reviewed

    Daichi Yoshimoto, Hikaru Saito, Satoshi Hata, Yoshifumi Fujiyoshi, Hiroki Kurata

    ACS PHOTONICS   5 ( 11 )   4476 - 4483   2018.11

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    DOI: 10.1021/acsphotonics.8b00936

  • Magnetic properties and crystal structure of high-purity Fe-(6,6.5,7) mass%Si alloys

    K. Matsuyama, I. Sasaki, S. Nakagawa, H. Era, M. Takezawa, Y. Horibe, S. Hata, C. Kaidou, T. Ogawa, S. Kubo

    2018 IEEE International Magnetic Conference, INTERMAG 2018   2018.10

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    DOI: 10.1109/INTMAG.2018.8508412

  • Synthesis of platinum silicide at platinum/silicon oxide interface by photon irradiation Reviewed

    K. Sato, H. Yasuda, S. Ichikawa, M. Imamura, K. Takahashi, Satoshi Hata, Syo Matsumura, S. Anada, J. G. Lee, H. Mori

    Acta Materialia   154   284 - 294   2018.8

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    DOI: 10.1016/j.actamat.2018.05.045

  • Development of an in-situ straining and time-resolved electron tomography data acquisition system Reviewed

    Satoshi, Hata, Shinsuke, Miyazaki, Takashi, Gondo, Katsumi, Kawamoto, Noritaka, Horii, Kazuhisa, Sato, Hiromitsu, Furukawa, Hiroyuki, Kudo, Hiroya, Miyazaki, Mitsu, Murayama

    Proceedings of 4-th International Congress on 3D Materials Science (3DMS) 2018   18 - 18   2018.6

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    Development of an in-situ straining and time-resolved electron tomography data acquisition system

  • Infiltration behavior of molten Mg and its influence on microstructural evolution in SiC-doped MgB2 wires prepared by internal Mg diffusion process Reviewed

    Yusuke Shimada, Satoshi Hata, Ken ichi Ikeda, Hideharu Nakashima, Akiyoshi Matsumoto, Kazumasa Togano, Hiroaki Kumakura

    Journal of Alloys and Compounds   740   305 - 311   2018.4

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    DOI: 10.1016/j.jallcom.2018.01.012

  • Infiltration behavior of molten Mg and its influence on microstructural evolution in SiC-doped MgB2 wires prepared by internal Mg diffusion process Reviewed

    Yusuke Shimada, Satoshi Hata, Ken-ichi Ikeda, Hideharu Nakashima, Akiyoshi Matsumoto, Kazumasa Togano, Hiroaki Kumakura

    JOURNAL OF ALLOYS AND COMPOUNDS   740   305 - 311   2018.4

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    DOI: 10.1016/j.jallcom.2018.01.012

  • Effects of scandium and zirconium addition on recrystallization behavior of AlMgSi alloy Reviewed

    Ken Ichi Ikeda, Takuya Takashita, Ryutaro Akiyoshi, Satoshi Hata, Hideharu Nakashima, Kazuhiro Yamada, Kenji Kaneko

    Materials Transactions   59 ( 4 )   590 - 597   2018.1

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    DOI: 10.2320/matertrans.L-M2018802

  • コールドクルーシブル溶解法で溶製した高純度Fe-3 mass%Si合金の磁気特性と機械的特性 Reviewed

    82 ( 12 )   476 - 483   2018.1

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    Magnetic properties and mechanical properties of high purity Fe-3 mass%Si alloy by cold crucible levitation melting was investigated. The raw material of the alloy made from electrolytic iron and pure silicon with a purity of 99.99 mass% and 99.999 mass% in amount of impurities excluding Fe and Si were suppressed to 90 ppm or less. In the magnetic property, the iron loss of the alloy was reduced to a third of 35H210, a silicon steel sheet of the same Si composition commercially. This reduction shows the effect of high purity. In the magnetic domain observation, the equal behavior as magnetic properties was observed. In mechanical property, it proved that the high purity Fe-3 mass% Si alloy was easy to draw because the elongation of the alloy was higher than the commercially available silicon steel sheet.

    DOI: 10.2320/jinstmet.J2018008

  • Solid solution hardening in supersaturated Al-Mg-Si alloy Reviewed

    Ken Takata, Kohsaku Ushioda, Kenji Kaneko, Ryutaro Akiyoshi, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   82 ( 8 )   314 - 318   2018.1

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    DOI: 10.2320/jinstmet.J2018015

  • High speed welding of friction-stir-welding for mild steel by gas-tungsten-arc-welding hybrid process Reviewed

    Itto Sugimoto, Seung Hwan C. Park, Satoshi Hirano, Satoshi Hata, Yutaka S. Sato, Hiroyuki Kokawa, Kiyohito Ishida

    Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society   36 ( 1 )   26 - 30   2018.1

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    DOI: 10.2207/qjjws.36.26

  • Three-dimensional visualization of dislocations in a ferromagnetic material by magnetic-field-free electron tomography Reviewed

    Kana L. Hasezaki, Hikaru Saito, Takumi Sannomiya, Hiroya Miyazaki, Takashi Gondo, Shinsuke Miyazaki, Satoshi Hata

    Ultramicroscopy   182   249 - 257   2017.11

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    DOI: 10.1016/j.ultramic.2017.07.016

  • Change in the microstructure and mechanical properties of drawn pearlitic steel with low-temperature aging Reviewed

    D. Hirakami, K. Ushioda, T. Manabe, K. Noguchi, K. Takai, Y. Hata, S. Hata, H. Nakashima

    IOP Conference Series: Materials Science and Engineering   219 ( 1 )   2017.8

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    DOI: 10.1088/1757-899X/219/1/012026

  • Electron Microscopy of the Tin-oxide Nanolayer Formed on the Surface of Sn-Ag-Cu Alloys Reviewed

    H. Sosiati, N. Kuwano, Satoshi Hata

    IOP Conference Series: Materials Science and Engineering   196 ( 1 )   2017.5

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    DOI: 10.1088/1757-899X/196/1/012006

  • In-situ straining and time-resolved electron tomography data acquisition in a transmission electron microscope

    S. Hata, S. Miyazaki, T. Gondo, K. Kawamoto, N. Horii, K. Sato, H. Furukawa, H. Kudo, H. Miyazaki, M. Murayama

    MICROSCOPY   66 ( 2 )   143 - 153   2017.4

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    DOI: 10.1093/jmicro/dfw109

  • Improvement of strength-elongation balance of Al-Mg-Si sheet alloy by utilising Mg-Si cluster and its proposed mechanism Reviewed

    Ken Takata, Kohsaku Ushioda, Ryutaro Akiyoshi, Ken Ichi Ikeda, Jun Takahashi, Satoshi Hata, Kenji Kaneko

    Materials Transactions   58 ( 5 )   728 - 733   2017.1

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    DOI: 10.2320/matertrans.M2016258

  • In-situ straining and time-resolved electron tomography data acquisition in a transmission electron microscope Reviewed

    Satoshi, Hata, Shinsuke, Miyazaki, Takashi, Gondo, Katsumi, Kawamoto, Noritaka, Horii, Kazuhisa, Sato, Hiromitsu, Furukawa, Hiroyuki, Kudo, Hiroya, Miyazaki, Mitsu, Murayama

    Microscopy   66 ( 2 )   143 - 153   2016.12

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    In-situ straining and time-resolved electron tomography data acquisition in a transmission electron microscope
    This paper reports the preliminary results of a new in-situ three-dimensional (3D) imaging system for observing plastic deformation behavior in a transmission electron microscope (TEM) as a directly relevant development of the recently reported straining-and-tomography holder [Sato K et al (2015) Development of a novel straining holder for transmission electron microscopy compatible with single tilt-axis electron tomography. Microsc. 64: 369-375]. We designed an integrated system using the holder and newly developed straining and image-acquisition software and then developed an experimental procedure for in-situ straining and time-resolved electron tomography (ET) data acquisition. The software for image acquisition and 3D visualization was developed based on the commercially available ET software TEMography(TM) We achieved time-resolved 3D visualization of nanometer-scale plastic deformation behavior in a Pb-Sn alloy sample, thus demonstrating the capability of this system for potential applications in materials science.

    DOI: 10.1093/jmicro/dfw109

  • In-situ EBSD study of deformation behavior of retained austenite in a low-carbon quenching and partitioning steel via uniaxial tensile tests Reviewed

    Wan song Li, Hong ye Gao, Hideharu Nakashima, Satoshi Hata, Wen huai Tian

    Materials Characterization   118   431 - 437   2016.8

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    DOI: 10.1016/j.matchar.2016.06.020

  • Development of a novel straining holder for TEM compatible with electron tomography Reviewed

    K. Sato, H. Miyazaki, T. Gondo, S. Miyazaki, M. Murayama, S. Hata

    Proceedings of the 16th European Microscopy Congress   6262 (5 pages) - 288   2016.8

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    Development of a novel straining holder for TEM compatible with electron tomography

    DOI: 10.1002/9783527808465.EMC2016.6262

  • Three-dimensional arrangements of perovskite-type oxide nano-fiber webs for effective soot oxidation Reviewed

    Chanmin Lee, Yukwon Jeon, Satoshi Hata, Joo Il Park, Ryutaro Akiyoshi, Hikaru Saito, Yasutake Teraoka, Yong Gun Shul, Hisahiro Einaga

    Applied Catalysis B: Environmental   191   157 - 164   2016.8

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    DOI: 10.1016/j.apcatb.2016.03.001

  • Microstructural evolution and mechanical properties of a low-carbon quenching and partitioning steel after partial and full austenitization Reviewed

    Wan song Li, Hong ye Gao, Hideharu Nakashima, Satoshi Hata, Wen huai Tian

    International Journal of Minerals, Metallurgy and Materials   23 ( 8 )   906 - 919   2016.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s12613-016-1306-0

  • Plastic deformation and dissolution of ϵ-Cu particles by cold rolling in an over-aged particle dispersion strengthening Fe-2mass%Cu alloy Reviewed

    113   48 - 55   2016.7

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    Deformation and dissolution behaviors are important characteristics of soft dispersion particles in steel to improve the deformability of high strength steel sheets by controlling the work hardening/softening and fracture processes associated with particle dispersion strengthening. In this study, the deformation and dissolution behaviors of ϵ-Cu precipitate particles in a ferrite matrix were investigated to understand how relatively soft dispersion particles influence mechanical responses of the steel compared to hard dispersion particles such as alloy carbides. 35 nm diameter nearly spherical ϵ-Cu particles were initially elongated along the rolling direction by cold rolling, and then these were partly dissolved into the ferrite matrix as the equivalent strain increased. The dissolution of the Cu particles was suggested to be caused by a dynamic partitioning of Cu atoms from the precipitates into the matrix by dislocation shearing at the particle tip sharpened by severe cold working. Simultaneously, the contribution of the ϵ-Cu particles to the dispersion strengthening appeared to be decreased with increasing dislocation density in the matrix during cold rolling. The dislocation density and other defects in the ϵ-Cu particles also increased and the particle/matrix interfaces were serrated or became indistinct as deformation progressed. The morphology, internal defects, and interface structure changes of fine dispersion particles and their correlation with mechanical responses of the alloy are discussed in reference to an identically processed, hard particles dispersed Fe-V binary alloy.

    DOI: 10.1016/j.actamat.2016.03.018

  • Plastic deformation and dissolution of epsilon-Cu particles by cold rolling in an over-aged particle dispersion strengthening Fe-2mass%Cu alloy Reviewed

    Toshihiro Tsuchiyama, Shinji Yamamoto, Satoshi Hata, Mitsuhiro Murayama, Satoshi Morooka, Daichi Akama, Setsuo Takaki

    ACTA MATERIALIA   113   48 - 55   2016.7

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    DOI: 10.1016/j.actamat.2016.03.018

  • Primary-transient creep and anelastic backflow of pure copper deformed at low temperatures and ultra-low strain rates Reviewed

    Jun jie SHEN, Ken ichi IKEDA, Satoshi Hata, Hideharu Nakashima

    Transactions of Nonferrous Metals Society of China   26 ( 7 )   1729 - 1735   2016.7

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    DOI: 10.1016/S1003-6326(16)64285-1

  • Electron microscopy analysis of microstructure of postannealed aluminum nitride template Reviewed

    Jesbains Kaur, Noriyuki Kuwano, Khairur Rijal Jamaludin, Masatoshi Mitsuhara, Hikaru Saito, Satoshi Hata, Shuhei Suzuki, Hideto Miyake, Kazumasa Hiramatsu, Hiroyuki Fukuyama

    Applied Physics Express   9 ( 6 )   2016.6

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    DOI: 10.7567/APEX.9.065502

  • Reduction of dislocation density of aluminium nitride buffer layer grown on sapphire substrate Reviewed

    K. Jesbains, N. Kuwano, K. R. Jamaludin, H. Miyake, K. Hiramatsu, S. Suzuki, Masatoshi Mitsuhara, Satoshi Hata, Y. Soejima

    Journal of Mechanical Engineering and Sciences   10 ( 1 )   1908 - 1916   2016.6

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    DOI: 10.15282/jmes.10.1.2016.14.0182

  • Effect of lower bainite/martensite/retained austenite triplex microstructure on the mechanical properties of a low-carbon steel with quenching and partitioning process Reviewed

    Wan song Li, Hong ye Gao, Zhong yi Li, Hideharu Nakashima, Satoshi Hata, Wen huai Tian

    International Journal of Minerals, Metallurgy and Materials   23 ( 3 )   303 - 313   2016.3

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    DOI: 10.1007/s12613-016-1239-7

  • Hardness and microstructural variation of Al-Mg-Mn-Sc-Zr alloy Reviewed

    Sumiha Ikeshita, Ansis Strodahs, Zineb Saghi, Kazuhiro Yamada, Pierre Burdet, Satoshi Hata, Ken ichi Ikeda, Paul A. Midgley, Kenji Kaneko

    Micron   82   1 - 8   2016.3

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    DOI: 10.1016/j.micron.2015.12.002

  • In-situ study of the deformation-induced rotation and transformation of retained austenite in a low-carbon steel treated by the quenching and partitioning process Reviewed

    W. S. Li, H. Y. Gao, Hideharu Nakashima, Satoshi Hata, W. H. Tian

    Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing   649   417 - 425   2016.1

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    DOI: 10.1016/j.msea.2015.09.076

  • In-situ study of the deformation-induced rotation and transformation of retained austenite in a low-carbon steel treated by the quenching and partitioning process Reviewed

    W. S. Li, H. Y. Gao, H. Nakashima, S. Hata, W. H. Tian

    Materials Science and Engineering A   649   417 - 425   2016.1

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    DOI: 10.1016/j.msea.2015.09.076

  • Microstructural connectivity in sintered ex-situ MgB2 bulk superconductors Reviewed

    Yusuke Shimada, Satoshi Hata, Ken-ichi Ikeda, Hideharu Nakashima, Syo Matsumura, Hiroya Tanaka, Akiyasu Yamamoto, Jun-ichi Shimoyama, Kohji Kishio

    JOURNAL OF ALLOYS AND COMPOUNDS   656   172 - 180   2016.1

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    DOI: 10.1016/j.jallcom.2015.09.253

  • Microstructural connectivity in sintered ex-situ MgB2 bulk superconductors Reviewed

    Yusuke Shimada, Satoshi Hata, Ken Ichi Ikeda, Hideharu Nakashima, Syo Matsumura, Hiroya Tanaka, Akiyasu Yamamoto, Jun Ichi Shimoyama, Kohji Kishio

    Journal of Alloys and Compounds   656   172 - 180   2016.1

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    DOI: 10.1016/j.jallcom.2015.09.253

  • Effect of aging treatment on hydrogen embrittlement of drawn pearlitic steel wire Reviewed

    Daisuke Hirakami, Toshiyuki Manabe, Kohsaku Ushioda, Kei Noguchi, Kenichi Takai, Yoshinori Hata, Satoshi Hata, Hideharu Nakashima

    ISIJ International   56 ( 5 )   893 - 898   2016

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    DOI: 10.2355/isijinternational.ISIJINT-2015-735

  • Quantification of large deformation with punching in dual phase steel and change of its microstructure - Part II Local strain mapping of dual phase steel by a combination technique of electron backscatter diffraction and digital image correlation methods Reviewed

    Nobuo Nakada, Ken Ichi Ikeda, Hiroshi Shuto, Tatsuo Yokoi, Toshihiro Tsuchiyma, Satoshi Hata, Hideharu Nakashima, Setsuo Takaki

    ISIJ International   56 ( 11 )   2077 - 2083   2016

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    DOI: 10.2355/isijinternational.ISIJINT-2016-310

  • Quantification of large deformation with punching in dual phase steel and change of its' microstructure - Part II Local strain mapping of dual phase steel by a combination technique of electron backscatter diffraction and digital image correlation methods Reviewed

    Nobuo Nakada, Ken Ichi Ikeda, Hiroshi Shuto, Tatsuo Yokoi, Toshihiro Tsuchiyma, Satoshi Hata, Hideharu Nakashima, Setsuo Takaki

    Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan   102 ( 5 )   253 - 259   2016

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    DOI: 10.2355/tetsutohagane.TETSU-2015-086

  • Organic mediated synthesis of highly luminescent Li+ ion compensated Gd2O3 Eu3+ nanophosphors and their Judd-Ofelt analysis Reviewed

    R. G Abhilash Kumar, Satoshi Hata, Ken Ichi Ikeda, K. G. Gopchandran

    RSC Advances   6 ( 71 )   67295 - 67307   2016

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    DOI: 10.1039/c5ra26095g

  • Issues of experimental apparatuses for electron tomography observation in crystalline materials Reviewed

    Satoshi Hata

    Microscopy (Oxford, England)   65   i16   2016

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    DOI: 10.1093/jmicro/dfw083

  • Effects of scandium and zirconium addition on recrystallization behavior of Al-Mg-Si alloy Reviewed

    Ken Ichi Ikeda, Takuya Takashita, Ryutaro Akiyoshi, Satoshi Hata, Hideharu Nakashima, Kazuhiro Yamada, Kenji Kaneko

    Keikinzoku/Journal of Japan Institute of Light Metals   66 ( 11 )   609 - 616   2016

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  • Development of MgB2 superconducting wire for the low activation superconducting magnet system operated around core D-T plasma Reviewed

    Yoshimitsu Hishinuma, Akihiro Kikuchi, Yusuke Shimada, Taro Kashiwai, Satoshi Hata, Shuichi Yamada, Takeo Muroga, Akio Sagara

    Fusion Engineering and Design   98-99   1076 - 1080   2015.10

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    DOI: 10.1016/j.fusengdes.2015.05.005

  • Effect of MgO underlayer misorientation on the texture and magnetic property of FePt-C granular film Reviewed

    J. Wang, Satoshi Hata, Y. K. Takahashi, H. Sepehri-Amin, B. S.D.Ch S. Varaprasad, T. Shiroyama, T. Schrefl, K. Hono

    Acta Materialia   91   41 - 49   2015.6

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    DOI: 10.1016/j.actamat.2015.03.007

  • Microstructural studies of the effect of heat-treatment on Bi,Pb-2223 films prepared by RF sputtering Reviewed

    Yusuke Shimada, Takato Kajihara, Satoshi Hata, Ken Ichi Ikeda, Hideharu Nakashima, Akiyoshi Matsumoto, Hitoshi Kitaguchi, Toshiya Doi

    IEEE Transactions on Applied Superconductivity   25 ( 3 )   2015.6

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    DOI: 10.1109/TASC.2014.2382874

  • Microstructural characteristics of ball-milled self-sintered ex situ MgB2 bulks Reviewed

    Yusuke Shimada, Satoshi Hata, Ken Ichi Ikeda, Hideharu Nakashima, Syo Matsumura, Hiroya Tanaka, Akiyasu Yamamoto, Jun Ichi Shimoyama, Kohji Kishio

    IEEE Transactions on Applied Superconductivity   25 ( 3 )   2015.6

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    DOI: 10.1109/TASC.2014.2379928

  • Effect of annealing DC-sputtered Bi,Pb-2223 thin films Reviewed

    A. Matsumoto, H. Kitaguchi, T. Doi, T. Izumi, Y. Hakuraku, Y. Shimada, Satoshi Hata

    IEEE Transactions on Applied Superconductivity   25 ( 3 )   2015.6

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    DOI: 10.1109/TASC.2014.2376193

  • 3D visualization of dislocation arrangement using scanning electron microscope serial sectioning method Reviewed

    Shigeto Yamasaki, Masatoshi Mitsuhara, K. Ikeda, Satoshi Hata, Hideharu Nakashima

    Scripta Materialia   101   80 - 83   2015.5

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    DOI: 10.1016/j.scriptamat.2015.02.001

  • 3D visualization of dislocation arrangement using scanning electron microscope serial sectioning method

    S. Yamasaki, M. Mitsuhara, K. Ikeda, S. Hata, H. Nakashima

    SCRIPTA MATERIALIA   101   80 - 83   2015.5

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    DOI: 10.1016/j.scriptamat.2015.02.001

  • Syntheses of Au@PdAg and Au@PdAg@Ag core-shell nanorods through distortion-induced alloying between Pd shells and Ag atoms over Au nanorods Reviewed

    Masaharu Tsuji, Koichi Takemura, Chihiro Shiraishi, Koji Ikedo, Keiko Uto, Atsuhiko Yajima, Masashi Hattori, Yukinori Nakashima, Kento Fukutomi, Kunihiko Tsuruda, Takeshi Daio, Takeshi Tsuji, Satoshi Hata

    Journal of Physical Chemistry C   119 ( 20 )   10811 - 10823   2015.5

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    DOI: 10.1021/jp509340s

  • Microstructural change due to isochronal annealing in severely plastic-deformed commercial purity aluminium Reviewed

    Yoji Miyajima, Shin Ya Komatsu, Masatoshi Mitsuhara, Satoshi Hata, Hideharu Nakashima, Nobuhiro Tsuji

    Philosophical Magazine   95 ( 11 )   1139 - 1149   2015.4

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    DOI: 10.1080/14786435.2015.1021400

  • Abnormal arrangement of a collagen/apatite extracellular matrix orthogonal to osteoblast alignment is constructed by a nanoscale periodic surface structure Reviewed

    Aira Matsugaki, Gento Aramoto, Takafumi Ninomiya, Hiroshi Sawada, Satoshi Hata, Takayoshi Nakano

    Biomaterials   37   134 - 143   2015.1

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    DOI: 10.1016/j.biomaterials.2014.10.025

  • Luminescence dynamics and concentration quenching in Gd2-xEuxO3 nanophosphor Reviewed

    R. G. Abhilash Kumar, Satoshi Hata, Ken Ichi Ikeda, K. G. Gopchandran

    Ceramics International   41 ( 4 )   6037 - 6050   2015.1

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    DOI: 10.1016/j.ceramint.2015.01.051

  • Influence of aging products on tensile deformation behavior of Al-0.62 mass%Mg-0.32 mass%Si alloy Reviewed

    Ryutaro Akiyoshi, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima, Takeshi Kasama, Ken Takata, Jun Takahashi, Kohsaku Ushioda, Kenji Kaneko

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   79 ( 5 )   273 - 279   2015.1

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    DOI: 10.2320/jinstmet.J2014063

  • Improvement of strength and elongation balance of Al-Mg-Si alloy utilizing Mg-Si cluster and its mechanism Reviewed

    Ken Takata, Kohsaku Ushioda, Ryutaro Akiyoshi, Ken Ichi Ikeda, Jun Takahashi, Satoshi Hata, Kenji Kaneko

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   79 ( 8 )   391 - 397   2015.1

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    DOI: 10.2320/jinstmet.J2015026

  • Effect of aging treatment on hydrogen embrittlement of drawn pearlitic steel wire Reviewed

    Daisuke Hirakami, Toshiyuki Manabe, Kohsaku Ushioda, Kei Noguchi, Kenichi Takai, Yoshinori Hata, Satoshi Hata, Hideharu Nakashima

    Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan   101 ( 1 )   59 - 64   2015.1

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    DOI: 10.2355/tetsutohagane.101.59

  • Development of a novel straining holder for transmission electron microscopy compatible with single tilt-axis electron tomography Reviewed

    K. Sato, H. Miyazaki, T. Gondo, S. Miyazaki, M. Murayama, Satoshi Hata

    Microscopy (Oxford, England)   64 ( 5 )   369 - 375   2015.1

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    DOI: 10.1093/jmicro/dfv021

  • An experimental protocol development of three-dimensional transmission electron microscopy methods for ferrous alloys Towards quantitative microstructural characterization in three dimensions Reviewed

    Satoshi Hata, Kazuhisa Sato, Mitsuhiro Murayama, Toshihiro Tsuchiyma, Hideharu Nakashima

    ISIJ International   55 ( 3 )   623 - 631   2015.1

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    DOI: 10.2355/isijinternational.55.623

  • Codeposition of colloidal platinum particles and iron chloride precursor on TiO2 for efficient catalytic oxidation of CO to CO2 Reviewed

    Hisahiro Einaga, Ryo Shiranita, Hikaru Saito, Satoshi Hata

    Chemistry Letters   44 ( 12 )   1786 - 1788   2015

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    DOI: 10.1246/cl.150903

  • Simulations of TDGL equations for B2 type ordering with two-step phase separation in Fe-Ni-Al alloys

    Ryuichiro Oguma, Syo Matsumura, Minoru Doi, Satoshi Hata, Keisuke Ogata

    International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015   287 - 294   2015

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  • Hysteresis and Domain Behaviors Analysis of High Purity Fe-(5, 6) wt% Si Alloys Reviewed

    Zhe Lei, Takuro Horiuchi, Iwao Sasaki, Chikara Kaido, Horibe Yochi, Satoshi Hata, Toshifumi Ogawa, Hidenori Era

    Physics Procedia   75   695 - 702   2015

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    DOI: 10.1016/j.phpro.2015.12.090

  • Ab-initio study of long-period superstructures and anti-phase boundaries in Al-rich γ-TiAl (L10)-based alloys Reviewed

    94 ( 11 )   1202 - 1218   2014.4

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    In this work, we report first-principles investigation of structural stability of all experimentally observed ordered long-period superstructures (LPSs), viz., r-Al2Ti, h-Al2Ti, Al5Ti 3 along with Al5Ti3′, Al 11Ti7 and Al3Ti2 LPSs, which are observed only as short-range ordered clusters at nanoscale level in Al-rich TiAl-based alloys. We adopt a procedure based on space-filling tiling arrangement of ordered Ti2Al, Ti3Al, Ti4Al motifs and their combination along with a symmetry analysis programme to determine the unit cell and the crystallographic information of Al 5Ti3′, Al11Ti7 and Al 3Ti2 LPSs in terms of L10 fcc unit cell. First-principles calculations are performed to further refine these crystallographic parameters (Wyckoff positions and lattice parameters) obtained from the above procedure. Moreover, it is found that the family of five LPSs have subgroup-supergroup relationships with γ-TiAl (Sp. gr. P4/mmm) and among themselves. Further, we find the inherent stability of r-Al2Ti + γ-TiAl and 2Al5Ti3 + γ-TiAl phase mixtures at 0 K compared to isomolecular Al3Ti2 and Al 11Ti7 LPSs at their respective concentrations. The calculations of single-crystal elastic constants of Al5Ti 3, Al11Ti7, Al3Ti2 and Al5Ti3′ LPSs show all these four structures are mechanically stable. We also calculate antiphase boundary (APB) formation energies for two types of APBs, viz., type-A and type-C in ordered Al 5Ti3 LPS using the supercell approach. The relaxed APB energies for type-A and type-C APBs are 15.44 and 124.16 mJ/m2, respectively.

    DOI: 10.1080/14786435.2014.885135

  • Ab-initio study of long-period superstructures and anti-phase boundaries in Al-rich γ-TiAl (L1<inf>0</inf>)-based alloys

    94 ( 11 )   1202 - 1218   2014.4

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    In this work, we report first-principles investigation of structural stability of all experimentally observed ordered long-period superstructures (LPSs), viz., r-Al2Ti, h-Al2Ti, Al5Ti3along with Al5Ti3′, Al11Ti7and Al3Ti2LPSs, which are observed only as short-range ordered clusters at nanoscale level in Al-rich TiAl-based alloys. We adopt a procedure based on space-filling tiling arrangement of ordered Ti2Al, Ti3Al, Ti4Al motifs and their combination along with a symmetry analysis programme to determine the unit cell and the crystallographic information of Al5Ti3′, Al11Ti7and Al3Ti2LPSs in terms of L10fcc unit cell. First-principles calculations are performed to further refine these crystallographic parameters (Wyckoff positions and lattice parameters) obtained from the above procedure. Moreover, it is found that the family of five LPSs have subgroup-supergroup relationships with γ-TiAl (Sp. gr. P4/mmm) and among themselves. Further, we find the inherent stability of r-Al2Ti + γ-TiAl and 2Al5Ti3+ γ-TiAl phase mixtures at 0 K compared to isomolecular Al3Ti2and Al11Ti7LPSs at their respective concentrations. The calculations of single-crystal elastic constants of Al5Ti3, Al11Ti7, Al3Ti2and Al5Ti3′ LPSs show all these four structures are mechanically stable. We also calculate antiphase boundary (APB) formation energies for two types of APBs, viz., type-A and type-C in ordered Al5Ti3LPS using the supercell approach. The relaxed APB energies for type-A and type-C APBs are 15.44 and 124.16 mJ/m2, respectively. © 2014 Taylor and Francis.

    DOI: 10.1080/14786435.2014.885135

  • Influence of metal ion concentration in the glycol mediated synthesis of Gd2O3 Eu3+ nanophosphor Reviewed

    R. G. Abhilash Kumar, Satoshi Hata, Ken Ichi Ikeda, K. G. Gopchandran

    Ceramics International   40 ( 2 )   2915 - 2926   2014.3

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    DOI: 10.1016/j.ceramint.2013.10.020

  • Low stress creep deformation in high chromium ferritic heat-resistant steel evaluated by helicoid spring creep test method Reviewed

    Shigeto Yamasaki, Masatoshi Mitsuhara, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan   100 ( 5 )   688 - 695   2014.1

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    DOI: 10.2355/tetsutohagane.100.688

  • Microstructural and crystallographic imperfections of MgB2 superconducting wire and their correlation with the critical current density Reviewed

    Mohammed Shahabuddin, Nasser S. Alzayed, Sangjun Oh, Seyong Choi, Minoru Maeda, Satoshi Hata, Yusuke Shimada, Md Shahriar Al Hossain, Jung Ho Kim

    AIP Advances   4 ( 1 )   2014.1

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    DOI: 10.1063/1.4862670

  • Effect of boron particle size on microstructure and superconducting properties of in-situ Cu addition MgB2 multifilamentary wire Reviewed

    Y. Hishinuma, A. Kikuchi, Y. Shimada, Satoshi Hata, T. Takeuchi, S. Yamada, A. Sagara

    Journal of Physics: Conference Series   507 ( PART 2 )   2014

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    DOI: 10.1088/1742-6596/507/2/022009

  • Low-stress creep deformation in long-term aged ferritic heat-resistant steel Reviewed

    Shigeto Yamasaki, Masatoshi Mitsuhara, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Materials Transactions   55 ( 5 )   842 - 849   2014

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    DOI: 10.2320/matertrans.M2013427

  • Diethylene glycol mediated synthesis of Gd2O3 Eu 3+ nanophosphor and its Judd-Ofelt analysis Reviewed

    R. G Abhilash Kumar, Satoshi Hata, K. G. Gopchandran

    Ceramics International   39 ( 8 )   9125 - 9136   2013.12

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    DOI: 10.1016/j.ceramint.2013.05.010

  • Instantaneous creep in face-centered cubic metals at ultralow strain rates by a high-resolution strain measurement Reviewed

    Junjie Shen, Ikeda Kenichi, Satoshi Hata, Hideharu Nakashima

    Journal Wuhan University of Technology, Materials Science Edition   28 ( 6 )   1096 - 1100   2013.12

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    DOI: 10.1007/s11595-013-0826-y

  • Phase transformation behavior and pseudoelastic deformation in SrAl 2O4 Reviewed

    H. Matsuo, K. Ikeda, Satoshi Hata, Hideharu Nakashima, H. Yamada, C. N. Xu

    Journal of Alloys and Compounds   577 ( SUPPL. 1 )   2013.11

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    DOI: 10.1016/j.jallcom.2012.04.009

  • Microstructures developed by super-rapid induction heating-and-quenching (SRIHQ) of Fe-1.4%Cr-1%C pearlitic steel Reviewed

    Yuichiro Koizumi, Takeshi Otsuka, Yoritoshi Minamino, Takemori Takayama, Masanori Ueyama, Takeshi Daio, Satoshi Hata

    Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing   577   29 - 35   2013.8

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    DOI: 10.1016/j.msea.2013.04.024

  • "abnormal transient creep" in fine-grained Al-5356 alloy observed at low strain rates by high-resolution strain measurement Reviewed

    Jun Jie Shen, Kenichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Transactions of Nonferrous Metals Society of China   23 ( 5 )   1209 - 1214   2013.5

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    DOI: 10.1016/S1003-6326(13)62585-6

  • Nanostructure characterization of Ni and B layers as artificial pinning centers in multilayered MgB2/Ni and MgB2/B superconducting thin films

    H. Sosiati, S. Hata, T. Doi, A. Matsumoto, H. Kitaguchi, H. Nakashima

    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS   488   1 - 8   2013.5

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    DOI: 10.1016/j.physc.2013.02.011

  • First-principles investigation of phase stability and electronic structure of tetragonal (P4/m) Ga3-xAlxTi2 (x=03) compounds

    P. S. Ghosh, A. Arya, U. D. Kulkarni, G. K. Dey, T. Nakano, Y. Umakoshi, K. Hagihara, S. Hata

    PHILOSOPHICAL MAGAZINE LETTERS   93 ( 5 )   273 - 282   2013.5

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    DOI: 10.1080/09500839.2013.769068

  • Nanostructure characterization of Ni and B layers as artificial pinning centers in multilayered MgB2/Ni and MgB2/B superconducting thin films Reviewed

    H. Sosiati, Satoshi Hata, T. Doi, A. Matsumoto, H. Kitaguchi, Hideharu Nakashima

    Physica C: Superconductivity and its Applications   488   1 - 8   2013.5

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    DOI: 10.1016/j.physc.2013.02.011

  • First-principles investigation of phase stability and electronic structure of tetragonal (P4/m) Ga 3-x Al x Ti 2 (x = 0-3) compounds Reviewed

    P. S. Ghosh, A. Arya, U. D. Kulkarni, G. K. Dey, T. Nakano, Y. Umakoshi, K. Hagihara, Satoshi Hata

    Philosophical Magazine Letters   93 ( 5 )   273 - 282   2013.5

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    DOI: 10.1080/09500839.2013.769068

  • Application of TDGL model to B2 type ordering with two step phase separation in Fe-Ni-Al alloys

    Ryuichiro Oguma, Syo Matsumura, Minoru Doi, Satoshi Hata, Keisuke Ogata

    21st International Materials Research Congress, IMRC 2012 Proceedings of the Multiscale Materials Modeling 2012 Conference   1535   41 - 47   2013.1

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    DOI: 10.1557/opl.2013.456

  • Imperfection of microstructural control in MgB2 superconducting tapes fabricated using an in-situ powder-in-tube process: Toward practical applications

    S. Hata, H. Sosiati, Y. Shimada, A. Matsumoto, K. Ikeda, H. Nakashima, H. Kitaguchi, H. Kumakura

    Journal of Materials Science   48 ( 1 )   132 - 139   2013.1

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    DOI: 10.1007/s10853-012-6901-5

  • Long-period ordered superstructures that appear in an (Al,Ga)-rich (Al,Ga)Ti system Reviewed

    Takayoshi Nakano, Koji Hagihara, Satoshi Hata, Hajime Shigyo, Hideharu Nakashima, Yukichi Umakoshi, Ashok Arya, Ulhas D. Kulkarni

    Philosophical Magazine   93 ( 1-3 )   22 - 37   2013.1

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    DOI: 10.1080/14786435.2012.699691

  • Imperfection of microstructural control in MgB2 superconducting tapes fabricated using an in-situ powder-in-tube process Toward practical applications Reviewed

    Satoshi Hata, H. Sosiati, Y. Shimada, A. Matsumoto, K. Ikeda, Hideharu Nakashima, H. Kitaguchi, H. Kumakura

    Journal of Materials Science   48 ( 1 )   132 - 139   2013.1

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    DOI: 10.1007/s10853-012-6901-5

  • A new deformation region and how low do you go? - "intrinsic deformation limit"

    Junjie Shen, Kenichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Chinese Materials Congress 2012, CMC 2012 High Performance Structure Materials   747-748   559 - 563   2013

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    DOI: 10.4028/www.scientific.net/MSF.747-748.559

  • The microstructure and superconducting properties of Bi,Pb-2223 thin film fabricated by RF sputtering and annealing method Reviewed

    Akiyoshi Matsumoto, Hitoshi Kitaguchi, Toshiya Doi, Takato Kajihara, Satoshi Hata

    IEEE Transactions on Applied Superconductivity   23 ( 3 )   2013

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    DOI: 10.1109/TASC.2012.2233856

  • Simulations of structure formation in B2 type ordering with two step phase separation in Fe-Ni-Al alloys

    Ryuichiro Oguma, Syo Matsumura, Minoru Doi, Satoshi Hata, Keisuke Ogata

    4th International Symposium on Slow Dynamics in Complex Systems: Keep Going Tohoku 4th International Symposium on Slow Dynamics in Complex Systems: Keep Going Tohoku   1518   703 - 709   2013

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    DOI: 10.1063/1.4794662

  • Influences of microstructure on critical current properties in MgB 2/Al Film Reviewed

    Yusuke Shimada, Yuuki Kubota, Satoshi Hata, Ken Ichi Ikeda, Hideharu Nakashima, Toshiya Doi, Takanori Fujiyoshi

    IEEE Transactions on Applied Superconductivity   23 ( 3 )   2013

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    DOI: 10.1109/TASC.2013.2238284

  • Formation of Bi,Pb-2223 and microstructural evolution in Pb-Ca-Cu deposited Bi-2212(001) single crystal by heat treatment Reviewed

    T. Kajihara, Y. Shimada, Satoshi Hata, K. Ikeda, Hideharu Nakashima, A. Matsumoto, T. Mochiku, H. Kitaguchi, T. Doi

    Physics Procedia   45   69 - 72   2013

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    DOI: 10.1016/j.phpro.2013.04.054

  • 3-dimensional imaging of dislocation microstructures by electron beams

    J. S. Barnard, J. H. Sharp, Satoshi Hata, Masatoshi Mitsuhara, Kenji Kaneko, K. Higashida

    2011 MRS Fall Meeting Three-Dimensional Tomography of Materials   1421   30 - 40   2012.12

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    DOI: 10.1557/opl.2012.430

  • Premonitory effects near critical transition temperature in ordering systems – a monte carlo simulation

    92 ( 35 )   4470 - 4483   2012.12

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    Premonitory effects manifest themselves in an ordering transition of the first kind (order) in the form of anomalously high short-range order (SRO) intensity at temperatures marginally above Tc, the critical transition temperature. This intensity located at the superlattice positions of the long-range ordered (LRO) phase is often attributed to the formation of ‘heterophase fluctuations’ resembling clusters of the LRO phase. Monte Carlo simulations in a hypothetical system showing FCC-to-L12ordering transition have been carried out here to shed some light on this phenomenon and to look into the atomic configurations that make up these fluctuations. 92. © 1997, Taylor & Francis Group, LLC. All rights reserved.

    DOI: 10.1080/14786435.2012.713136

  • ミニ特集「若手研究者からみた研究教育のグローバル化とこれからの日本の材料科学」 Reviewed

    波多聰, 廣澤渉一, 村上恭和, 井誠一郎, 萩原幸司, 中川惠友, 池田賢一, 松田光弘, 宮野公樹, 塗溶

    まてりあ   51   453 - 454   2012.5

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  • Effect of Nitrogen on Creep Rupture Strength and Toughness After Aging of an Austenitic Heat Resistant Steel Reviewed

    Atsushi Sho, Ken-ichi Ikeda, Satoshi Hata, Hideharu Nakashima

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN   98 ( 4 )   9 - 16   2012.4

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    DOI: 10.2355/tetsutohagane.98.117

  • Microscopic role of carbon on MgB2 wire for critical current density comparable to NbTi Reviewed

    Jung Ho Kim, Sangjun Oh, Yoon Uk Heo, Satoshi Hata, Hiroaki Kumakura, Akiyoshi Matsumoto, Masatoshi Mitsuhara, Seyong Choi, Yusuke Shimada, Minoru Maeda, Judith L. MacManus-Driscoll, Shi Xue Dou

    NPG Asia Materials   4 ( 1 )   2012.1

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    DOI: 10.1038/am.2012.3

  • Microscopic role of carbon on MgB2 wire for critical current density comparable to NbTi Reviewed

    Jung Ho Kim, Sangjun Oh, Yoon-Uk Heo, Satoshi Hata, Hiroaki Kumakura, Akiyoshi Matsumoto, Masatoshi Mitsuhara, Seyong Choi, Yusuke Shimada, Minoru Maeda, Judith L. MacManus-Driscoll, Shi Xue Dou

    NPG ASIA MATERIALS   4 ( 1 )   2012.1

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    DOI: 10.1038/am.2012.3

  • Microstructure and superconducting properties of Cu addition MgB2 multifilamentary wires using boron isotope powder as the boron source material Reviewed

    Y. Hishinuma, A. Kikuchi, K. Matsuda, K. Nishimura, Y. Kubota, Satoshi Hata, S. Yamada, T. Takeuchi

    Physics Procedia   36   1486 - 1491   2012.1

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    DOI: 10.1016/j.phpro.2012.06.119

  • Effect of nitrogen on creep rupture strength and toughness after aging of an austenitic heat resistant steel Reviewed

    Atsushi Sho, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan   98 ( 4 )   117 - 124   2012

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    DOI: 10.2355/tetsutohagane.98.117

  • Some long-period superstructures and the related motion of dislocations in Al-rich TiAl single crystals

    Takayoshi Nakano, Satoshi Hata, Koutarou Hayashi, Yukichi Umakoshi

    141st Annual Meeting and Exhibition, TMS 2012 TMS 2012 - 141st Annual Meeting and Exhibition, Supplemental Proceedings   2   797 - 804   2012

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  • Premonitory effects near critical transition temperature in ordering systems – a monte carlo simulation Reviewed

    95 ( 35 )   4470 - 4483   2012

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    Premonitory effects manifest themselves in an ordering transition of the first kind (order) in the form of anomalously high short-range order (SRO) intensity at temperatures marginally above Tc, the critical transition temperature. This intensity located at the superlattice positions of the long-range ordered (LRO) phase is often attributed to the formation of ‘heterophase fluctuations’ resembling clusters of the LRO phase. Monte Carlo simulations in a hypothetical system showing FCC-to-L12 ordering transition have been carried out here to shed some light on this phenomenon and to look into the atomic configurations that make up these fluctuations. 92.

    DOI: 10.1080/14786435.2012.713136

  • Point defect clusters and dislocations in FIB irradiated nanocrystalline aluminum films An electron tomography and aberration-corrected high-resolution ADF-STEM study Reviewed

    Hosni Idrissi, Stuart Turner, Masatoshi Mitsuhara, Binjie Wang, Satoshi Hata, Michael Coulombier, Jean Pierre Raskin, Thomas Pardoen, Gustaaf Van Tendeloo, Dominique Schryvers

    Microscopy and Microanalysis   17 ( 6 )   983 - 990   2011.12

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    DOI: 10.1017/S143192761101213X

  • Point Defect Clusters and Dislocations in FIB Irradiated Nanocrystalline Aluminum Films: An Electron Tomography and Aberration-Corrected High-Resolution ADF-STEM Study Reviewed

    Hosni Idrissi, Stuart Turner, Masatoshi Mitsuhara, Binjie Wang, Satoshi Hata, Michael Coulombier, Jean-Pierre Raskin, Thomas Pardoen, Gustaaf Van Tendeloo, Dominique Schryvers

    MICROSCOPY AND MICROANALYSIS   17 ( 6 )   983 - 990   2011.12

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    DOI: 10.1017/S143192761101213X

  • Creep Mechanisms in a Fine-Grained Al-5356 Alloy at Low Stress and High Temperature Reviewed

    J. J. Shen, K. Ikeda, Satoshi Hata, Hideharu Nakashima

    Materials Transactions   52 ( 10 )   1890 - 1898   2011.11

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    DOI: 10.2320/matertrans.M2011143

  • Electron microscopy observations of MgB2 wire prepared by an internal Mg diffusion method

    Y. Shimada, Y. Kubota, S. Hata, K. Ikeda, H. Nakashima, A. Matsumoto, K. Togano, H. Kumakura

    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS   471 ( 21-22 )   1137 - 1141   2011.11

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    DOI: 10.1016/j.physc.2011.05.143

  • Transient creep in high-purity aluminum at ultra-low strain rate and room temperature by constant stress and changing-stress experiments Reviewed

    Junjie Shen, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Materials Transactions   52 ( 10 )   1885 - 1889   2011.11

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    DOI: 10.2320/matertrans.M2011175

  • Electron microscopy observations of MgB2 wire prepared by an internal Mg diffusion method Reviewed

    Y. Shimada, Y. Kubota, Satoshi Hata, K. Ikeda, Hideharu Nakashima, A. Matsumoto, K. Togano, H. Kumakura

    Physica C: Superconductivity and its Applications   471 ( 21-22 )   1137 - 1141   2011.11

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    DOI: 10.1016/j.physc.2011.05.143

  • Effect of ball-milling treatment on microstructure of in situ powder-in-tube (PIT) MgB2 tape

    H. Sosiati, Satoshi Hata, A. Matsumoto, H. Kitaguchi, H. Kumakura

    AIP Conference Proceedings   1454   246 - 250   2011.11

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    DOI: 10.1063/1.4730732

  • Monte Carlo simulation of antiphase boundaries and growth of antiphase domains in Al5Ti3 phase in Al-rich -TiAl intermetallics Reviewed

    U. D. Kulkarni, Satoshi Hata, T. Nakano, Masatoshi Mitsuhara, K. Ikeda, Hideharu Nakashima

    Philosophical Magazine   91 ( 22 )   3068 - 3078   2011.8

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    DOI: 10.1080/14786435.2011.563761

  • High-angle triple-axis specimen holder for three-dimensional diffraction contrast imaging in transmission electron microscopy Reviewed

    Satoshi Hata, H. Miyazaki, S. Miyazaki, Masatoshi Mitsuhara, Masaki Tanaka, Kenji Kaneko, K. Higashida, K. Ikeda, Hideharu Nakashima, Syo Matsumura, J. S. Barnard, J. H. Sharp, P. A. Midgley

    Ultramicroscopy   111 ( 8 )   1168 - 1175   2011.7

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    DOI: 10.1016/j.ultramic.2011.03.021

  • High-angle triple-axis specimen holder for three-dimensional diffraction contrast imaging in transmission electron microscopy

    S. Hata, H. Miyazaki, S. Miyazaki, M. Mitsuhara, M. Tanaka, K. Kaneko, K. Higashida, K. Ikeda, H. Nakashima, S. Matsumura, J. S. Barnard, J. H. Sharp, P. A. Midgley

    ULTRAMICROSCOPY   111 ( 8 )   1168 - 1175   2011.7

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    DOI: 10.1016/j.ultramic.2011.03.021

  • Low-temperature creep at ultra-low strain rates in pure aluminum studied by a helicoid spring specimen technique Reviewed

    Junjie Shen, Shigeto Yamasaki, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Materials Transactions   52 ( 7 )   1381 - 1387   2011.7

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    DOI: 10.2320/matertrans.M2010405

  • Microstructure in high-density MgB2 wires prepared by an internal Mg diffusion method Reviewed

    Yusuke Shimada, Yuuki Kubota, Satoshi Hata, Ken Ichi Ikeda, Hideharu Nakashima, Akiyoshi Matsumoto, Kazumasa Togano, Jahmahn Hur, Hiroaki Kumakura

    IEEE Transactions on Applied Superconductivity   21 ( 3 PART 3 )   2668 - 2671   2011.6

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    DOI: 10.1109/TASC.2010.2091097

  • Measurement of strain and strain relaxation in free-standing Si membranes by convergent beam electron diffraction and finite element method Reviewed

    H. Gao, K. Ikeda, Satoshi Hata, Hideharu Nakashima, Dong Wang, Hiroshi Nakashima

    Acta Materialia   59 ( 7 )   2882 - 2890   2011.4

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    DOI: 10.1016/j.actamat.2011.01.031

  • Room Temperature Creep and Substructure Formation in Pure Aluminum at Ultra-Low Strain Rates

    J. J. Shen, K. Ikeda, Satoshi Hata, Hideharu Nakashima

    Supplemental Proceedings: Materials Fabrication, Properties, Characterization, and Modeling   2   585 - 592   2011.4

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    DOI: 10.1002/9781118062142.ch70

  • Room temperature creep and substructure formation in pure aluminum at ultra-low strain rates

    J. J. Shen, K. Ikeda, Satoshi Hata, Hideharu Nakashima

    TMS 2011 - 140th Annual Meeting and Exhibition TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings   2   585 - 592   2011

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  • Quantification of internal dislocation density using scanning transmission electron microscopy in ultrafine grained pure aluminium fabricated by severe plastic deformation Reviewed

    Yoji Miyajima, Masatoshi Mitsuhara, Satoshi Hata, Hideharu Nakashima, Nobuhiro Tsuji

    Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing   528 ( 2 )   776 - 779   2010.12

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    DOI: 10.1016/j.msea.2010.09.058

  • Change in electrical resistivity of commercial purity aluminium severely plastic deformed Reviewed

    Yoji Miyajima, Shin Ya Komatsu, Masatoshi Mitsuhara, Satoshi Hata, Hideharu Nakashima, Nobuhiro Tsuji

    Philosophical Magazine   90 ( 34 )   4475 - 4488   2010.11

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    DOI: 10.1080/14786435.2010.510453

  • Ordering transformations in Ni75Mo15Mn10 alloy Reviewed

    U. D. Kulkarni, Satoshi Hata, Masatoshi Mitsuhara, K. Ikeda

    Transactions of the Indian Institute of Metals   63 ( 5 )   819 - 822   2010.10

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    DOI: 10.1007/s12666-010-0125-7

  • Ordering transformations in Ni75Mo15Mn10 alloy

    U. D. Kulkarni, S. Hata, M. Mitsuhara, K. Ikeda

    TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS   63 ( 5 )   819 - 822   2010.10

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    DOI: 10.1007/s12666-010-0125-7

  • Measurement of strain in freestanding Si/SixNy membrane by convergent beam electron diffraction and finite element method Reviewed

    Hongye Gao, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima, Dong Wang, Hiroshi Nakashima

    Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes   49 ( 9 PART 1 )   2010.9

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    DOI: 10.1143/JJAP.49.090208

  • Strain distribution in freestanding Si/SixNy membranes studied by transmission electron microscopy Reviewed

    Hongye Gao, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima, Dong Wang, Hiroshi Nakashima

    Thin Solid Films   518 ( 23 )   6787 - 6791   2010.9

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    DOI: 10.1016/j.tsf.2010.06.023

  • Microstructure and strain distribution in freestanding Si membrane strained by SixNy deposition Reviewed

    Hongye Gao, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima, Dong Wang, Hiroshi Nakashima

    Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing   527 ( 24-25 )   6633 - 6637   2010.9

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    DOI: 10.1016/j.msea.2010.07.004

  • Improvement of aligned lamellar structure by Cr-addition to NbSi2/MoSi2 duplex-silicide crystals Reviewed

    K. Hagihara, T. Nakano, Satoshi Hata, O. Zhu, Y. Umakoshi

    Scripta Materialia   62 ( 8 )   613 - 616   2010.4

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    DOI: 10.1016/j.scriptamat.2010.01.002

  • Electron microscopy analysis for crack propagation behavior of alumina Reviewed

    H. Matsuo, Masatoshi Mitsuhara, K. Ikeda, Satoshi Hata, Hideharu Nakashima

    International Journal of Fatigue   32 ( 3 )   592 - 598   2010.3

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    DOI: 10.1016/j.ijfatigue.2009.06.006

  • Effects of plastic deformation on lamellar structure formation in Ti-39 at.% Al single crystals Reviewed

    Y. Koizumi, T. Fujita, Y. Minamino, Satoshi Hata

    Acta Materialia   58 ( 3 )   1104 - 1115   2010.2

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    DOI: 10.1016/j.actamat.2009.10.027

  • Stress intensity factor and crack propagation behavior of thin α-alumina Reviewed

    74 ( 1 )   24 - 29   2010.1

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    This paper reports the mechanical property and crack propagation behavior of thin ceramics. A method to evaluate the stress intensity factor, K I, of thin ceramics was proposed. Dependence of KI values on the average grain size, d, of thin α-alumina were measured by the method. KI values of thin α-alumina decreased with increasing d values from 4.3 μm to 15.2 μm, while the KI values were almost constant for 15.2 μm ≤d≤63.0 μm. The trend of KI values agreed with the dependence of fracture toughness, Kc, of bulk α-alumina. The thin α-alumina specimens after crack propagation were investigated by scanning electron microscopic electron back-scattered diffraction (SEM/EBSD) analysis. Branched cracks were hardly observed, regardless of grain size. The result indicates that the toughing mechanism do not occur in the thin α-alumina. Dependence of the transgranular fracture rate, F, and the crack deflection rate, D, on d were measured from the orientation distribution maps. However, the F values and the D values were independent of d and approximately constant. The F values and D values depend on d in bulk α-alumina. It indicates that the crack propagation behavior is varied by thinning α-alumina.

    DOI: 10.2320/jinstmet.74.24

  • Crack tip dislocations observed by combining scanning transmission electron microscopy and computed tomography

    S. Sadamatsu, Masaki Tanaka, K. Higashida, Kenji Kaneko, Masatoshi Mitsuhara, Satoshi Hata, M. Honda

    6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009 THERMEC 2009 Supplement   89-91   473 - 478   2010

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    DOI: 10.4028/www.scientific.net/AMR.89-91.473

  • 2種類の回折条件を用いた転位組織の3次元可視化 Reviewed

    Masatoshi Mitsuhara, Satoshi Hata, 池田 賢一, Hideharu Nakashima, Masaki Tanaka, 東田 賢二

    まてりあ   48   2009.12

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    DOI: 10.2320/materia.48.610

  • Premix-PICT 拡散法で作製したMgB_2超伝導バルク体の臨界電流特性に及ぼす微細組織の影響

    嶋田 雄介, 大橋 徹也, 波多 聰, 池田 賢一, 中島 英治, 望月 利彦, 下山 淳一, 堀井 滋, 岸尾 光二

    低温工学   44 ( 12 )   613 - 620   2009.12

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    We report relationships between the superconducting properties, microstructure and fabrication conditions in high-density MgB2 bulks fabricated using a premix-powder-in-closed-tube (PICT) method. The microstructure of the MgB2 bulks depends on the crystallinity of the initial B powders; use of crystalline B powders reduces the amount of MgB2 and increases re-sidual B and MgO. The heat treatment condition influences the grain sizes of MgB2 as well as the distribution and grain sizes of MgO. A lower temperature and a shorter duration of heat treatment tend to form fine grains of MgB2 and uniform dispersion of fine MgO particles. These microstructural variations influence the distribution of effective flux pinning centers such as grain boundaries and fine MgO particles. Different types of critical current density behavior as a function of magnetic field were meas-ured.

    DOI: 10.2221/jcsj.44.613

  • Three-dimensional observation of microstructures in Y123 films fabricated by TFA-MOD method Reviewed

    K. Yamada, Masatoshi Mitsuhara, Satoshi Hata, Y. Miyanaga, Ryo Teranishi, N. Mori, Masashi Mukaida, Kenji Kaneko

    Physica C: Superconductivity and its Applications   469 ( 15-20 )   1446 - 1449   2009.10

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    DOI: 10.1016/j.physc.2009.05.059

  • Research on the formation behavior of recrystallization texture of high purity aluminum foil Reviewed

    Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashevia

    Keikinzoku/Journal of Japan Institute of Light Metals   59 ( 7 )   412 - 415   2009.7

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  • Fabrication of Multilayered MgB2/Ni Thin Films and Their Flux Pinning Properties Reviewed

    Yutaka Tsukano, Toshiya Doi, Hiroki Yamashita, Akira Tanaka, Ikumi Iwasaki, Yoshinori Hakuraku, Hitoshi Kitaguchi, Ken Ichiro Takahashi, Harini Sosiati, Satoshi Hata, Ken Ichi Ikeda, Hideharu Nakashima

    IEEE Transactions on Applied Superconductivity   19 ( 3 )   2807 - 2810   2009.6

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    DOI: 10.1109/TASC.2009.2018527

  • High temperature deformation behavior of sn-based solder alloys under low stress conditions by a helical spring creep testing method Reviewed

    Masahiro Ishibashi, Kensuke Fujimoto, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   73 ( 5 )   373 - 380   2009.5

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    DOI: 10.2320/jinstmet.73.373

  • Stress-induced phase transformation in the vicinity of Vickers indentations in 10mol% CeO2 doped tetragonal ZrO2 polycrystal

    H. Matsuo, K. Ikeda, Satoshi Hata, Hideharu Nakashima

    12th International Conference on Martensitic Transformations, ICOMAT-08 Proceedings of the International Conference on Martensitic Transformations, ICOMAT-08   167 - 172   2009

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  • Erratum Three-dimensional observation of dislocations by electron tomography in a silicon crystal (Materials Transactions (2008) 49:9 (1953-1956)) Reviewed

    Masaki Tanaka, Masaki Honda, Masatoshi Mitsuhara, Satoshi Hata, Kenji Kaneko, Kenji Higashida

    Materials Transactions   49 ( 11 )   2753   2008.11

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    DOI: 10.2320/matertrans.E2008002

  • 電子線トモグラフィーによる結晶材料組織の3次元可視化 Reviewed

    Satoshi Hata, 木村 耕輔, Masatoshi Mitsuhara, Masaki Tanaka, 宮崎 裕也, 高 紅叶, 松山 加苗, Syo Matsumura, 東田 賢二, 池田 賢一, Hideharu Nakashima, 森谷 智一, 土井 稔

    ふぇらむ = Bulletin of the Iron and Steel Institute of Japan : (一社)日本鉄鋼協会会報   13 ( 11 )   719 - 726   2008.11

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  • Crack tip dislocations revealed by electron tomography in silicon single crystal Reviewed

    Masaki Tanaka, Kenji Higashida, Kenji Kaneko, Satoshi Hata, Masatoshi Mitsuhara

    Scripta Materialia   59 ( 8 )   901 - 904   2008.10

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    DOI: 10.1016/j.scriptamat.2008.06.042

  • Crack tip dislocations revealed by electron tomography in silicon single crystal

    Masaki Tanaka, Kenji Higashida, Kenji Kaneko, Satoshi Hata, Masatoshi Mitsuhara

    SCRIPTA MATERIALIA   59 ( 8 )   901 - 902   2008.10

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    DOI: 10.1016/j.scriptamat.2008.06.042

  • Three-dimensional observation of dislocations by electron tomography in a silicon crystal Reviewed

    Masaki Tanaka, Masaki Honda, Masatoshi Mitsuhara, Satoshi Hata, Kenji Kaneko, Kenji Higashida

    Materials Transactions   49 ( 9 )   1953 - 1956   2008.9

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    DOI: 10.2320/matertrans.MAW200828

  • Three-Dimensional Observation of Dislocations by Electron Tomography in a Silicon Crystal

    Masaki Tanaka, Masaki Honda, Masatoshi Mitsuhara, Satoshi Hata, Kenji Kaneko, Kenji Higashida

    MATERIALS TRANSACTIONS   49 ( 9 )   1953 - 1956   2008.9

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    DOI: 10.2320/matertrans.MAW200828

  • Electrical and Stractural Evaluations of Ultrathin SiGe-and Ge-on-insulator Fabricated Using Ge Condensation by Dry Oxidation Reviewed

    Haigui Yang, DONG WANG, Hongye Gao, Kana Hirayama, Ken-ichi Ikeda, Satoshi Hata, Hideharu Nakashima, Hiroshi Nakashima

    Extended Abstracts of the 2008 International Conference on Solid State Devices and Materials (SSDM2008)   438 - 439   2008.9

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    Electrical and Stractural Evaluations of Ultrathin SiGe-and Ge-on-insulator Fabricated Using Ge Condensation by Dry Oxidation

    DOI: 10.7567/ssdm.2008.p-3-18

  • Microscopic properties of long-period ordering in Al-Rich TiAl alloys Reviewed

    Satoshi Hata, T. Nakano, N. Kuwano, Masaru Itakura, Syo Matsumura, Y. Umakoshi

    Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science   39 ( 7 )   1610 - 1617   2008.7

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    DOI: 10.1007/s11661-007-9397-x

  • Microscopic properties of long-period ordering in Al-rich TiAl alloys

    S. Hata, T. Nakano, N. Kuwano, M. Itakura, S. Matsumura, Y. Umakoshi

    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE   39A ( 7 )   1610 - 1617   2008.7

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    DOI: 10.1007/s11661-007-9397-x

  • Electron tomography imaging and analysis of γ′ and γ domains in Ni-based superalloys Reviewed

    20 ( 10 )   1905 - 1909   2008.5

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    A study was conducted to perform 3D microstructural analysis based on electron tomography. The study also attempted to investigate a unique domain structure in a Ni-Al-Ti alloy. A two-phase microstructure,composed of L1 2-ordered γ domains with cuboidal shape and an A1-disordered γ matrix exhibited secondary phase separation during aging precipitation of fine γ in each domain. A variety of precipitation behaviors and microstructural evolutions were observed in the second stage of phase separation, depending on on the alloy composition. The study also demonstrated tomographic DFTEM and EFTEM observations, to clarify the 3D morphology of the γ precipitates and compositional distribution in the phase-separated microstructure.

    DOI: 10.1002/adma.200702461

  • Electron tomography imaging and analysis of gamma ' and gamma domains in Ni-based superalloys

    Satoshi Hata, Kosuke Kimura, Hongye Gao, Syo Matsumura, Minoru Doi, Tomokazu Moritani, Jonathan S. Barnard, Jenna R. Tong, Jo H. Sharp, Paul A. Midgley

    ADVANCED MATERIALS   20 ( 10 )   1905 - +   2008.5

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    DOI: 10.1002/adma.200702461

  • Transmission electron microscopy analysis of C4H 4S-doped MgB2 tapes Reviewed

    N. Yuzuriha, H. Sosiati, Satoshi Hata, N. Kuwano, H. Yamada, N. Uchiyama, A. Matsumoto, H. Kitaguchi, H. Kumakura

    Journal of Physics: Conference Series   97 ( 1 )   2008.2

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    DOI: 10.1088/1742-6596/97/1/012277

  • Electron microscopy analysis of crack propagation behavior of alumina

    H. Matsuo, Masatoshi Mitsuhara, K. Ikeda, Satoshi Hata, Hideharu Nakashima

    Materials Science and Technology Conference and Exhibition, MS and T'08 Materials Science and Technology Conference and Exhibition MS and T'08   2   753 - 761   2008

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  • Influence of top surface passivation on bottom-channel hole mobility of ultrathin SiGe- and Ge-on-insulator Reviewed

    Haigui Yang, Dong Wang, Hiroshi Nakashima, Hongye Gao, Kana Hirayama, Ken Ichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Applied Physics Letters   93 ( 7 )   2008

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    DOI: 10.1063/1.2972114

  • In-situ transmission electron microscopy investigation of aluminum induced crystallization of amorphous silicon

    Ram Kishore, Renu Sharma, Satoshi Hata, Noriyuki Kuwano, Yoshitsuga Tomokiyo, Hameed Naseem, W. D. Brown

    2008 MRS Spring Meeting Amorphous and Polycrystalline Thin-Film Silicon Science and Technology - 2008   1066   345 - 351   2008

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  • Monotonic decrease of Tcs with thinning of the superconducting MgB2 layer in MgB2/Ni and MgB2/B alternately-layered thin films Reviewed

    T. Doi, H. Kitaguchi, Satoshi Hata, K. Fukuyama, K. Masuda, K. Takahashi, T. Yoshidome, Y. Hakuraku, N. Kuwano

    Superconductor Science and Technology   20 ( 12 )   1223 - 1227   2007.12

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    DOI: 10.1088/0953-2048/20/12/023

  • 高傾斜3軸試料ホルダーを用いたSi単結晶中の転位の3D観察 Reviewed

    Satoshi Hata, 宮崎 裕也, Masaki Tanaka, 東田 賢二

    まてりあ : 日本金属学会会報   46 ( 12 )   785   2007.12

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    DOI: 10.2320/materia.46.785

  • TEM analysis of an interface layer formed by the anti-surfactant treatment on a GaN template Reviewed

    N. Kuwano, M. Hijikuro, Satoshi Hata, M. Takeuchi, Y. Aoyagi

    Journal of Crystal Growth   298 ( SPEC. ISS )   284 - 287   2007.1

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    DOI: 10.1016/j.jcrysgro.2006.10.188

  • Microstructures of MgB2/Fe tapes fabricated by an in situ powder-in-tube method using MgH2 as a precursor powder Reviewed

    Satoshi Hata, T. Yoshidome, H. Sosiati, Y. Tomokiyo, N. Kuwano, A. Matsumoto, H. Kitaguchi, H. Kumakura

    Superconductor Science and Technology   19 ( 2 )   161 - 168   2006.2

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    DOI: 10.1088/0953-2048/19/2/002

  • Microstructures of MgB2/Fe tapes fabricated by an in situ powder-in-tube method using MgH2 as a precursor powder

    S Hata, T Yoshidome, H Sosiati, Y Tomokiyo, N Kuwano, A Matsumoto, H Kitaguchi, H Kumakura

    SUPERCONDUCTOR SCIENCE & TECHNOLOGY   19 ( 2 )   161 - 168   2006.2

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    DOI: 10.1088/0953-2048/19/2/002

  • Removing focused ion-beam damages on transmission electron microscopy specimens by using a plasma cleaner Reviewed

    Satoshi Hata, Harini Sosiati, Noriyuki Kuwano, Masaru Itakura, Takayoshi Nakano, Yukichi Umakoshi

    Microscopy (Oxford, England)   55 ( 1 )   23 - 26   2006.1

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    DOI: 10.1093/jmicro/dfl001

  • Removing focused ion-beam damages on transmission electron microscopy specimens by using a plasma cleaner

    S Hata, H Sosiati, N Kuwano, M Itakura, T Nakano, Y Umakoshi

    JOURNAL OF ELECTRON MICROSCOPY   55 ( 1 )   23 - 26   2006.1

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    DOI: 10.1093/jmicro/dfl001

  • Microstructural characterization of whiskers and oxidized surfaceson Sn/FeNi42 and Pb-free alloys

    H. Sosiati, Satoshi Hata, N. Kuwano, Y. Iwane, Y. Morizono, Y. Ohno

    20th Annual Passive Components Symposium, CARTS-Europe 2006 CARTS Europe 2006   237 - 243   2006

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  • Tin whisker formation on a lead-free solder alloy studied by transmission electron microscopy

    H. Sosiati, N. Kuwano, Satoshi Hata, Y. Iwane, Y. Morizono, Y. Ohno

    2006 8th Electronics Packaging Technology Conference, EPTC 2006 8th Electronics Packaging Technology Conference, EPTC   398 - 403   2006

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    DOI: 10.1109/EPTC.2006.342749

  • Relationship between microstructure and Jc property in MgB 2/α-Al2O3 film fabricated by in situ electron beam evaporation Reviewed

    18 ( 10 )   1275 - 1279   2005.10

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    A transmission electron microscopy (TEM) study has been carried out on an MgB2/α-Al2O3 film that exhibits the typical property of critical current density (Jc) under magnetic fields. The MgB2 layer of 300 nm in thickness was grown on a (001)α-Al2O3 substrate using an in situ electron beam evaporation method. Jc of the film takes significantly high values when the applied magnetic field is perpendicular to the film surface. The MgB2 layer consists of fine columnar MgB2 crystals 20-30 nm in size. The columnar MgB2 crystals grow almost perpendicular to the substrate surface and have no crystallographic orientation relationship with the α-Al2O3 substrate because of an amorphous layer formed first on the substrate. A high density of columnar grain boundaries within the MgB2 layer may be effective for the enhancement of the flux-pinning under the perpendicular magnetic field.

    DOI: 10.1088/0953-2048/18/10/005

  • The electrochemical properties of Fe2O3-loaded carbon electrodes for iron-air battery anodes Reviewed

    Bui Thi Hang, Tomonori Watanabe, Minato Eashira, Shigeto Okada, Jun Ichi Yamaki, Satoshi Hata, Seong-Ho Yoon, Isao Mochida

    Journal of Power Sources   150 ( 1-2 )   261 - 271   2005.10

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    DOI: 10.1016/j.jpowsour.2005.02.028

  • Dark-field transmission electron microscopy for a tilt series of ordering alloys Toward electron tomography Reviewed

    Kousuke Kimura, Satoshi Hata, Syo Matsumura, Takao Horiuchi

    Microscopy (Oxford, England)   54 ( 4 )   373 - 377   2005.8

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    DOI: 10.1093/jmicro/dfi060

  • Effects of heat treatments on microstructure formation in MgB 2/YSZ/hastelloy film Reviewed

    Satoshi Hata, Harini Sosiati, Noriyuki Kuwano, Yoshitsugu Tomokiyo, Akiyoshi Matsumoto, Masao Fukutomi, Hitoshi Kitaguchi, Kazunori Komori, Hiroaki Kumakura

    IEEE Transactions on Applied Superconductivity   15 ( 2 PART III )   3238 - 3241   2005.6

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    DOI: 10.1109/TASC.2005.848834

  • Properties of MgB2 films with very high transport critical current densities Reviewed

    Hitoshi Kitaguchi, Toshiya Doi, Yuki Kobayashi, Akiyoshi Matsumoto, Harini Sosiati, Satoshi Hata, Masao Fukutomi, Hiroaki Kumakura

    IEEE Transactions on Applied Superconductivity   15 ( 2 PART III )   3313 - 3316   2005.6

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    DOI: 10.1109/TASC.2005.848866

  • Graded glass coatings for Co-Cr implant alloys Reviewed

    Shigeru Fujino, H. Tokunaga, Satoshi Hata, E. Saiz, A. P. Tomsia

    Journal of Materials Science   40 ( 9-10 )   2499 - 2503   2005.5

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    DOI: 10.1007/s10853-005-1982-z

  • Long-period ordering in a TiAl single crystal with a gradient composition Reviewed

    Satoshi Hata, K. Shiraishi, Masaru Itakura, N. Kuwano, T. Nakano, Y. Umakoshi

    Philosophical Magazine Letters   85 ( 4 )   175 - 185   2005.4

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    DOI: 10.1080/09500830500157462

  • Structural characterization of Cu-Ti-based bulk metallic glass by advanced electron microscopy Reviewed

    M. Ishimaru, Y. Hirotsu, Satoshi Hata, C. Ma, N. Nishiyama, K. Amiya, A. Inoue

    Philosophical Magazine Letters   85 ( 3 )   125 - 133   2005.3

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    DOI: 10.1080/09500830500153776

  • Electron tomography of crystalline microstructures by diffraction contrast imaging Application to ordered alloys Reviewed

    Satoshi Hata, K. Kimura, T. Horiuchi, Syo Matsumura, Y. Tomokiyo

    Microscopy and Microanalysis   11 ( SUPPL. 2 )   18 - 19   2005

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    DOI: 10.1017/S1431927605050026

  • Three-dimensional observation of ordered and disordered precipitates using dark-field TEM tomography

    Satoshi Hata, K. Kimura, Syo Matsumura, Y. Tomokiyo, T. Moritani, M. Doi

    International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 Proceedings of an International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005   2   449 - 454   2005

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  • TEM analysis of long-period superstructures in TiAl single crystal with composition gradient Reviewed

    Satoshi Hata, K. Shiraishi, N. Kuwano, Masaru Itakura, Y. Tomokiyo, T. Nakano, Y. Umakoshi

    Quaternary International   842   259 - 264   2005

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  • Ordering process and formation of anti-phase boundary in long-period superstructures of Al-rich TiAl single crystals

    Takayoshi Nakano, Yosuke Nagasawa, Yukichi Umakoshi, Satoshi Hata, Noriyuki Kuwano, Masaru Itakura, Yoshitsugu Tomokiyo

    International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 Proceedings of an International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005   1   231 - 236   2005

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  • Application of FIB microsampling technique to long-period ordered TiAl single crystal with composition gradient Reviewed

    Satoshi Hata, Kohjiro Shiraishi, Masaru Itakura, Noriyuki Kuwano, Takayoshi Nakano, Yukichi Umakoshi

    Microscopy (Oxford, England)   53 ( 5 )   537 - 540   2004.12

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    DOI: 10.1093/jmicro/dfh049

  • Electron microscopy of MgB2 thin film on YSZ-buffered Hastelloy Reviewed

    Harini Sosiati, Satoshi Hata, N. Kuwano, Y. Tomokiyo, A. Matsumoto, M. Fukutomi, H. Kitaguchi, K. Komori, H. Kumakura

    Physica C: Superconductivity and its Applications   412-414 ( SPEC. ISS. )   1376 - 1382   2004.10

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    DOI: 10.1016/j.physc.2004.01.168

  • MgB2 films with very high critical current densities due to strong grain boundary pinning Reviewed

    H. Kitaguchi, A. Matsumoto, H. Kumakura, T. Doi, H. Yamamoto, K. Saitoh, H. Sosiati, Satoshi Hata

    Applied Physics Letters   85 ( 14 )   2842 - 2844   2004.10

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    DOI: 10.1063/1.1805195

  • Microstructure of MgB 2 films deposited on YSZ/Hastelloy substrate Reviewed

    Satoshi Hata, Harini Sosiati, Yoshitsugu Tomokiyo, Noriyuki Kuwano, Akiyoshi Matsumoto, Masao Fukutomi, Hitoshi Kitaguchi, Kazunori Komori, Hiroaki Kumakura

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   68 ( 9 )   648 - 655   2004.9

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  • HRTEM image contrast and atomistic microstructures of long-period ordered Al-rich TiAl alloys Reviewed

    Satoshi Hata, Kiyoshi Higuchi, Toshitsugu Mitate, Masaru Itakura, Yoshitsugu Tomokiyo, Noriyuki Kuwano, Takayoshi Nakano, Yosuke Nagasawa, Yukichi Umakoshi

    Microscopy (Oxford, England)   53 ( 1 )   1 - 9   2004.3

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    DOI: 10.1093/jmicro/53.1.1

  • Formation of long-period superstructures in TiAl single crystal with composition-gradient

    S. Hata, K. Shiraishi, M. Itakura, Y. Tomokiyo, N. Kuwano, T. Nakano, Y. Umakoshi

    Annual Reports. HVEM LAB., Kyushu Univ., No.28, 23-24   2004.3

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    Formation of long-period superstructures in TiAl single crystal with composition-gradient

  • Anti-phase boundary structure in Al5Ti3 long-period ordered TiAl alloys Invited

    S. Hata, T. Nakano, Y. Nagasawa, K. Higuchi, M. Itakura, Y. Tomokiyo, N. Kuwano, Y. Umakoshi

    Annual Reports. HVEM LAB., Kyushu Univ, 27, (2003), 7-8   2003.11

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    Anti-phase boundary structure in Al5Ti3 long-period ordered TiAl alloys

  • 組成傾斜Al-rich TiAl合金における長周期規則相の形成、 Invited

    白石康二郎, 波多聰, 板倉賢, 友清芳二, 桑野範之, 中野貴由, 馬越佑吉

    2003.11

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  • HRTEM Observation of Partially Ordered Long-Period Superstructures in Al-Rich TiAl Alloys Reviewed

    Satoshi Hata, K. Higuchi, T. Mitate, N. Kuwano, Masaru Itakura, Y. Tomokiyo, T. Nakano, Y. Nagasawa, Y. Umakoshi

    Quaternary International   753   175 - 180   2003

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  • Semi-quantitative HRTEM for partially ordered materials Application to Al-rich TiAl alloys Reviewed

    Satoshi Hata, T. Nakano, K. Higuchi, Y. Nagasawa, N. Kuwano, Masaru Itakura, Y. Tomokiyo, Y. Umakoshi

    Materials Science Forum   426-432 ( 2 )   1721 - 1726   2003

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  • Selectivity of anti-phase boundary introduced in Al5Ti3 superstructure Reviewed

    T. Nakano, Y. Nagasawa, Y. Umakoshi, Satoshi Hata, N. Kuwano, Masaru Itakura, Y. Tomokiyo

    Materials Science Forum   426-432 ( 2 )   1763 - 1770   2003

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  • Short-range order in Al-rich γ-TiAl alloys studied by high-resolution transmission electron microscopy with image processing Reviewed

    82 ( 7 )   363 - 372   2002.7

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    The atomic arrangements of short-range order (SRO) in two Al-rich γ-TiAl alloys with 62.5 and 60.0 at.% Al respectively have been investigated by high-resolution transmission electron microscopy with image processing. For both alloys, SRO structures are formed in Ti-rich (002) layers of the Ll0 ordered γTiAl matrix, in the course of the phase transformation from the Al5Ti3 long-period superstructure phase at lower temperatures to the h-Al2Ti phase at higher temperatures. The SRO structures are composed of three types of ordered cluster: Ti4Al type (square shaped), Ti3Al type (fat rhombus shaped) and Ti2Al type (lean rhombus shaped). The ordered clusters form local microdomains of the Al5Ti3 and Al3Ti2 superstructures in addition to the Al5Ti3 and h-Al2Ti superstructures, by different methods of tiling the ordered clusters. Such ordered clusters or microdomains tend to be in contact with each other through common (310) boundaries. This results in peculiar diffuse streaks in diffraction connecting intensity maxima arising from the long-period superstructures.

    DOI: 10.1080/09500830210137425

  • Short range order in Al-rich g-TiAl of Ti-62.5 and 60.0 at.%Al alloys studied by HRTEM with image processing Reviewed

    S. Hata, K. Higuchi, M. Itakura, N. Kuwano, T. Nakano, K. Hayashi, Y. Umakoshi

    Philosophical Magazine Letters, 82 [7] (2002), 363-372   2002.7

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    Short range order in Al-rich g-TiAl of Ti-62.5 and 60.0 at.%Al alloys studied by HRTEM with image processing
    The atomic arrangements of short-range order (SRO) in two Al-rich gamma-TiAl alloys with 62.5 and 60.0 at.% Al respectively have been investigated by high-resolution transmission electron microscopy with image processing. For both alloys, SRO structures are formed in Ti-rich (002) layers of the L1(0) ordered gamma-TiAl matrix, in the course of the phase transformation from the Al5Ti3 long-period superstructure phase at lower temperatures to the h-Al2Ti phase at higher temperatures. The SRO structures are composed of three types of ordered cluster: Ti4Al type (square shaped), Ti3Al type (fat rhombus shaped) and Ti2Al type (lean rhombus shaped). The ordered clusters form local microdomains of the Al5Ti3&#039; and Al3Ti2 superstructures in addition to the Al5Ti3 and h-Al2Ti superstructures, by different methods of tiling the ordered clusters. Such ordered clusters or microdomains tend to be in contact with each other through common {310) boundaries. This results in peculiar diffuse streaks in diffraction connecting intensity maxima arising from the long-period superstructures.<br />

  • Al5Ti3長周期規則構造のHRTEM像シミュレーション

    樋口潔, 見立壽継, 波多聰, 板倉賢, 友清芳二, 桑野範之, 中野貴由, 馬越佑吉

    2002.7

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  • Short range order sturctures in fcc-based Ni-Mo studied by high resolution transmission electron microscopy with image processing Reviewed

    Satoshi Hata, T. Mitate, N. Kuwano, Syo Matsumura, D. Shindo, K. Oki

    Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing   312 ( 1-2 )   160 - 167   2001.8

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    DOI: 10.1016/S0921-5093(00)01872-4

  • Nanostructure Formation by Short Range Ordering of Al Atoms in Off-stoichiometric g-TiAl Reviewed

    S. Hata, T. Nakano, K. Hayashi, K. Higuchi, M. Itakura, N. Kuwano, Y. Umakoshi

    Proceedings of the Forty Sixth Symposium of the Japanese Society of Electron Microscopy in conjunction with the 7th International Symposium on Advanced Physical Fields, 2001, pp.234-237   2001.7

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    Nanostructure Formation by Short Range Ordering of Al Atoms in Off-stoichiometric g-TiAl

  • 部分的に規則化したNi4Mo合金のHAADF-STEM観察

    田中 信夫, 波多 聰, 沖 憲典, 桑野 範之

    日本金属学会誌   65 ( 5 )   414 - 418   2001.5

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    Partially ordered Ni4Mo alloys were observed for the first time at an atomic resolution with high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM). The Mo atomic columns in the D1a ordered structure were clearly visualized as bright square dots in the HAADF-STEM image. It was found that the ordered regions were observed with a high contrast in the defocus condition a little overfocused from the Scherzer defocus (&Delta;f=sqrtCS&middot;&lambda;) which is the condition for the smallest electron probe in STEM. The phenomenon was interpreted successfully by using the approximate imaging theory for HAADF-STEM proposed by Jesson et al. Using the present experimental and simulation results, an approximate imaging theory for visualizing short range ordered state in binary alloys, such as the Ni4Mo alloys, is proposed.

    DOI: 10.2320/jinstmet1952.65.5_414

  • HAADF-STEM observation of partially ordered Ni4Mo alloys Reviewed

    N. Tanaka, Satoshi Hata, K. Oki, N. Kuwano

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   65 ( 5 )   414 - 418   2001.1

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    DOI: 10.2320/jinstmet1952.65.5_414

  • Microstructures of Ti50Al45Mo5 alloy powders produced by plasma rotating electrode process Reviewed

    Satoshi Hata, K. Oki, T. Hashimoto, N. Kuwano

    Journal of Phase Equilibria and Diffusion   22 ( 4 )   386 - 393   2001.1

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    DOI: 10.1361/105497101770332938

  • HRTEM image contrast of short range order in Ni4Mo Reviewed

    Satoshi Hata, D. Shindo, T. Mitate, N. Kuwano, Syo Matsumura, K. Oki

    Micron   31 ( 5 )   533 - 538   2000.10

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    DOI: 10.1016/S0968-4328(99)00134-1

  • High-angle annular dark-field STEM of partially ordered Ni-19.5at%Mo alloys Reviewed

    N. Tanaka, N. Suzuki, M. Kawasaki, Satoshi Hata, N. Kuwano, K. Oki

    European Physical Journal: Special Topics   10 ( 6 )   2000.1

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  • Short range order in Ni4Mo and its high resolution electron microscope images Reviewed

    Satoshi Hata, Syo Matsumura, N. Kuwano, K. Oki, D. Shindo

    Acta Materialia   46 ( 14 )   4955 - 4961   1998.9

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    DOI: 10.1016/S1359-6454(98)00180-3

  • Interpretation of high resolution transmission electron microscope images of short range ordered Ni4Mo

    S Hata, D Shindo, N Kuwano, S Matsumura, K Oki

    MATERIALS TRANSACTIONS JIM   39 ( 9 )   914 - 919   1998.9

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    DOI: 10.2320/matertrans1989.39.914

  • Short range order and its transformation to long range order in Ni4Mo Reviewed

    Satoshi Hata, Syo Matsumura, Noriyuki Kuwano, Kensuke Oki

    Acta Materialia   46 ( 3 )   881 - 892   1998.1

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    DOI: 10.1016/S1359-6454(97)00314-5

  • Interpretation of high resolution transmission electron microscope images of short range ordered Ni4Mo Reviewed

    Satoshi Hata, Daisuke Shindo, Noriyuki Kuwano, Syo Matsumura, Kensuke Oki

    Materials Transactions   39 ( 9 )   914 - 919   1998

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    DOI: 10.2320/matertrans1989.39.914

  • Monte Carlo study of ordering processes in fcc-based Ni-Mo alloys Reviewed

    Satoshi Hata, H. Fujita, C. G. Schlesier, Syo Matsumura, N. Kuwano, K. Oki

    Materials Transactions   39 ( 1 )   133 - 138   1998

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    DOI: 10.2320/matertrans1989.39.133

  • Time-evolution of 〈1/2 1/2 1/2〉* special point ordering in fcc-based binary alloys studied by Monte Carlo simulation Reviewed

    37 ( 12 )   1748 - 1757   1996.12

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    The Monte Carlo method of simulation was employed in the study of time-evolution of atomic long-range ordering with k* = 1/2 1/2 1/2 in an fcc Ising-model system with first- and second-neighbor pairwise interactions V(1) and V(2). The results should refer to the ordering behavior of carbon atoms and vacancies in metalloid-deficient transition-metal monocarbides, such as TiC1-x and NbC1-x. Fourier power spectra of the obtained atom-configuration involve diffuse streaks in the early stage of the ordering process, and then exhibit sharp spots at k* = 1/2 1/2 1/2 and its equivalent positions in the late stage. When V(1) has a tendency to create unlike-atom pairs in a similar way to V(2), the spectra in the early stage resemble diffraction patterns of TiC1-x and NbC1-x with short-range order. Warren-Cowley parameters α's for atomic pair-correlations increase monotonically with time in even-order coordination shells, suggesting continuous evolution of the 1/2 1/2 1/2-type ordering. In contrast, the values of α for odd-order coordination shells first get enhanced with time and then decrease after reaching a peak. The behavior of odd-order α's is explained in terms of the destructive interference (or frustration) between interactions V(1) and V(2). Two different ordered structures of CuPt (R3m) and cubic (Fd3m) types, which are degenerate in the internal energy, simultaneously appear and their ordered domains grow with time.

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Books

  • 透過電子顕微鏡(TEM) ナノ材料解析の実際、米澤徹、朝倉清髙、幾原雄一(編著)

    ( Role: Sole author)

    講談社  2016.6 

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    学部4年生レベルを設定し、ナノ材料解析の様々な実験技術をまとめたテキストの執筆に参加した。当教員は、透過電子顕微鏡(TEM)の章を担当した。

  • Dependence of ordering process in Ni-based 1 1/2 0 alloy on alloying elements Complex Inorganic Solids −Structural, Stability, and Magnetic Properties of Alloys− Edited by Patrice E. A. Turchi, Antonios Gonis, Krishna Rajan, and Annemarie Meike

    ( Role: Joint author)

    2005.12 

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    Language:English   Book type:Scholarly book

  • 組成傾斜TiAl単結晶に形成された長周期規則構造のFIB・TEM解析

    波多聰, 板倉賢, 桑野範之, 中野貴由, 馬越佑吉( Role: Edit)

    日本金属学会  2006.3 

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    Language:Japanese   Book type:Scholarly book

Presentations

  • 転位ダイナミクスのリアルタイムその場三次元観察法の開発

    #趙一方、#薄靖凱、@高紅叶、@郭子萌、#張琦、@波多聰

    第65回日本顕微鏡学会九州支部学術講演会  2023.12 

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    Event date: 2023.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡   Country:Japan  

  • Planar crystal defects in nanocrystalline BaFe2As2 superconducting bulks

    @Z. Guo, #K. Muraoka, @T. Yamamoto, @H. Gao, @Y. Shimada, #T. Harada, @S. Tokuta, @Y. Hasegawa, @A. Yamamoto, @S. Hata

    2023.12 

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    Event date: 2023.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 4D reconstruction of Co-ped BaFe2As2 sintering process in scanning electron microscopy

    #Y. Ma, #J. Bo, @Y. Hasegawa, @A. Yamamoto, @S. Hata

    2023.12 

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    Event date: 2023.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 4D reconstruction of Co-ped BaFe2As2 sintering process in scanning electron microscopy

    Y. Ma, J. Bo, Y. Hasegawa, A. Yamamoto, S. Hata

    第65回日本顕微鏡学会九州支部学術講演会  2023.12 

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    Event date: 2023.12

    Language:Japanese  

    Venue:福岡   Country:Japan  

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  • 転位ダイナミクスのリアルタイムその場三次元観察法の開発

    趙一方, 薄靖凱, 高紅叶, 郭子萌, 張琦, 波多聰

    第65回日本顕微鏡学会九州支部学術講演会  2023.12 

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    Event date: 2023.12

    Language:Japanese  

    Venue:福岡   Country:Japan  

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  • Planar crystal defects in nanocrystalline BaFe2As2 superconducting bulks

    Z. Guo, K. Muraoka, T. Yamamoto, H. Gao, Y. Shimada, T. Harada, S. Tokuta, Y. Hasegawa, A. Yamamoto, S. Hata

    第65回日本顕微鏡学会九州支部学術講演会  2023.12 

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    Event date: 2023.12

    Language:Japanese  

    Venue:福岡   Country:Japan  

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  • ASTARを用いた多結晶材料組織解析:超伝導材料および鉄鋼材料を中心に(Microstructural analysis of polycrystalline materials using ASTAR: applications to superconductors and steel) Invited

    @波多聰

    TSLワークショップ  2023.11 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京   Country:Japan  

  • ASTARを用いた多結晶材料組織解析:超伝導材料および鉄鋼材料を中心に(Microstructural analysis of polycrystalline materials using ASTAR: applications to superconductors and steel) Invited

    波多聰

    TSLワークショップ  2023.11 

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    Event date: 2023.11

    Language:Japanese  

    Venue:東京   Country:Japan  

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  • In-situ electron tomography for thermally activated solid reaction of anaerobic nanoparticles International conference

    @S. Ihara, @H. Saito, #M. Yoshinaga, @H. Miyazaki, #K. Wada, @S. Hata, @M. Murayama

    The 20th International Microscopy Congress (IMC20)  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  • Applications and strategy of 3D microstructural observation for bulk metals and alloys using electron tomography Invited International conference

    @S. Hata, #Y. Zhao, @H. Gao, @S. Ihara, @H. Saito, @M. Murayama, @D. Egusa, @E. Abe, @T.C. Petersen

    The 20th International Microscopy Congress (IMC20)  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  • Three-dimensional observation of deformation boundary with disclination in high-strength Mg alloys International conference

    @D. Egusa, @H. Saito, #Y. Zhao, @S. Hata, @M. Itakura, @E. Abe

    The 20th International Microscopy Congress (IMC20)  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  • Applications and strategy of 3D microstructural observation for bulk metals and alloys using electron tomography Invited International conference

    S. Hata, Y. Zhao, H. Gao, S. Ihara, H. Saito, M. Murayama, D. Egusa, E. Abe, T.C. Petersen

    The 20th International Microscopy Congress (IMC20)  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Busan   Country:Korea, Republic of  

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  • Three-dimensional observation of deformation boundary with disclination in high-strength Mg alloys International conference

    D. Egusa, H. Saito, Y. Zhao, S. Hata, M. Itakura, E. Abe

    The 20th International Microscopy Congress (IMC20)  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Busan   Country:Korea, Republic of  

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  • In-situ electron tomography for thermally activated solid reaction of anaerobic nanoparticles International conference

    S. Ihara, H. Saito, M. Yoshinaga, H. Miyazaki, K. Wada, S. Hata, M. Murayama

    The 20th International Microscopy Congress (IMC20)  2023.9 

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    Event date: 2023.9

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    Venue:Busan   Country:Korea, Republic of  

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  • Atomic-resolution electron microscopy observation of ordered structures in Ni-based Ni–Mo–Cr alloy International conference

    2023.9 

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    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Fukuoka   Country:Japan  

  • 3D microstructural observation for bulk metals and alloys using electron tomography: applications and strategy International conference

    @S. Hata, #Y. Zhao, @H. Gao, @S. Ihara, @H. Saito, @M. Murayama, @D. Egusa, @E. Abe, @T.C. Petersen

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Influence of hydrogen on martensitic phase transformation in near-equiatomic Ti-Ni alloy: insights from SEM observations and in-situ cooling SEM analysis International conference

    #A. Kalbekov, @H. Akamine, @S. Hata, @S. Ajito, @E. Akiyama, @M. Nishida

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Characteristics of artificial grain boundaries in NdFeAsO/MgO epitaxial thin films International conference

    @H. Gao, #C. Wang, @Z. Guo, #K. Muraoka, @T. Hatano, @K. Iida, @H. Ikuta, @H. Saito, @S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Four-dimensional electron microscopy for sintering behavior of anaerobic nanoparticles International conference

    @S. Ihara, @H. Saito, #M. Yoshinaga, @H. Miyazaki, #K. Wada, @S. Hata, @M. Murayama

    IMC20 Satellite Symposium  2023.9 

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    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • A framework for surface stereo reconstruction and evaluation method in scanning electron microscopy International conference

    #Y. Ma, @S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Optimizating experimental conditions for FIB-SEM serial-sectioning of mica-based glass-ceramics: preliminary report International conference

    #T. Asahara, @H. Gao, @M. Mitsuhara, @T. Kajihara, @S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • STEM imaging of dislocations in drawn pearlitic steel wire: preliminary study International conference

    #S. Wang, #T. Ota, #Y. Zhao, @M. Sakamoto, @S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Microstructural evolution of solute-enriched stacking-faults at kink boundaries in Mg97Zn1Y2 alloy during heat treatment International conference

    #Y. Zhao, @H. Gao, @Z. Guo, @D. Egusa, @E. Abe, @S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Microstructure of roof-type low-angle grain boundaries in Fe(Se,Te) thin films grown on a bi-crystal substrate International conference

    #H. Shi, @Z. Guo, @H. Gao, @Y. Yamauchi, @T. Hatano, @H. Ikuta, @S. Tokuta, @A. Yamamoto, @K. Iida, @S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Crystallization behavior of BaO-SiO2 glass containing a small amount of Li2O International conference

    #T. Kajihara, @K. Akatsuka, @H. Hijiya, @S. Yoshida, #A. Mitsuta, @H. Gao, @S. Fujino, @S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Microstructure of crystal defects in Co-doped BaFe2As2 superconductors International conference

    #T. Harada, #K. Muraoka,@ Z. Guo, @Y. Shimada, @Y. Hasegawa, @S. Tokuta, @A. Yamamoto, @H. Gao, @S. Hata,

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 3D microstructural observation for bulk metals and alloys using electron tomography: applications and strategy International conference

    S. Hata, Y. Zhao, H. Gao, S. Ihara, H. Saito, M. Murayama, D. Egusa, E. Abe, T.C. Petersen

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • STEM imaging of dislocations in drawn pearlitic steel wire: preliminary study International conference

    S. Wang, T. Ota, Y. Zhao, M. Sakamoto, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Optimizating experimental conditions for FIB-SEM serial-sectioning of mica-based glass-ceramics: preliminary report International conference

    T. Asahara, H. Gao, M. Mitsuhara, T. Kajihara, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Microstructure of roof-type low-angle grain boundaries in Fe(Se,Te) thin films grown on a bi-crystal substrate International conference

    H. Shi, Z. Guo, H. Gao, Y. Yamauchi, T. Hatano, H. Ikuta, S. Tokuta, A. Yamamoto, K. Iida, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Microstructure of crystal defects in Co-doped BaFe2As2 superconductors International conference

    T. Harada, K. Muraoka, Z. Guo, Y. Shimada, Y. Hasegawa, S. Tokuta, A. Yamamoto, H. Gao, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Microstructural evolution of solute-enriched stacking-faults at kink boundaries in Mg97Zn1Y2 alloy during heat treatment International conference

    Y. Zhao, H. Gao, Z. Guo, D. Egusa, E. Abe, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Influence of hydrogen on martensitic phase transformation in near-equiatomic Ti-Ni alloy: insights from SEM observations and in-situ cooling SEM analysis International conference

    A. Kalbekov, H. Akamine, S. Hata, S. Ajito, E. Akiyama, M. Nishida

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Four-dimensional electron microscopy for sintering behavior of anaerobic nanoparticles International conference

    S. Ihara, H. Saito, M. Yoshinaga, H. Miyazaki, K. Wada, S. Hata, M. Murayama

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Crystallization behavior of BaO-SiO2 glass containing a small amount of Li2O International conference

    T. Kajihara, K. Akatsuka, H. Hijiya, S. Yoshida, A. Mitsuta, H. Gao, S. Fujino, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Characteristics of artificial grain boundaries in NdFeAsO/MgO epitaxial thin films International conference

    H. Gao, C. Wang, Z. Guo, K. Muraoka, T. Hatano, K. Iida, H. Ikuta, H. Saito, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Atomic-resolution electron microscopy observation of ordered structures in Ni-based Ni–Mo–Cr alloy International conference

    T. Yamamoto, T. Yamamoto, Z. Guo, A. Verma, J.B. Singh, N. Wanderka, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • A framework for surface stereo reconstruction and evaluation method in scanning electron microscopy International conference

    Y. Ma, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Some topics on 3D visualization of microstructure in crystalline materials using electron microscopy Invited International conference

    @S. Hata, #Y. Zhao, @H. Gao, @S. Ihara, @H. Saito, @M. Murayama, @T.C. Petersen

    NANO KOREA 2023 Symposium  2023.7 

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    Event date: 2023.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  • Some topics on 3D visualization of microstructure in crystalline materials using electron microscopy Invited International conference

    S. Hata, Y. Zhao, H. Gao, S. Ihara, H. Saito, M. Murayama, T.C. Petersen

    NANO KOREA 2023 Symposium  2023.7 

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    Language:English  

    Venue:KINTEX   Country:Korea, Republic of  

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  • 鉄系超伝導体の微細組織観察における注目点

    @波多聰、#村岡幸樹、@郭子萌、#馬一銘、#石昊姗、#原田崇彰、@M. Rauf U.K. Khan、@高紅叶、@嶋田雄介、@飯田和昌、@山中晃徳、@山本明保

    日本顕微鏡学会第79回学術講演会  2023.6 

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    Event date: 2023.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:島根   Country:Japan  

  • 鉄系超伝導体の微細組織観察における注目点

    波多聰, 村岡幸樹, 郭子萌, 馬一銘, 石昊姗, 原田崇彰, M. Rauf U.K. Khan, 高紅叶, 嶋田雄介, 飯田和昌, 山中晃徳, 山本明保

    日本顕微鏡学会第79回学術講演会  2023.6 

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    Venue:島根   Country:Japan  

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  • Electron microscopy observation of roof-type low-angle grain boundaries in Fe(Se,Te) thin films grown on bicrystal substrates

    #H. Shi, @Z. Guo, @H. Gao, @T. Yamauchi, @T. Hatano, @H. Ikuta, @S. Tokuta, @A. Yamamoto, @K. Iida, @S. Hata

    2023.6 

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    Event date: 2023.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Ni基Ni-Mo-Cr合金の規則構造の電子顕微鏡観察

    #山本卓弥、@山本知一、@郭子萌、@A. Verma、@J.B. Singh、@N. Wanderka、@波多聰

    日本金属学会・日本鉄鋼協会・軽金属学会九州支部共催令和5年度合同学術講演会  2023.6 

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    Event date: 2023.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本   Country:Japan  

  • Electron microscopy observation of roof-type low-angle grain boundaries in Fe(Se,Te) thin films grown on bicrystal substrates

    H. Shi, Z. Guo, H. Gao, T. Yamauchi, T. Hatano, H. Ikuta, S. Tokuta, A. Yamamoto, K. Iida, S. Hata

    日本金属学会・日本鉄鋼協会・軽金属学会九州支部共催令和5年度合同学術講演会  2023.6 

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    Venue:熊本   Country:Japan  

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  • Ni基Ni-Mo-Cr合金の規則構造の電子顕微鏡観察

    山本卓弥, 山本知一, 郭子萌, A. Verma, J.B. Singh, N. Wanderka, 波多聰

    日本金属学会・日本鉄鋼協会・軽金属学会九州支部共催令和5年度合同学術講演会  2023.6 

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    Language:Japanese  

    Venue:熊本   Country:Japan  

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  • Tranformation behaviors and microstructural changes in hydrogen charged Ti-Ni alloy

    #A. Kalbekov, @H. Akamine, @S. Hata, @S. Ajito, @E. Akiyama, @M. Nishida

    2023.3 

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    Event date: 2023.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Tranformation behaviors and microstructural changes in hydrogen charged Ti-Ni alloy

    A. Kalbekov, H. Akamine, S. Hata, S. Ajito, E. Akiyama, M. Nishida

    日本金属学会2023年春期第172回講演大会  2023.3 

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    Language:English  

    Venue:熊本   Country:Japan  

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  • Toward dynamic 3D visualization of dislocations by electron tomography Invited International conference

    S. Hata, H. Saito, M. Murayama

    The 5th International Congress on 3D Materials Science 2021 (3DMS)  2021.6 

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    Event date: 2021.6

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  • 4D-STEMデータ解析のためのナノビーム電子回折図形の自動認識および分析

    池田錬太, 梶原貴人, 波多 聰, 斉藤 光, 村山光宏

    2021年度日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部・合同学術講演会  2021.6 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • Influence of textured MgO substrates on epitaxially grown NdFeAs(O,F) superconducting thin films

    2021.6 

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    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 結晶欠陥の電子顕微鏡3次元再構築 Invited

    波多聰

    日本鉄鋼協会第181回春季講演大会  2021.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • In-situ 3D imaging in transmission electron microscopy: recent developments and applications to material deformation Invited International conference

    S. Hata, H. Saito, M. Murayama

    Structural Materials for Nuclear and Space Applications (SNSA20)  2020.12 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:India  

  • Ni4Mo合金の短範囲規則状態の収差補正ADF-STEM観察

    田中友晶, 斉藤光, 王超, 波多聰

    第62回日本顕微鏡学会九州支部集会・学術講演会  2020.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:United States  

  • STEMトモグラフィーによる転位の高速三次元観察

    趙一方, 鯉池卓, 仲間陸人, 光原昌寿, 斉藤光, 村山光宏, 波多聰

    第62回日本顕微鏡学会九州支部集会・学術講演会  2020.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:United States  

  • 高速STEMトモグラフィーの実現に向けた深層学習を用いたノイズ除去

    鯉池卓, 斉藤光, 趙一方, 光原昌寿, 村山光宏, 波多聰

    第62回日本顕微鏡学会九州支部集会・学術講演会  2020.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:United States  

  • 3D and 4D reconstruction of dislocations in electron microscopy Invited International conference

    S. Hata, H. Saito, M. Murayama

    The 4th Forum of Materials Genome Engineering (4th ForMGE)  2020.10 

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    Event date: 2020.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:China  

  • 多重暗視野STEM法による物質コントラスト観察

    太田匠, 斉藤光, 波多聰, 坂本昌, 平上大輔

    日本顕微鏡学会第76回学術講演会  2020.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • 鋼におけるオーステナイト成長挙動解析のためのMnトレース観察

    亀井大雅, 斉藤光, 波多聰

    日本顕微鏡学会第76回学術講演会  2020.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • 透過型電子顕微鏡法による結晶材料3次元組織の再構築に関する研究 Invited

    波多聰

    日本顕微鏡学会第76回学術講演会  2020.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • Mg97Zn1Y2合金におけるキンク変形組織の電子線トモグラフィー観察の試み

    波多聰, 趙一方, 斉藤光, 江草大佑, 阿部英司

    日本金属学会2020年春期第166回講演大会  2020.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • ミルフィーユ型Mg合金におけるキンク変形帯の微視的構造

    江草大佑, 斉藤光, 波多聰, 阿部英司

    日本金属学会2020年春期第166回講演大会  2020.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • イジング・モンテカルロ計算機実験による規則合金の原子レベルドメイン構造の再検討

    波多聰, 田中友晶, 斉藤光, 中野貴由

    日本金属学会2020年春期第166回講演大会  2020.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • Electron tomography using diffraction contrast: methods and applications Invited International conference

    S. Hata

    12th Asia-Pacific Microscopy Conference (APMC 2020)  2020.2 

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    Event date: 2020.2

    Language:English   Presentation type:Oral presentation (general)  

    Country:India  

  • Nanoscale Crystal Orientation Mapping on a Textured NdFeAs(O,F)/MgO Superconducting Thin Film International conference

    Zimeng Guo, Hikaru Saito, Keisuke Kondo, Takuya Matsumoto, Kazumasa Iida, Hiroshi Ikuta, Satoshi Hata

    10th ACASC / 2nd Asian-ICMC / CSSJ Joint Conference  2020.1 

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    Event date: 2020.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:China  

  • High-resolution three-dimensional visualization of dislocations in Mo

    Yifang Zhao, Suguru Koike, Hirotaka Sakai, Hikaru Saito, Satoshi Hata

    2019.12 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:China  

  • Nanoscale crystal orientation analysis of a textured NdFeAs(O,F) superconducting thin film on a technical substrate International conference

    Z. Guo, H. Saito, K. Kondo, T. Matsumoto, K. Iida, H. Ikuta, S. Hata

    The 21st Cross Straits Symposium on Energy and Environmental Science and Technology  2019.11 

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    Event date: 2019.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:China  

  • Development of 3D Electron Microscopy Methods for Crystalline Materials Invited International conference

    S. Hata

    The 3rd International Symposium on Advanced Structural Materials -Deformation and Strengthening Mechanisms  2019.11 

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    Language:English   Presentation type:Oral presentation (general)  

    Country:China  

  • Nanoscale Crystal Orientation Mapping Towards Material Informatics for Textured Superconducting Thin Film

    Z. Guo, H. Saito, K. Kondo, T. Matsumoto, K. Iida, H. Ikuta, S. Hata

    2019.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 電子エネルギー損失分光法による三角格子プラズモニック結晶のバンド構造解析

    吉本大地, 斉藤光, 波多聰, 藤吉好史, 倉田博基

    日本物理学会秋季大会  2019.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学   Country:Japan  

  • New functions on electron tomography: magnetic-field-free diffraction contrast imaging and in-situ specimen straining Invited International conference

    S. Hata, H. Saito, M. Murayama

    The 10th Pacific Rim International Conference on Advanced Materials and Processing (PRICM10)  2019.8 

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    Event date: 2019.8 - 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:China  

  • High-resolution three-dimensional visualization of dislocations in Mo using weak-beam dark-field electron tomography International conference

    Yifang Zhao, Hirotaka Sakai, Hikaru Saitou, Satoshi Hata

    The 10th Pacific Rim International Conference on Advanced Materials and Processing (PRICM10)  2019.8 

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    Event date: 2019.8 - 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:China  

  • 明視野法を用いた回折コントラスト電子線トモグラフィー

    坂井裕貴, 斉藤光, 波多聰

    日本顕微鏡学会第75回学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市   Country:Japan  

  • In-situ straining and electron tomography systems: its development and performance Invited International conference

    S. Hata, H. Saito, M. Murayama, K. Sato, H. Kudo, H. Furukawa, K. Kawamoto, N. Horii, K. Kamo, S. Miyazaki, T. Gondo, H. Miyazaki, M. Sakamoto, D. Hirakami

    The 6th International Symposium on Advanced Microscopy and Theoretical Calculations (AMTC6)  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • その場変形転位トモグラフィー観察のための転位線画像抽出の試み

    本田隆裕, 斉藤光, 光原昌寿, 波多聰

    2019年度日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本市   Country:Japan  

  • Development and improvement of electron tomography methods for 3D crystalline microstructures International conference

    S. Hata

    Norway-Japan Seminar 2019  2019.5 

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    Event date: 2019.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Automated crystal orientation mapping and electron energy-loss spectroscopy for materials research Invited International conference

    S. Hata and H. Saito

    MJIIT-ML Workshop Series  2019.3 

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    Event date: 2019.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Parallel-beam STEM dark-field imaging of crystalline microstructure

    S. Hata, Y. Sakai, H. Saito, H. Maeno, S. Matsumura, N. Kuwano and Siti Rahmah Aid

    2018.12 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • その場変形電子線トモグラフィー:転位ダイナミクスの三次元イメージングを目指して Invited

    波多聰, 斉藤光, 村山光宏

    第61回日本顕微鏡学会シンポジウム  2018.11 

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    Event date: 2018.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:富山国際会議場、富山県   Country:Japan  

  • Development of an in-situ tomography system for deformation phenomena Invited International conference

    S. Hata

    International Symposium on Microscopy & Microanalysis of Materials (ISMMM) 2018  2018.10 

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    Event date: 2018.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • In-situ straining and time-resolved electron tomography data acquisition in TEM International conference

    S. Hata, S. Miyazaki, T. Gondo, K. Kawamoto, N. Horii, K. Sato, H. Furukawa, H. Kudo, H. Miyazaki and M. Murayama

    9th International Microscopy Congress (IMC19)  2018.9 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Australia  

  • Three-dimensional observation of dislocations in ferromagnetic iron using magnetic-field-free electron tomography International conference

    S. Hata, K.L. Hasezaki, H. Saito, T. Sannomiya, H. Miyazaki, T. Gondo and S. Miyazaki

    9th International Microscopy Congress (IMC19)  2018.9 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Australia  

  • 強磁性鉄系試料の電子線トモグラフィー観察条件の検討

    波多聰, 吉本健朗, 斉藤 光, 池田賢一, 中島 英治

    日本金属学会2016年春期講演大会(第158回)  2016.3 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大学葛飾キャンパス、東京都   Country:Japan  

  • 電子線トモグラフィーの手法開発と応用先の開拓に関する最近の取り組み Invited

    波多聰

    第1回構造材料関連プロジェクト交流会  2016.3 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:エッサム神田、東京都   Country:Japan  

  • ナノビーム電子回折による多結晶ナノ組織の方位マッピング

    波多聰

    北海道大学大学院工学研究院材料科学部門エネルギー材料講座機能材料学研究室主催 日本金属学会北海道支部、日本顕微鏡学会北海道支部、日本原子力学会北海道支部共催 エネルギー材料シンポジウム「エネルギー社会における材料の役割~最新の成果と展望」  2016.1 

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    Event date: 2016.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学フロンティア応用科学研究棟、北海道札幌市   Country:Japan  

  • TEMでナノ組織を3次元観察する方法:電子線トモグラフィー Invited

    波多聰

    日本金属学会中国四国支部第124回金属物性研究会−電子顕微鏡による微細組織解析−  2016.1 

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    Event date: 2016.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:香川大学工学部、香川県高松市   Country:Japan  

  • 九州大学における3次元電子顕微鏡法の開発 Invited

    波多聰

    九州大学超高圧電子顕微鏡室開設40周年記念講演会  2015.12 

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    Event date: 2015.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学西新プラザ、福岡市   Country:Japan  

  • Electron tomography observation of dislocation morphology near surfaces of Mo(001) thin foils International conference

    S. Hata, M. Shimizu, K. Ikeda, H. Nakashima

    East-Asia Microscopy Conference (EAMC2)  2015.11 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • TEMによる金属表面近傍の欠陥の形態観察 Invited

    波多聰

    日本顕微鏡学会 様々な極微イメージング技術研究部会 第3回研究会「表面の様々な極微イメージング」  2015.11 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:志んぐ荘、兵庫県たつの市新宮   Country:Japan  

  • ビスマス系超伝導薄膜の熱処理に伴う組織変化プロセスの観察

    福田大輝, 波多聰, 中島 英治, 松本明善, 嶋田雄介

    第57回日本顕微鏡学会九州支部総会・学術講演会  2015.11 

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    Event date: 2015.11

    Language:Japanese  

    Venue:九州大学筑紫キャンパス、福岡県   Country:Japan  

  • 伸線パーライト鋼における微細組織の熱処理温度依存性

    羽田佳哲, 波多聰, 中島 英治, 平上大輔

    第57回日本顕微鏡学会九州支部総会・学術講演会  2015.11 

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    Event date: 2015.11

    Language:Japanese  

    Venue:九州大学筑紫キャンパス、福岡県   Country:Japan  

  • 電子線トモグラフィーにおける3次元画像再構成に関連したトピックの紹介 ~材料系の立場から~ Invited

    波多聰, 山本知一, 松村 晶

    「データ駆動科学の新展開」ミニ研究会/公募説明会  2015.10 

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    Event date: 2015.10

    Language:Japanese  

    Venue:九州大学伊都キャンパス、福岡県   Country:Japan  

  • ナノ構造解析のための三次元電子顕微鏡法の進展 Invited

    波多聰

    日本金属学会2015年秋期講演大会(第157回)  2015.9 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学伊都キャンパス、福岡県   Country:Japan  

  • 伸線加工を施したパーライト鋼の低温熱処理による微細組織変化

    羽田佳哲, 波多聰, 中島 英治, 平上大輔

    日本鉄鋼協会第170回秋季講演大会  2015.9 

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    Event date: 2015.9

    Language:Japanese  

    Venue:九州大学伊都キャンパス、福岡県   Country:Japan  

  • Developments in three-dimensional electron microscopy methods for dislocations in crystals Invited

    S. Hata

    International Conference on Electron Microscopy and XXXVI Annual Meeting of the Electron Microscopy Society of India (EMSI-2015)  2015.7 

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    Event date: 2015.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • MgB2の微細構造と機械特性 Invited

    波多聰, 嶋田雄介

    低温工学・超伝導学会 材料研究会主催 MgB2関連フォーラム実行委員会共催 第1回材料研究会シンポジウム 第3回液体水素冷却MgB2超電導線の開発と応用に関するフォーラム  2015.6 

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    Event date: 2015.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学山上会館   Country:Japan  

  • 鉄系試料の電子線トモグラフィー観察の実際

    波多聰, 吉本健朗, 秋吉竜太郎, 池田賢一, 中島英治

    日本顕微鏡学会第71回学術講演会  2015.5 

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    Event date: 2015.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:国立京都国際会館   Country:Japan  

  • 伸線パーライト鋼の低温熱処理に伴うフェライト相の結晶方位分布変化

    波多聰, 羽田佳哲, 平上大輔, 中島英治

    日本金属学会第156回春期講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学駒場キャンパス   Country:Japan  

  • 粗大に成長させた原子クラスタの強度と延性への影響

    高田健, 高橋淳, 潮田浩作, 秋吉竜太郎, 波多聰, 中島英治, 金子賢治, 菊池正夫, 池田賢一

    日本金属学会第156回春期講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学駒場キャンパス   Country:Japan  

  • 強磁性材料の電子線トモグラフィー観察手法の検討

    吉本健朗, 秋吉竜太郎, 波多聰, 池田賢一, 中島英治

    第56回日本顕微鏡学会 九州支部総会・学術講演会  2014.12 

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    Event date: 2014.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:宮崎市民プラザ   Country:Japan  

  • 電子線が拓く新しい3次元イメージング Invited

    波多聰, 山﨑重人、光原昌寿、池田賢一、中島英治

    平成26年度日本結晶学会年会及び総会 物理・鉱物系シンポジウム 量子ビームの拓く新しい3次元イメージング  2014.11 

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    Event date: 2014.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学本郷キャンパス弥生地区農学部   Country:Japan  

  • 強加工を施した弾性異常Fe-Ni-Co-Ti系合金の結晶相・方位マッピング

    波多聰, 白濱順哉, 池田賢一, 中島英治, Kaveh Edalati, 堀田善治, 古田忠彦, 堀渕嘉代, 倉本繁

    日本金属学会 2014年秋期講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学東山キャンパス   Country:Japan  

  • 低温熱処理が及ぼす伸線パーライト鋼の微細組織変化

    羽田佳哲, 池田賢一, 波多聰, 中島英治, 平上大輔

    日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 共催 平成26年度 合同学術講演大会  2014.6 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学伊都キャンパス   Country:Japan  

  • 応力発光体SrAl2O4:Euの優先成長方向について

    福田大輝, 嶋田雄介, 波多聰, 池田賢一, 中島英治, 徐超男

    日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 共催 平成26年度 合同学術講演大会  2014.6 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学伊都キャンパス   Country:Japan  

  • 金属Moの転位の形態に及ぼす結晶界面の影響

    波多聰, 清水真, 池田賢一, 中島英治

    日本顕微鏡学会第70回記念学術講演会  2014.5 

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    Event date: 2014.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:幕張メッセ国際会議場   Country:Japan  

  • 金属材料組織観察のための透過電子顕微鏡技法の開発と応用 Invited

    波多聰

    日本金属学会2014年春期講演大会  2014.3 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • モリブデン双結晶中の転位に及ぼす鏡像力の影響

    清水真, 波多聰, 池田賢一, 中島英治

    日本金属学会2014年春期講演大会  2014.3 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 最近のTEM技法による金属材料組織の観察事例 Invited

    波多聰

    第5回中性子小角散乱解析法研究会~金属材料への適用に向けた産・学・官の取り組み~  2014.3 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Long-period superstructures and their ordering behaviour in Al-rich TiAl alloy: seeing nanostructure apart from phase diagrams Invited International conference

    Satoshi Hata, T. Nakano, U. D. Kulkarni, A. Arya, P. S. Gosh, G. K. Dey, H. Nakashima

    The International Union of Materials Research Societies (IUMRS) (THERMEC 2013) International Conference in Asia 2013  2013.12 

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:India  

  • 電子線トモグラフィーを用いたモリブデン内の転位に働く鏡像力の評価

    清水真, 波多聰, 池田賢一, 中島英治

    第55回日本顕微鏡学会九州支部学術講演会  2013.12 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Ordering phenomena in alloys manifesting influences of long-range atomic interactions Invited International conference

    Satoshi Hata, U. D. Kulkarni, A. Arya, S. Matsumura, H. Nakashima

    International Conference on Processing & Manufacturing of Advanced Materials (THERMEC 2013)  2013.12 

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  • Mg2Cu添加 in-situ MgB2線材の微細組織におけるB/Mg比と原料粉末の影響 International conference

    Satoshi Hata, 池田賢一, 中島英治, 佐伯良光, 嶋田雄介, 菱沼良光

    日本金属学会2013年秋期講演大会(第153回)  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢   Country:Japan  

  • Electron tomography observation of microstructure in crystalline materials Invited International conference

    Satoshi Hata

    International Center for Materials Research (ICMR) Summer School on Materials in 3D: Modeling and Imaging at Multiple Length Scales  2013.8 

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    Event date: 2013.8

    Language:English   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Country:United States  

  • Optimise electron tomography observation conditions for ferromagnetic samples: the case of ferritic steel Invited International conference

    Satoshi Hata, K. Sato, M. Murayama, H. Nakashima

    International Conference on Electron Microscopy and XXXIV Annual Meeting of the Electron Microscope Society of India (EMSI)  2013.7 

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    Event date: 2013.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:India  

  • 強磁性材料の透過電子顕微鏡観察における電子線の偏向の測定

    吉本健朗, 秋吉竜太郎, 嶋田雄介, 波多聰, 池田賢一, 中島英治

    日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 共催 平成25年度 合同学術講演大会  2013.6 

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    Event date: 2013.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 磁性体試料のためのSTEM連続傾斜観察条件の検討

    波多 聰, 秋吉竜太郎, 池田賢一, 中島英治, 吉本健朗, 赤間大地, 土山聡宏, 佐藤和久, ニーブン・モンセギュー, 村山光宏

    日本金属学会2013年春期講演大会(第152回)  2013.5 

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    Event date: 2013.5

    Language:Japanese  

    Venue:大阪府   Country:Japan  

  • 磁性体のための電子線トモグラフィー観察条件の検討 International conference

    波多 聰, 佐藤和久, 村山光宏, 中島英治

    日本顕微鏡学会第69回学術講演会  2013.5 

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    Event date: 2013.5

    Language:Japanese  

    Venue:大阪府   Country:Japan  

  • 高傾斜3軸試料ホルダーの高機能化 International conference

    波多 聰, 宮崎裕也, 光原昌寿, 木本浩司, 池田賢一, 中島英治

    日本顕微鏡学会第69回学術講演会  2013.5 

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    Event date: 2013.5

    Language:Japanese  

    Venue:大阪府   Country:Japan  

  • Strategy of microstructural observation for the development of superconducting materials Invited International conference

    Satoshi Hata, Y. Shimada, T. Kajihara, K. Ikeda, H. Nakashima, K. Higashikawa, M. Inoue, T. Kiss, A. Matsumoto, H. Kitaguchi, H. Kumakura, T. Doi, J. H. Kim, S. X. Dou

    2013 MRS Spring Meeting & Exhibit  2013.4 

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    Event date: 2013.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  • High Tc and Jc of Bi,Pb-2223 thin film fabricated by sputtering method International conference

    A. Matsumoto, H. Kitaguchi, T. Doi, T. Kajihara, S. Hata

    25th International Symposium on Superconductivity  2012.12 

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    Event date: 2012.12

    Language:Others  

    Country:Japan  

  • Recent findings in microstructural characters of superconducting wires and tapes Invited International conference

    S. Hata, Y. Shimada, T. Kajihara, K. Ikeda, H. Nakashima, A. Matsumoto, H. Kitaguchi, H. Kumakura, T. Doi, A. Yamamoto, H. Shimoyama, K. Kishio, K. Higashikawa, M. Inoue, T. Kiss

    25th International Symposium on Superconductivity  2012.12 

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    Event date: 2012.12

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Formation of Bi,Pb-2223 and microstructural evolution in Pb-Ca-Cu deposited Bi-2212(001) single crystal by heat treatment International conference

    T. Kajihara, Y. Shimada, S. Hata, K. Ikeda, H. Nakashima, A. Matsumoto, T. Mochiku, H. Kitaguchi, T. Doi

    25th International Symposium on Superconductivity  2012.12 

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    Event date: 2012.12

    Language:Others  

    Country:Japan  

  • Low-Mag STEMによる材料組織観察の試み

    波多聰, 吉本健朗, 今村亮祐, 秋吉竜太郎, 光原昌寿, 池田賢一, 中島英治, 佐藤和久, Niven Monsegue, 村山光宏, 赤間大地, 土山聡宏

    第54回日本顕微鏡学会九州支部総会ならびに学術講演会  2012.11 

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    Event date: 2012.11

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:別府・豊泉荘、大分県別府市   Country:Japan  

  • 積層薄膜法によるPbを含む高温超伝導相Bi-2223薄膜の作製

    松本明善, 北口仁, 土井俊哉, 梶原貴人, 波多聰

    第86回2012年度秋季低温工学・超電導学会  2012.11 

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    Event date: 2012.11

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:いわて県民情報交流センター(アイーナ)、岩手県   Country:Japan  

  • スパッタ法により作製したBi,Pb-2223薄膜の微細組織と熱処理条件の関係

    梶原貴人, 嶋田雄介, 波多聰, 池田賢一, 中島英治, 土井稔, 松本明善, 北口仁

    第86回2012年度秋季低温工学・超電導学会  2012.11 

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    Event date: 2012.11

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:いわて県民情報交流センター(アイーナ)、岩手県   Country:Japan  

  • Electron tomography observations of dislocations near a symmetric tilt boundary in a deformed Mo bicrystal Invited International conference

    S. Hata, R. Akiyoshi, M. Mitsuhara, K. Ikeda, Y. Miyajima, H. Nakashima, M. Kato

    The 5th International Symposium on Designing, Processing and Properties of Advanced Engineering Materials (ISAEM-2012)  2012.11 

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    Event date: 2012.11

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • The microstructure and superconducting properties of Bi,Pb-2223 thin films fabricated by sputtering method post annealing method International conference

    A. Matsumoto, H. Kitaguchi, T. Doi, S. Hata

    Applied Superconductivity Conference 2012  2012.10 

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    Event date: 2012.10

    Language:Others  

    Country:United States  

  • Microscopic role of carbon on MgB2 wire for critical current density comparable to NbTi International conference

    J. Kim, S. Oh, U.-U. Heo, S. Hata, H. Kumakura, A. Matsumoto, M. Mitsuhara, S. Choi, Y. Shimada, M. Maeda, J. L. MacManus-Driscoll, S. Dou

    Applied Superconductivity Conference 2012  2012.10 

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    Event date: 2012.10

    Language:Others   Presentation type:Oral presentation (general)  

    Country:United States  

  • Microstructural observation of MgB2 wires fabricated by low-temperature in-situ processes with Mg2Cu addition International conference

    S. Hata, Y. Kubota, Y. Shimada, Y. Hishinuma, K. Ikeda, H. Nakashima, A. Kikuchi

    Applied Superconductivity Conference 2012  2012.10 

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    Event date: 2012.10

    Language:Others   Presentation type:Oral presentation (general)  

    Country:United States  

  • Influences of microstructure on critical current properties in MgB2/Al film International conference

    Y. Shimada, Y. Kubota, S. Hata, K. Ikeda, H. Nakashima, T. Doi, T. Fujiyoshi

    Applied Superconductivity Conference 2012  2012.10 

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    Event date: 2012.10

    Language:Others  

    Country:United States  

  • Multi-scale and multi-physics analysis of REBa2Cu3O7-δ coated conductors International conference

    2012.10 

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    Event date: 2012.10

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:Oregon Convention Center, Portland, Oregon   Country:United States  

  • Fe-Al-Ni合金における二段階相分離過程に伴う組織形成のシミュレーション

    小隈龍一郎、松村晶、江口鐵男、土井稔、波多聰、緒方啓丞

    日本金属学会2012年秋期(第151回)大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • Fe基およびNi基合金における2段階相分離挙動

    土井稔、久野泰弘、波多聰、中島英治、小隈龍一郎、松村晶、山中淳二

    日本金属学会2012年秋期(第151回)大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • Fe-Al-Ni合金における2段階相分離過程の電子線トモグラフィー観察

    波多聰、緒方啓丞、光原昌寿、池田賢一、中島英治、土井稔、小隈龍一郎、松村晶

    日本金属学会2012年秋期(第151回)大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • 超伝導材料の電子顕微鏡観察 Invited

    波多聰

    低温工学・超電導学会 九州・西日本支部  2012.9 

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    Event date: 2012.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • 電子線トモグラフィーによる結晶格子欠陥の3次元観察 Invited

    波多聰

    精密工学会 2012年度秋季大会  2012.9 

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    Event date: 2012.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:九州工業大学戸畑キャンパス   Country:Japan  

  • Microstructural analysis of MgB2 superconducting wires by electron microscopy and x-ray computed tomography International conference

    S. Hata, Y. Shimada, M. Mitsuhara, K. Ikeda, H. Nakashima, A. Matsumoto, K. Togano, H. Kumakura, H. Kitaguchi, J. H. Kim, S. X. Dou, J. Gelb, W. Yun

    International Conference on 3D Materials Science 2012  2012.7 

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    Event date: 2012.7

    Language:Others  

    Country:United States  

  • Fitting tomography-based transmission electron microscopy (TEM) to structural material problems: toward effective 3D TEM imaging and analysis Invited International conference

    S. Hata, R. Akiyoshi, K. Ogata, M. Mitsuhara, K. Ikeda, H. Nakashima, S. Matsumura, M. Doi, M. Murayama

    2012.6 

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    Event date: 2012.6

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Electron microscopy observation of Bi-2223 tape fabricated by a controlled overpressure process International conference

    S. Hata, Y. Shimada, T. Kajihara, Y. Kubota, K. Ikeda, H. Nakashima, A. Matsumoto, H. Kitaguchi

    2012.5 

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    Event date: 2012.5

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Microstructural comparison between in-situ and ex-situ MgB2 bulks International conference

    Y. Shimada, S. Hata, K. Ikeda, H. Nakashima, H. Tanaka, A. Yamamoto, J. Shimoyama, K. Kishio

    2012.5 

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    Event date: 2012.5

    Language:Others  

    Country:Japan  

  • Microstructural improvement in (Bi,Pb)2Sr2Ca2Cu3O10+δ thin film by annealing International conference

    International Cryogenic Engineering Conference 24-International Cryogenic Materials Conference 2012 (ICEC 24 – ICMC 2012)  2012.5 

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    Event date: 2012.5

    Language:Others  

    Venue:Fukuoka International Congress Center   Country:Japan  

  • SmBa2Cu3Oy超伝導線材における結晶配向の局所変化と微細組織の関係

    波多聰, 梶原貴人, 久保田雄貴, 嶋田雄介, 池田賢一, 中島英治, A. Matsekh, 井上昌睦, 木須隆暢

    日本金属学会2012年春期(第150回)大会  2012.3 

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    Event date: 2012.3

    Language:Others  

    Venue:横浜国立大学常盤台キャンパス   Country:Japan  

  • Microstructural formation of MgB2 superconducting tapes in an in-situ powder-in-tube process International conference

    S. Hata, H. Sosiati, Y. Shimada, A. Matsumoto, K. Ikeda, H. Nakashima, H. Kitaguchi, H. Kumakura

    International Symposium on Role of Electron Microscopy in Industry ~Toward genuine collaboration between academia and industry~  2012.1 

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    Event date: 2012.1

    Language:Others  

    Country:Japan  

  • Transmission electron microscopy observation of MgB2/Ni and MgB2/B multilayered superconducting thin films International conference

    H. Sosiati, S. Hata, T. Doi, A. Matsumoto, H. Kitaguchi

    International Symposium on Role of Electron Microscopy in Industry ~Toward genuine collaboration between academia and industry~  2012.1 

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    Event date: 2012.1

    Language:Others  

    Country:Japan  

  • Mo双結晶の圧縮変形で生じた粒界近傍の転位の3次元観察

    波多聰, 嶋田雄介, 光原昌寿, 池田賢一, 中島英治, 松本明善, J. H. Kim, 戸叶一正, 熊倉浩明

    日本金属学会2013年秋期(第149回)大会  2011.11 

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    Event date: 2011.11

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:沖縄コンベンションセンター   Country:Japan  

  • Quantitative microstructural analysis in metallic materials using electron tomography Invited International conference

    S. Hata, S. Matsumura, N. Kuwano

    2011.11 

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    Event date: 2011.11

    Language:Others   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • 電子顕微鏡による結晶内部ナノ構造の3次元可視化技術 Invited

    波多聰

    九州大学 総理工セミナー  2011.9 

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    Event date: 2011.9

    Language:Others   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:千里阪急ホテル 大阪府豊中市   Country:Japan  

  • 先端電子顕微鏡解析法の可能性 Invited

    波多聰

    日本金属学会セミナー「バルクナノメタル 構造用金属材料の新たな可能性」  2011.9 

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    Event date: 2011.9

    Language:Others   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:神田エッサム こだまホール 東京都千代田区   Country:Japan  

  • Three-dimensional analysis of dislocations in metals using electron tomography Invited International conference

    M. Mitsuhara, S. Hata, K. Ikeda, H. Nakashima

    International Conference on Electron Nanoscopy & XXXII Annual Meeting of EMSI  2011.7 

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    Event date: 2011.7

    Language:Others   Presentation type:Oral presentation (general)  

    Country:India  

  • High-angle triple-axis specimen holders developed for electron tomography Invited International conference

    S. Hata, H. Miyazaki, S. Miyazaki, M. Mitsuhara, S. Matsumura, K. Kimoto, K. Ikeda, H. Nakashima

    International Conference on Electron Nanoscopy & XXXII Annual Meeting of EMSI  2011.7 

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    Event date: 2011.7

    Language:Others   Presentation type:Oral presentation (general)  

    Country:India  

  • Effectiveness of modern conventional electron microscopy for materials research Invited International conference

    S. Hata

    2011.5 

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    Event date: 2011.5

    Language:Others   Presentation type:Oral presentation (invited, special)  

    Country:Indonesia  

  • Alテープ上に作製したMgB2薄膜の微細組織構造

    嶋田雄介, 久保田雄貴, 波多聰, 池田賢一, 中島英治, 土井俊哉, 吉原和樹

    低温工学・超電導学会  2011.5 

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    Event date: 2011.5

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:物質・材料研究機構   Country:Japan  

  • X線CTによるMgB2線材の組織観察

    波多聰, 嶋田雄介, 光原昌寿, 池田賢一, 中島英治, 松本明善, J. H. Kim, 戸叶一正, 熊倉浩明, 北口仁, S. X. Sou

    低温工学・超電導学会  2011.5 

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    Event date: 2011.5

    Language:Others  

    Venue:物質・材料研究機構   Country:Japan  

  • Mg2Cuを添加源としたCu添加MgB2線材の微細構造

    久保田雄貴, 嶋田雄介, 波多聰, 菱沼良光, 池田賢一, 中島英治

    低温工学・超電導学会  2011.5 

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    Event date: 2011.5

    Language:Others  

    Venue:物質・材料研究機構   Country:Japan  

  • 電子線トモグラフィーによるFe基合金の相分離組織の3次元観察

    緒方啓丞, 光原昌寿, 波多聰, 土井稔, 松村晶, 池田賢一, 中島英治

    日本顕微鏡学会  2011.5 

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    Event date: 2011.5

    Language:Others  

    Venue:福岡国際会議場   Country:Japan  

  • 回折コントラストに着目した電子線トモグラフィーの結晶材料への応用 Invited

    光原昌寿, 河合智也, 池田賢一, 波多聰, 板倉賢, 中島英治, 西田稔

    日本顕微鏡学会  2011.5 

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    Event date: 2011.5

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:福岡国際会議場   Country:Japan  

  • MgB2超伝導体におけるマクロ組織観察の重要性

    嶋田雄介, 久保田雄貴, 波多聰, 池田賢一, 中島英治, 松本明善, 熊倉浩明, 戸叶一正

    日本顕微鏡学会  2011.5 

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    Event date: 2011.5

    Language:Others  

    Venue:福岡国際会議場   Country:Japan  

  • Mg2Cuを添加したMgB2超伝導線材の微細構造

    久保田雄貴, 嶋田雄介, 波多聰, 菱沼良光, 池田賢一, 中島英治

    日本顕微鏡学会  2011.5 

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    Event date: 2011.5

    Language:Others  

    Venue:福岡国際会議場   Country:Japan  

  • Ni基合金のHVEM-EELSトモグラフィー観察の試み

    波多聰, 緒方啓丞, 大尾岳史, 松村晶, 池田賢一, 中島英治, 安田和弘, 土井稔

    日本顕微鏡学会  2011.5 

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    Event date: 2011.5

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:福岡国際会議場   Country:Japan  

  • A new high-angle triple-axis specimen holder and its applications to electron tomography Invited International conference

    S. Hata, M. Mitsuhara

    EMAT Friday Lecture  2011.3 

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    Event date: 2011.3

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Belgium  

  • TEMによる転位の3次元分布観察 Invited

    波多聰

    PF研究会「X線トポグラフィーの現状と展望」  2010.12 

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    Event date: 2010.12

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:つくば市   Country:Japan  

  • 金属材料のTEMトモグラフィー観察における進展 Invited

    波多聰

    平成22年度日本顕微鏡学会北海道支部学術講演会  2010.12 

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    Event date: 2010.12

    Language:Others   Presentation type:Oral presentation (invited, special)  

    Venue:北海道   Country:Japan  

  • 鉄鋼研究におけるSTEMイメージングと3次元トモグラフィーの応用 Invited

    波多聰

    日本鉄鋼協会 鉄鋼科学セミナー2010「鉄の強度、塑性と破壊:新しい要求に向けた基礎と新規アプローチ」  2010.12 

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    Event date: 2010.12

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:東京   Country:United States  

  • Three-dimensional microstructural observation in crystalline materials by transmission electron microscopy International conference

    S. Hata, M. Mitsuhara, T. Kawai, K. Ogata, K. Ikeda, H. Nakashima, M. Nishida, S. Matsumura, T. Daio, M. Doi, H. Miyazaki

    MRS Fall Meeting 2010  2010.12 

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    Event date: 2010.11 - 2010.12

    Language:Others   Presentation type:Symposium, workshop panel (public)  

    Country:United States  

  • Evolution of critical current density and microstructure in MgB2 tapes during an in-situ heat treatment process at 873 K International conference

    S. Hata, T. Ohashi, Y. Shimada, A. Matsumoto, K. Ikeda, H. Nakashima, H. Kitaguchi, H. Kumakura

    ISS2010 (23rd International Symposium on Superconductivity)  2010.11 

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    Event date: 2010.11

    Language:Others  

    Country:Japan  

  • Electron microsocpy observation of MgB2 wire prepared by an internal Mg diffusion method International conference

    Y. Shimada, Y. Kubota, S. Hata, K. Ikeda, H. Nakashima, A. Matsumoto, K.Togano, H. Kumakura

    ISS2010 (23rd International Symposium on Superconductivity)  2010.11 

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    Event date: 2010.11

    Language:Others  

    Country:Japan  

  • TEM-CTの分解能における課題:材料系の立場から

    波多聰, 光原昌寿, 緒方啓丞, 池田賢一, 中島英治, 吉永憲人, 松村晶

    日本鉄鋼協会第160回秋季講演大会 材料の組織と特性部会 階層的3D4D解析に基づく材料信頼性向上フォーラムシンポジウム 3D/4Dイメージングの現状と展望:共通基盤技術の形成に向けて  2010.9 

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    Event date: 2010.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 内部Mg拡散法により作製したMgB2線材の臨界電流特性と微細構造

    嶋田雄介, 久保田雄貴, 波多聰, 池田賢一, 中島英治, 松本明善, 戸叶一正, 許子萬, 熊倉浩明

    日本金属学会2010年秋期(第147回)大会  2010.9 

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    Event date: 2010.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • クリープ変形したNi基超合金中の転位組織の3次元観察

    光原昌寿, 波多聰, 池田賢一, 中島英治, 三浦信祐, 近藤義宏

    日本金属学会2010年秋期(第147回)大会  2010.9 

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    Event date: 2010.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • Development of 3D TEM imaging techniques using diffraction contrast International conference

    S. Hata, M. Mitsuhara, M. Tanaka, K. Kaneko, K. Higashida, K. Ikeda, H. Nakashima, T. Daio, S. Matsumura

    The 17th International Microscopy Congress (IMC17)  2010.9 

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    Event date: 2010.9

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Brazil  

  • TEMトモグラフィーによる金属材料評価 Invited

    波多聰, 光原昌寿, 池田賢一, 中島英治, 松村晶, 宮崎裕也

    第71回応用物理学会学術講演会 シンポジウム「材料分野における量子ビーム応用の進展」  2010.9 

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    Event date: 2010.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:長崎大学、長崎県   Country:Japan  

  • Three-dimensional evaluation of dislocation arrangements using electron tomography in austenitic steel International conference

    M. Mitsuhara, S. Hata, K. Ikeda, H. Nakashima, M. Tanaka, K. Higashida

    31st Riso International Symposium on Materials Science: Challenges in materials science and possibilities in 3D and 4D characterization techniques  2010.9 

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    Event date: 2010.9

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Denmark  

  • Dislocation electron tomography of boundaries in deformed aluminum International conference

    A. Ramar, S. Hata, X. Huang, R. E. Dunin-Borkowski, G. Winther

    31st Riso International Symposium on Materials Science: Challenges in materials science and possibilities in 3D and 4D characterization techniques  2010.9 

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    Event date: 2010.9

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Denmark  

  • Microstructure in high-density MgB2 wires prepared by an internal Mg diffusion method International conference

    Y. Shimada, Y. Kubota, S. Hata, K. Ikeda, H. Nakashima, A. Matsumoto, K. Togano, J. Hur, H. Kumakura

    Applied Superconductivity Conference 2010  2010.8 

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    Event date: 2010.8

    Language:Others   Presentation type:Oral presentation (general)  

    Country:United States  

  • Microstructure in MgB2/Ni alternately-layered superconducting film International conference

    S. Hata, H. Sosiati, Y. Shimada, T. Doi, A. Matsumoto, H. Kitaguchi, K. Ikeda, H. Nakashima

    The 2nd International Symposium on Advanced Microscopy and Theoretical Calculations (AMTC2)  2010.6 

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    Event date: 2010.6

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 電子線トモグラフィーによるNi-Al-Ti合金の2段階相分離初期組織の観察

    緒方啓丞, 光原昌寿, 波多聰, 池田賢一, 中島英治, 松村晶, 土井稔

    日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 共催 平成22年度 合同学術講演大会  2010.6 

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    Event date: 2010.6

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:熊本大学   Country:Japan  

  • マイクロブリッジ構造に加工したMgB2超伝導薄膜の微細組織

    久保田雄貴, 嶋田雄介, 波多聰, 池田賢一, 中島英治, 木須隆暢, 井上昌睦, 土井俊哉

    日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 共催 平成22年度 合同学術講演大会  2010.6 

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    Event date: 2010.6

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:熊本大学   Country:Japan  

  • エネルギーフィルターHVEMによる結晶材料組織の観察

    波多聰, 緒方啓丞, 池田賢一, 中島英治, 大尾岳史, 松村晶

    日本顕微鏡学会第66回学術講演会  2010.5 

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    Event date: 2010.5

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:名古屋国際会議場   Country:Japan  

  • 高傾斜3軸試料ホルダーとその応用

    波多聰, 光原昌寿, 緒方啓丞, 池田賢一, 中島英治, 宮崎裕也

    日本顕微鏡学会第66回学術講演会  2010.5 

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    Event date: 2010.5

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:名古屋国際会議場   Country:Japan  

  • 内部Mg拡散法により作製したMgB2線材の微細組織構造

    嶋田雄介, 久保田雄貴, 波多聰, 池田賢一, 中島英治, 松本明善, 戸叶一正, 許子萬, 熊倉浩明

    2010年度春季低温工学・超電導学会  2010.5 

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    Event date: 2010.5

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:川崎市産業振興会館   Country:Japan  

  • 多結晶MgB2超伝導バルク体の結晶方位分布解析

    嶋田雄介, 大橋徹也, 波多聰, 池田賢一, 中島英治, 望月利彦, 下山淳一

    日本金属学会2010年春期(第146回)大会  2010.3 

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    Event date: 2010.3

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:筑波大学筑波キャンパス   Country:Japan  

  • MgB2超伝導薄膜の臨界電流特性と微細組織制御

    波多聰, 池田賢一, 中島英治, 嶋田雄介, 土井俊哉, 松本明善, 北口仁, 熊倉浩明

    日本金属学会2010年春期(第146回)大会  2010.3 

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    Event date: 2010.3

    Language:Others   Presentation type:Symposium, workshop panel (public)  

    Venue:筑波大学筑波キャンパス   Country:Japan  

  • Tomographic diffraction contrast imaging: applications to crystalline defects and domain structures Invited International conference

    S. Hata, M. Mitsuhara, K. Ogata, Y. Chihara, K. Ikeda, H. Nakashima, M. Nishida

    International Conference on Advances in Electron Microscopy and Related Techniques & XXXI Annual Meeting of EMSI  2010.3 

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    Event date: 2010.3

    Language:Others   Presentation type:Oral presentation (general)  

    Country:India  

  • Scanning transmission electron microscopy imaging at medium magnifications and its combination with three-dimensional imaging techniques for steel research Invited International conference

    S. Hata

    171st Workshop of the Research Laboratory for High Voltage Electron Microscopy  2010.1 

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    Event date: 2010.1

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 結晶内部組織のTEMトモグラフィー観察への取り組み

    波多聰

    日本顕微鏡学会電顕技術開発若手研究部会第1回ワークショップ  2010.1 

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    Event date: 2010.1

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:ファインセラミックスセンター、名古屋   Country:Japan  

  • Microstructural observation of MgB2 superconducting wires by electron microscopy and x-ray computed tomography

    2009.12 

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    Event date: 2009.12

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • MgB2超伝導薄膜の微細組織制御による臨界電流特性の向上

    波多聰, 嶋田雄介, 久保田雄貴, 池田賢一, 中島英治, 土井俊哉, 松本明善, 北口仁, 熊倉浩明

    日本金属学会第2回格子欠陥制御工学研究会  2009.11 

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    Event date: 2009.11

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:海泉閣(宮城県牡鹿郡女川町)   Country:Japan  

  • Premix-PICT拡散法で作製したMgB2バルク体のJc特性と微細組織

    嶋田雄介, 大橋徹也, 波多聰, 池田賢一, 中島英治, 望月利彦, 下山淳一

    2009年度秋季低温工学・超電導学会  2009.11 

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    Event date: 2009.11

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 透過電子顕微鏡による結晶材料組織の3次元トモグラフィー観察 Invited

    波多聰

    平成21年度計測センターシンポジウム  2009.11 

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    Event date: 2009.11

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:東北大学多元物質科学研究所   Country:Japan  

  • Scanning transmission electron microscopy imaging at medium magnifications and its combinatin with three-dimensional imaging techniques for steel research Invited International conference

    S. Hata

    The 2nd International Symposium on Steel Science 2009  2009.10 

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    Event date: 2009.10

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • A new specimen holder for TEM/STEM tomography and its application to crystalline materials Invited International conference

    S. Hata, H. Miyazaki, M. Mitsuhara, M. Tanaka, K. Ikeda, H. Nakashima, K. Higashida, M. Nishida, S.Matsumura

    The Twelfth Frontiers of Electron Microscopy in Materials Science (FEMMS2009)  2009.10 

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    Event date: 2009.9 - 2009.10

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 3D reconstruction of a spherical precipitate by electron tomography International conference

    N. Yoshinaga, K. Kimura, K. Matsuyama, S. Hata, S. Matsumura

    The Twelfth Frontiers of Electron Microscopy in Materials Science (FEMMS2009)  2009.10 

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    Event date: 2009.9 - 2009.10

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Three-dimensional visualization and quantitative analysis of dislocatioin microstructure using electron tomography in an austenitic steel International conference

    M. Mitsuhara, S. Hata, K. Ikeda, H. Nakashia, M. Tanaka, K. Higashida

    The Twelfth Frontiers of Electron Microscopy in Materials Science (FEMMS2009)  2009.10 

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    Event date: 2009.9 - 2009.10

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Japan  

  • PICT拡散法で作製したMgB2超伝導バルク体の微細組織観察

    嶋田雄介, 大橋徹也, 波多聰, 池田賢一, 中島英治, 望月利彦, 下山淳一

    日本金属学会2009年秋期(第145回)大会  2009.9 

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    Event date: 2009.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:京都大学吉田キャンパス   Country:Japan  

  • 透過電子顕微鏡による結晶材料組織の3次元可視化

    波多聰, 光原昌寿, 松尾孟, 富久田晃司, 池田賢一, 西田稔, 中島英治, 田中將己, 東田賢二, 宮崎裕也

    日本金属学会2009年秋期(第145回)大会  2009.9 

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    Event date: 2009.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:京都大学吉田キャンパス   Country:Japan  

  • 電子線トモグラフィーの3次元再構築精度の実験的検討

    松村晶, 吉永憲人, 木村耕輔, 波多聰

    日本金属学会2009年秋期(第145回)大会  2009.9 

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    Event date: 2009.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:京都大学吉田キャンパス   Country:Japan  

  • 電子線トモグラフィーの3次元再構築精度の実験的検討

    松村晶, 吉永憲人, 木村耕輔, 波多聰

    日本金属学会2009年秋期(第145回)大会  2009.9 

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    Event date: 2009.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:京都大学吉田キャンパス   Country:Japan  

  • Electron microscopy observation of oxygen distribution in MgB2 polycrystalline microstructures International conference

    S. Hata, T. Ohashi, H. Sosiati, Y. Shimada, K. Ikeda, H. Nakashima, A. Matsumoto, T. Doi, J. Shimoyama, H. Kitaguchi, H. Kumakura

    2009 Cryogenic Engineering Conference & International Cryogenic Materials Conference  2009.6 

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    Event date: 2009.6 - 2009.7

    Language:Others   Presentation type:Oral presentation (general)  

    Country:United States  

  • 電子顕微鏡~様々な研究分野にまたがる先端機器~ Invited

    波多聰

    九州大学工学部・九州沖縄9高専 連携教育プログラム関連事業 九州大学 特別講義  2021.12 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • Fast 3D imaging of crystal defects using scanning transmission electron microscopy Invited International conference

    S. Hata, H. Saito, I. Cho(Y. Zhao), S. Koike, R. Nakama, N. Konishi, M. Mitsuhara, M. Murayama

    2021 MIRAI 2.0 Materials Science TEG Workshop  2021.12 

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    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Toward 3D visualization of dislocation dynamics under deformation using transmission electron microscopy Invited International conference

    S. Hata

    imeMan Seminar, Organized by Projet de recherche TimeMan, Rheology of Earth Materials, Universite de Lille  2022.2 

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    Language:English   Presentation type:Oral presentation (general)  

    Country:France  

  • 透過型電子顕微鏡によるナノスケールの三次元観察と多結晶組織解析

    波多聰

    九州大学電子顕微鏡民間開放セミナー 材料開発を前進させる「顕微解析拠点の活用」~九州大学の最先端電子顕微鏡設備と技術の利用~  2022.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:横浜   Country:Japan  

  • 伸線パーライト鋼のTEM内その場変形および微細組織観察

    太田匠, 坂本昌, 波多聰

    日本鉄鋼協会2021年春期(第183回)講演大会  2022.3 

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    Venue:オンライン   Country:Japan  

  • Mg-Zn-RE合金のキンク境界における溶質原子濃化領域の三次元観察

    趙一方, 高紅叶, 郭子萌, 江草大佑, 阿部英司, 波多聰

    日本金属学会2021年春期(第168回)講演大会  2022.3 

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    Venue:オンライン   Country:Japan  

  • ADF-STEM observation of {1 1/2 0} type SRO in Ni4Mo Invited International conference

    S. Hata

    DAE-BRNS International Conference on Advances in Materials Science (ADAMS-22)  2022.4 

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    Country:India  

  • Improved 3D materials surface reconstruction method in SEM

    Yiming MA, S. Hata

    2022.6 

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    Country:Japan  

  • Nanoscale crystal orientation analysis of highly textured NdFeAs(O,F) films for high-field magnet application International conference

    Materials Research Meeting 2021  2021.12 

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    Country:Japan  

  • 体心立方晶鉄における収束電子回折パターンの観察条件

    波多聰, 友清芳二

    第50回日本顕微鏡学会九州支部学術講演会  2008.12 

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    Venue:久留米大学旭町キャンパス   Country:Japan  

  • 結晶内部組織の電子線トモグラフィー観察 Invited

    波多聰

    2008年度日本顕微鏡学会生体構造解析分科会研究討論会VIII共催「3次元電子線トモグラフィ法のマテリアルへの展開」研究部会  2009.1 

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    Venue:大分県別府市 別府・亀の井ホテル   Country:Japan  

  • マウス大腿骨における生体アパタイトの電子顕微鏡観察

    波多聰, 谷川昌弘, ハリニ ソシアティ, 池田賢一, 中島英治, 石本卓也, 中野貴由

    日本金属学会2009年春期(第144回)大会  2009.3 

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    Venue:東京工業大学大岡山キャンパス   Country:Japan  

  • プラズマクリーナーによるFIBダメージ層の低減 Invited

    波多聰

    ナノテク産業化基盤技術の有効利用および高度化と融合を目指した研究会2009  2009.3 

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    Venue:ホテルレガロ福岡   Country:Japan  

  • TEMトモグラフィーによる金属材料評価 Invited

    波多聰

    超高圧電子顕微鏡/シンクロトロン放射光が拓くナノワールド 九州大学超高圧電子顕微鏡室・九州シンクロトロン光研究センター合同シンポジウム  2009.3 

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    Venue:九州大学医学部 百年講堂   Country:Japan  

  • 材料評価的手法による生体骨の薄膜試料作製と透過電子顕微鏡観察

    波多聰, 谷川昌弘, 池田賢一, 中島英治, 石本卓也, 中野貴由, 太田啓介, 中村桂一郎, 横山満

    日本顕微鏡学会第65回学術講演会  2009.5 

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    Venue:仙台国際センター   Country:Japan  

  • β-Ti合金におけるω相の電子線トモグラフィーによる3次元解析

    西田稔, 富久田晃司, 光原昌寿, 波多聰, 板倉賢, 中島英治

    日本顕微鏡学会第65回学術講演会  2009.5 

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    Venue:仙台国際センター   Country:Japan  

  • STEMトモグラフィーを用いた鉄鋼材料中の転位組織の定量評価

    光原昌寿, 波多聰, 池田賢一, 中島英治, 田中將己, 東田賢二

    日本顕微鏡学会第65回学術講演会  2009.5 

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    Venue:仙台国際センター   Country:Japan  

  • TEM暗視野トモグラフィーにおける3次元再構成精度に関する研究

    木村耕輔, 吉永憲人, 波多聰, 松村晶

    日本顕微鏡学会第65回学術講演会  2009.5 

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    Venue:仙台国際センター   Country:Japan  

  • in-situ MgB2線材の熱処理過程の組織観察

    波多聰, 大橋徹也, 嶋田雄介, 池田賢一, 中島英治, 松本明善, 北口仁, 熊倉浩明

    第80回2009年度春季低温工学・超電導学会  2009.5 

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    Venue:早稲田大学国際会議場   Country:Japan  

  • MgB2の微細組織観察における最近の知見 Invited

    波多聰

    21年度第1回「MgB2の材料特性向上に関する調査研究会」  2009.5 

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    Venue:早稲田大学国際会議場   Country:Japan  

  • in-situ MgB2線材の熱処理過程の組織観察

    波多聰, 大橋徹也, 嶋田雄介, 池田賢一, 中島英治, 松本明善, 北口仁, 熊倉浩明

    第80回2009年度春季低温工学・超電導学会  2009.5 

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    Venue:仙台国際センター   Country:Japan  

  • 材料評価的手法による生体骨の薄膜試料作製と透過電子顕微鏡観察

    波多聰, 谷川昌弘, 池田賢一, 中島英治, 石本卓也, 中野貴由, 太田啓介, 中村桂一郎, 横山満

    日本顕微鏡学会第65回学術講演会  2009.5 

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    Venue:仙台国際センター   Country:Japan  

  • TEMトモグラフィーの原理と実際:金属材料を中心として Invited

    波多聰

    鉄鋼科学国際シンポジウム(ISSS 2009)第5回研究会  2009.8 

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    Venue:京都大学吉田キャンパス工学部総合校舎   Country:Japan  

  • A framework for stereo reconstruction in scanning electron microscopy

    Y.M. Ma, S. Hata

    2021.11 

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    Country:Japan  

  • Toward 3D visualization of dislocation dynamics by electron tomography Invited International conference

    S. Hata

    GIFT seminar, Organized by Graduate Institute of Ferrous & Energy Materials Technology (GIFT), Pohang University of Science and Technology (POSTECH)  2021.12 

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    Country:Korea, Republic of  

  • Development of high-angle triple-axis specimen holder for electron tomography International conference

    S. Hata and H. Miyazaki

    The 9th Asia-Pacific Microscopy Conference (APMC9) in conjunction with the 39th Annual Meeting of the Korean Society of Microscopy  2008.11 

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    Country:Korea, Republic of  

  • 透過電子顕微鏡法によるCu-Ti基バルク金属ガラスの極微構造解析

    石丸学, 弘津禎彦, 波多聰, 馬朝利, 西山信行, 網谷健児, 井上明久

    日本金属学会  2005.3 

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    Venue:横浜国立大学常盤台キャンパス   Country:Japan  

  • 暗視野TEMトモグラフィーによるNi-Al-Ti合金のγ,γ’析出粒子の観察

    木村耕輔, 波多聰, 友清芳二, 松村晶, 森谷智一, 土井稔

    日本金属学会  2005.3 

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    Venue:横浜国立大学常盤台キャンパス   Country:Japan  

  • プラズマクリーナーによるFIB加工試料のTEM像質改善の試み

    波多聰, ハリニ・ソシアティ, 桑野範之, 板倉賢, 友清芳二, 中野貴由, 馬越佑吉

    日本金属学会  2005.3 

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    Venue:横浜国立大学常盤台キャンパス   Country:Japan  

  • Microstructures of MgB2 Superconducting Films Fabricated by in situ EB and ex situ PLD Techniques

    2005.3 

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    Country:Japan  

  • Effect of nano-SiC doping on microstructure of in situ powder-in-tube MgB2 tape

    2005.3 

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    Country:Japan  

  • A335B鋼の損傷組織(2)−STEMによる観察

    渡辺英雄, 今村武史, 吉田直亮, 波多聰, 鎌田康寛, 高橋正氣

    日本金属学会  2005.3 

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    Venue:横浜国立大学常盤台キャンパス   Country:Japan  

  • リチウム過剰法を用いたLiCoO2ナノ粒子の合成

    川村哲也, 牧寺雅巳, 四宮拓也, 波多聰, 岡田重人, 三浦則雄, 山木準一

    電気化学会  2005.4 

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    Venue:熊本大学工学部   Country:Japan  

  • Three-Dimensional Observation of Ordered and Disordered Precipitates Using Dark-Field TEM Tomography International conference

    Satoshi Hata, Kousuke Kimura, Syo Matsumura, Yoshitsugu Tomokiyo, Tomokazu Moritani and Minoru Doi

    2005.5 

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    Country:United States  

  • Ordering Process and Formation of Anti-Phase Boundary in Long-Period Superstructures of Al-Rich TiAl Single Crystals International conference

    Takayoshi Nakano, Yosuke Nagasawa, Yukichi Umakoshi, Satoshi Hata, Noriyuki Kuwano, Masaru Itakura, Yoshitsugu Tomokiyo

    2005.5 

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    Country:United States  

  • 暗視野TEMトモグラフィーによるNi-Al-Ti合金の規則・不規則ドメイン粒子の観察

    木村耕輔, 波多聰, 友清芳二, 松村晶, 森谷智一, 土井稔

    日本顕微鏡学会  2005.6 

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    Venue:つくば国際会議場(エポカルつくば)、文部科学省研究交流センター   Country:Japan  

  • プラズマクリーナーによるFIB加工試料のダメージ層除去効果

    波多聰, Harini Sosiati, 板倉賢, 友清芳二, 桑野範之, 中野貴由, 馬越佑吉

    日本顕微鏡学会  2005.6 

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    Venue:つくば国際会議場(エポカルつくば)、文部科学省研究交流センター   Country:Japan  

  • Microstructural Study of SiC-doped MgB2/Fe Superconducting Tapes Fabricated by in situ Powder-in-tube Process

    2005.6 

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    Country:Japan  

  • MgB2線材の微細組織と超伝導特性に及ぼすSiCナノ粒子添加効果

    吉留健, ハリニ・ソシアティ, 波多聰, 友清芳二, 桑野範之, 松本明善, 畠山秀夫, 北口仁, 熊倉浩明

    日本金属学会・日本鉄鋼協会  2005.6 

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    Venue:九州大学工学部   Country:Japan  

  • Tomographic Dark-Field TEM Observation of Ordered and Disordered Precipitates in Ni-Al-Ti Alloy International conference

    K. Kimura, S. Hata, S. Matsumura, Y. Tomokiyo, T. Moritani, M. Doi

    Microscopy and Microanalysis Society  2005.8 

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    Country:United States  

  • Electron Tomography of Crystalline Microstructures by Diffraction Contrast Imaging: Application to Ordered Alloys Invited International conference

    S. Hata, K. Kimura, T. Horiuchi, S. Matsumura, Y. Tomokiyo

    Microscopy and Microanalysis Society  2005.8 

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    Country:United States  

  • 旧オーステナイト粒界におけるCuのSTEM-EDXS分析

    波多聰, 友清芳二, 齋藤盛一郎, 今川一成, 土山聡宏, 高木節雄

    日本鉄鋼協会  2005.9 

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    Venue:広島大学東広島キャンパス   Country:Japan  

  • 規則合金の微細組織形性におけるキネティクスの影響−Al-rich TiAl合金の長周期規則化を例にとって−

    波多聰, 中野貴由, 桑野範之, 板倉賢, 友清芳二, 馬越佑吉

    日本金属学会  2005.9 

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    Venue:広島大学東広島キャンパス   Country:Japan  

  • Microstructures of in-situ PIT MgB2 tapes fabricated with a ball-milling technique International conference

    T. Yoshidome, H. Sosiati, S. Hata, N. Kuwano, Y. Tomokiyo, A. Matsumoto, H. Hatakeyama, H. Kitaguchi, H. Kumakura

    2005.10 

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    Country:Japan  

  • TEM tomographic observation of ordered particles in Ni-based ordering alloys Invited International conference

    Yoshitsugu Tomokiyo, Kousuke Kimura, Takao Horiuchi, Satoshi Hata and Syo Matsumura

    2005.10 

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    Country:China  

  • Effect of nano-SiC addition on microstructure and superconducting property of MgB2 Invited International conference

    T. Yoshidome, Y. Tomokiyo, H. Sosiati, S. Hata, N. Kuwano, A. Matsumoto, H. Hatakeyama, H. Kitaguchi, H. Kumakura

    2005.10 

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    Country:China  

  • TEM study of MgB2/(001)α-Al2O3 superconducting film prepared by in situ electron beam evaporation

    日本顕微鏡学会  2005.11 

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    Venue:九州大学医学部百年講堂   Country:Japan  

  • In-situ TEM Investigation of Aluminum Induced Crystallization of Sputtered Amorphous Silicon International conference

    R. Kishore, S. Hata, N. Kuwano, Y. Tomokiyo, H. A. Naseem and W. D. Brown

    2005.12 

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    Country:India  

  • 規則合金の暗視野TEMトモグラフィーのための観察条件の最適化

    波多聰, 木村耕輔, 友清芳二, 松村晶

    日本顕微鏡学会  2005.12 

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    Venue:山口大学医学部   Country:Japan  

  • オーステナイトの粒成長挙動に及ぼす粒界Cu偏析の影響

    今川一成, 中田伸生, 中島孝一, 二村裕一, 土山聡宏, 高木節雄, 波多聰, 友清芳二

    日本鉄鋼協会  2006.3 

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    Venue:早稲田大学大久保キャンパス   Country:Japan  

  • 鋼の引張変形挙動に及ぼすナノCu粒子分散の影響

    土山聡宏, 高木節雄, 波多聰, 友清芳二, 細田孝, 尾上高清, 北浦知之

    日本鉄鋼協会  2006.3 

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    Venue:早稲田大学大久保キャンパス   Country:Japan  

  • 規則合金組織の3次元観察−暗視野TEMトモグラフィーの試み− Invited

    波多聰, 木村耕輔, 松村晶, 友清芳二, 森谷智一, 土井稔

    日本鉄鋼協会  2006.3 

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    Venue:早稲田大学大久保キャンパス   Country:Japan  

  • SiCナノ粒子添加に伴うin situ MgB2線材の微細組織変化のFIB-TEM解析

    波多聰, 吉留健, Harini Sosiati, 友清芳二, 桑野範之, 松本明善, 北口仁, 熊倉浩明

    日本金属学会  2006.3 

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    Venue:早稲田大学大久保キャンパス   Country:Japan  

  • Effect of Ball-milling Treatment on Microstructure of In Situ Powder-in-tube MgB2 Tape

    2006.3 

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    Country:Japan  

  • 規則合金の暗視野TEMトモグラフィーにおける観察条件の検討

    木村耕輔, 波多聰, 友清芳二, 松村晶

    日本金属学会  2006.3 

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    Venue:早稲田大学大久保キャンパス   Country:Japan  

  • 高次規則相中のAPB形成と長周期規則構造の制御

    中野貴由, 馬越佑吉, 波多聰, 板倉賢, 友清芳二, 桑野範之

    日本金属学会  2006.3 

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    Venue:早稲田大学大久保キャンパス   Country:Japan  

  • Transmission Electron Microscopy Analysis often Oxide on an Sn/FeNi42 Solder Material

    2006.3 

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    Country:Japan  

  • Dark-field TEM-tomography to observe 3-D structures in crystals Invited International conference

    S. Hata

    2006.3 

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    Country:Japan  

  • Nanostructure observation in ordering alloys: recent activities using transmission electron microscopy techniques Invited

    S. Hata, I. Sugimoto, K. Kimura, M. Itakura, Y. Tomokiyo, N. Kuwano, S. Matsumura, T. Nakano and Y. Umakoshi

    Electron Microscopy Society of India  2006.4 

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    Country:India  

  • FIB-TEM Analysis of Long-Period Ordering in TiAl Single Crystals with Gradient Compositions International conference

    S. Hata, K. Shiraishi, I. Sugimoto, M. Itakura, N. Kuwano, Y. Tomokiyo, T. Nakano, Y. Umakoshi

    2006.5 

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    Country:Germany  

  • 透過電顕で観察したMgB2微細組織の特徴 Invited

    波多聰, 吉留健, ハリニ ソシアティ, 友清芳二, 桑野範之, 松本明善, 北口仁, 熊倉浩明, 土井俊哉

    低温工学・超電導学会  2006.5 

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    Venue:大阪大学コンベンションセンター   Country:Japan  

  • SiCナノ粒子を添加したMgB2超伝導線材のTEMによる微細構造解析

    吉留健, H. Sosiati, 波多聰, 友清芳二, 桑野範之, 松本明善, 北口仁, 熊倉浩明

    低温工学・超電導学会  2006.5 

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    Venue:大阪大学コンベンションセンター   Country:Japan  

  • Retardation of Austenite Grain Growth by Grain Boundary Segregation of Copper in Low Carbon Steels International conference

    Nobuo Nakada, Kazunari Imakawa, Yuichi Futamura, Satoshi Hata, Toshihiro Tsuchiyama and Setsuo Takaki

    2006.5 

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    Country:Japan  

  • Fe-Cu合金における転位とCu粒子の相互作用の電子顕微鏡観察

    太田恭平, 波多聰, 友清芳二, 中島英治, 池田賢一, 土山聡宏, 高木節雄

    日本金属学会九州支部日本鉄鋼協会九州支部共催平成18年度合同学術講演大会  2006.6 

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    Venue:九州工業大学工学部   Country:Japan  

  • Dark-field TEM Tomography for Crystalline Domain Structures Invited International conference

    Satoshi Hata

    Symposium on New Trends in High Voltage Transmission Electron Microscopy  2006.8 

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    Country:Japan  

  • Effects of SiC doping on microstructures of MgB2/Fe tapes fabricated by an in situ PIT method with annealing at 873 K International conference

    A. Matsumoto, H. Kitaguchi, H. Kumakura, S. Hata, T. Yoshidome, Y. Tomokiyo, H. Sosiati, N. Kuwano

    Applied Superconducting Conference 2006 (ASC 2006)  2006.8 

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    Country:United States  

  • 暗視野TEMトモグラフィーによるNi4Mo規則ドメイン組織の3次元観察

    木村耕輔, 松村晶, 波多聰

    日本金属学会2006年秋期(第139回)大会  2006.9 

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    Venue:新潟大学五十嵐キャンパス(新潟市五十嵐)   Country:Japan  

  • Al-rich TiAl単結晶の長周期規則化に及ぼす一方向拡散の影響

    杉本一等, 波多聰, 板倉賢, 友清芳二, 桑野範之, 中野貴由, 馬越佑吉

    日本金属学会2006年秋期(第139回)大会  2006.9 

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    Venue:新潟大学五十嵐キャンパス(新潟市五十嵐)   Country:Japan  

  • スズめっき上に発生した外圧型ウィスカの微細構造

    桑野範之, ハリニ ソシアティ, 波多聰, 岩根裕一, 大野恭秀

    日本金属学会2006年秋期(第139回)大会  2006.9 

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    Venue:新潟大学五十嵐キャンパス(新潟市五十嵐)   Country:Japan  

  • 暗視野TEMトモグラフィーによる規則ドメイン構造の3次元観察

    波多聰, 木村耕輔, Gao Hong Ye, 松村晶, 友清芳二, 森谷智一, 土井稔

    日本金属学会2006年秋期(第139回)大会  2006.9 

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    Venue:新潟大学五十嵐キャンパス(新潟市五十嵐)   Country:Japan  

  • Tomographic Dark-Field TEM Observation of Ordered Domain Boundaries in Ni4Mo Alloy International conference

    Kosuke Kimura, Satoshi Hata, Yoshitsugu Tomokiyo, Syo Matsumura

    The 16th International Microscopy Congress  2006.9 

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    Country:Japan  

  • Tomographic Dark-Field and Energy-Filtering TEM Observation of Novel γ/γ’ Nanostructures in Ni-Al-Ti Alloy International conference

    2006.9 

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    Venue:Sapporo   Country:Japan  

  • Removing Focused Ion Beam-Induced Damage Layers by Using a Plasma Cleaner International conference

    Satoshi Hata, Harini Sosiati, Noriyuki Kuwano, Masaru Itakura, Yoshitsugu Tomokiyo, Takayoshi Nakano, Yukichi Umakoshi

    The 16th International Microscopy Congress  2006.9 

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    Country:Japan  

  • Nanostructure Characterization of Tin Oxide Layers on Sn-Ag-Cu Solder Balls International conference

    Harini Sosiati, Satoshi Hata, Noriyuki Kuwano, Yuichi Iwane, Yasuhiro Morizono, Yasuhide Ohno

    The 16th International Microscopy Congress  2006.9 

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    Country:Japan  

  • Application of a focused ion beam (FIB) micro-sampling technique to microstructural studies of MgB2 superconducting tapes International conference

    Harini Sosiati, Takeshi Yoshidome, Satoshi Hata, Noriyuki Kuwano, Yoshitsugu Tomokiyo, Akiyoshi Matsumoto, Hideo Hatakeyama, Hitoshi Kitaguchi, Hiroaki Kumakura

    The 16th International Microscopy Congress  2006.9 

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    Country:Japan  

  • Microstructures of bulk MgB2 fabricated by an ex-situ process using hot isostatic processing International conference

    T. Yoshidome, H. Sosiati, S. Hata, N. Kuwano, P. Mikheenko, A. I. Bevan, J. S. Abell

    19th International Symposium on Superconductivity  2006.10 

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    Country:Japan  

  • Homogeneous microstructure formation in in-situ MgB2 tapes by SiC doping International conference

    S. Hata, T. Yoshidome, H. Sosiati, N. Yuzuriha, N. Kuwano, A. Matsumoto, H. Kitaguchi, H. Kumakura

    19th International Symposium on Superconductivity  2006.10 

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    Country:Japan  

  • Time-Evolution of Short-Range and Long-Range Ordering in Ni4Mo Alloys Studied by Advanced Transmission Electron Microscopy and Monte Carlo Simulation Invited International conference

    S. Matsumura, S. Hata, K. Kimura, T. Takahashi and C. Abromeit

    2006 Fall Meeting of the Materials Research Society  2006.11 

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    Country:United States  

  • Variant Selection of h-Al2Ti Superstructure in TiAl Single Crystals with Gradient Compositions International conference

    S. Hata, I. Sugimoto, K. Shiraishi, N. Kuwano, M. Itakura, T. Nakano and Y. Umakoshi

    2006 Fall Meeting of the Materials Research Society  2006.11 

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    Country:United States  

  • Three-dimensional Imaging of Ordering Alloys using DFTEM Tomography International conference

    S. Hata, K. Kimura, G. H. Ye, S. Matsumura, T. Moritani and M. Doi

    2006 Fall Meeting of the Materials Research Society  2006.11 

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    Country:United States  

  • 透過電顕で観察したMgB2微細組織の特徴(その2) Invited

    波多聰

    2006年度秋季低温工学・超電導学会 第2回MgB2における臨界電流特性に関する調査委員会  2006.11 

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    Venue:熊本大学工学部   Country:Japan  

  • MgB2超伝導膜に15nm間隔で挿入したNi極薄層のピンニング効果

    日高佑貴, 土井俊哉, 増田和幸, 福山寛大, 白樂義則, 北口仁, 吉留健, 波多聰, 桑野範之

    2006年度秋季低温工学・超電導学会  2006.11 

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    Venue:熊本大学工学部   Country:Japan  

  • ナノ積層構造によるMgB2薄膜へのピンニングセンターの導入

    北口仁, 熊倉浩明, 土井俊哉, 福山寛大, 増田和幸, 吉留健, 波多聰, 桑野範之

    2006年度秋季低温工学・超電導学会  2006.11 

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    Venue:熊本大学工学部   Country:Japan  

  • チオフェンを添加したin-situ MgB2線材のTEM観察

    杠直哉, 吉留健, 波多聰, 桑野範之, 山田秀之, 内山順仁, 松本明善, 北口仁, 熊倉浩明

    2006年度秋季低温工学・超電導学会  2006.11 

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    Venue:熊本大学工学部   Country:Japan  

  • ナノオーダーNi層を導入したMgB2薄膜の微細組織観察

    波多聰, 吉留健, 桑野範之, 福山寛大, 増田和幸, 土井俊哉, 白樂義則, 松本明善, 北口仁, 熊倉浩明

    2006年度秋季低温工学・超電導学会  2006.11 

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    Venue:熊本大学工学部   Country:Japan  

  • 成膜時に酸素を導入したMgB2薄膜の微細組織

    吉留健, 波多聰, 桑野範之, 松本明善, 北口仁, 熊倉浩明, 福山寛大, 増田和幸, 土井俊哉, 白樂義則

    2006年度秋季低温工学・超電導学会  2006.11 

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    Venue:熊本大学工学部   Country:Japan  

  • Long-period ordering in Al-rich TiAl single crystals with gradient compositions International conference

    I. Sugimoto, S. Hata, M. Itakura, N. Kuwano, T. Nakano and Y. Umakoshi

    The 13th National Symposium on Phase Diagrams, China-Japan Joint Symposium on Phase Diagrams, Materials Design and Their Applications  2006.11 

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    Country:China  

  • Microscopic properties of long-period ordering in Al-Ti alloys Invited International conference

    S. Hata, T. Nakano, N. Kuwano, M. Itakura, S. Matsumura and Y. Umakoshi

    A satellite conference on Materials Behaviour: Far From Equilibrium  2006.12 

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    Country:India  

  • Three-dimensional TEM observation of disordered and ordered precipitates in Ni-Al-Ti alloys

    H. Gao, K. Kimura, S. Hata, S. Matsumura, T. Moritani and M. Doi

    2006.12 

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    Country:Japan  

  • Ⅲ族窒化物結晶に混入した酸素原子が物性値に与える影響

    籾井真介, 木庭大作, 桑野範之, 波多聰

    第48回日本顕微鏡学会九州支部総会・学術講演会  2006.12 

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    Venue:長崎大学医学部   Country:Japan  

  • 電子線トモグラフィーによる結晶材料の3次元組織解析 Invited

    波多聰

    ナノ物質合成・解析支援(第9回)およびナノマテリアル開発のための超顕微解析支援合同講習・研究会  2007.1 

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    Venue:九州大学   Country:Japan  

  • MBE法で作製したInN薄膜における不純物酸素の占有位置のTEMによる解析

    籾井真介, 桑野範之, 波多聰, 吉本昌広

    第54回応用物理学関係連合講演会  2007.3 

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    Venue:青山学院大学(神奈川県相模原市)   Country:Japan  

  • Fe-3mass&#37;Cu合金におけるCu粒子と転位の電子顕微鏡観察

    太田恭平, 波多聰, 池田賢一, 中島英治, 板倉賢, 友清芳二, 土山聡宏, 高木節雄

    日本鉄鋼協会第153回春季講演大会  2007.3 

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    Venue:千葉工業大学津田沼キャンパス   Country:Japan  

  • TEMでみる合金の3次元ドメイン構造

    波多聰

    日本鉄鋼協会第153回春季講演大会 「耐熱鋼および耐熱合金の組織安定性と寿命測定」フォーラム シンポジウム 耐熱鋼・耐熱合金の組織安定性とクリープ変形挙動  2007.3 

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    Venue:千葉工業大学津田沼キャンパス   Country:Japan  

  • 組成傾斜TiAl単結晶におけるAl2Ti長周期規則状態の熱処理条件依存性

    杉本一等, 波多聰, 板倉賢, 桑野範之, 中野貴由, 馬越佑吉

    日本金属学会2007年春期(第140回)大会  2007.3 

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    Venue:千葉工業大学津田沼キャンパス   Country:Japan  

  • Ni-Al-Ti合金におけるγ’相中に析出したγ粒子の3次元形態解析

    木村耕輔, Gao Hong-Ye, 波多聰, 松村晶, 森谷智一, 土井稔

    日本金属学会2007年春期(第140回)大会  2007.3 

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    Venue:千葉工業大学津田沼キャンパス   Country:Japan  

  • FIB-TEMによる生体硬組織の微細組織観察の試み

    波多聰, 板倉賢, 桑野範之, ハリニ ソシアティ, 中野貴由, 馬越佑吉

    日本金属学会2007年春期(第140回)大会  2007.3 

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    Venue:千葉工業大学津田沼キャンパス   Country:Japan  

  • Location of impurity oxygen atoms in InN grown by MBE International conference

    S. Momii, D. Koba, N. Kuwano, S. Hata and M. Yoshimoto

    The 3rd Asia-Pacific Workshop on Widegap Semiconductors (APWS-2007)  2007.3 

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    Country:Korea, Republic of  

  • Nanostructure observation using diffraction-based electron tomography International conference

    Satoshi Hata

    2007 U.S. - Japan Young Researchers Exchange Program in Nanotechnology, Co-sponsored by the U. S. National Science Foundation and the Japan Ministry of Education, Culture, Sports, Science and Technology, Kick-off Symposium  2007.3 

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    Country:United States  

  • Hybrid electron tomography imaging of crystalline nanostructures International conference

    Satoshi Hata

    2007 U.S. - Japan Young Researchers Exchange Program in Nanotechnology, Co-sponsored by the U. S. National Science Foundation and the Japan Ministry of Education, Culture, Sports, Science and Technology, Tohoku University Symposium  2007.5 

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    Country:Japan  

  • TEM暗視野トモグラフィーによる規則相バリアントの3次元組織の観察

    木村耕輔, 松山加苗, 波多聰, 松村晶

    日本顕微鏡学会第63回学術講演会  2007.5 

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    Venue:朱鷺メッセ(新潟コンベンションセンター)   Country:Japan  

  • ラット大腿骨の内軟骨性骨化領域のFIB-TEM観察

    波多聰, ハリニ ソシアティ, 中野貴由, 板倉賢, 桑野範之, 馬越佑吉

    日本顕微鏡学会第63回学術講演会  2007.5 

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    Venue:朱鷺メッセ(新潟コンベンションセンター)   Country:Japan  

  • Fe-Cu合金のCu析出粒子と転位のTEM/STEM観察

    波多聰, 太田恭平, 板倉賢, 友清芳二, 池田賢一, 中島英治, 土山聡宏, 高木節雄

    日本顕微鏡学会第63回学術講演会  2007.5 

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    Venue:朱鷺メッセ(新潟コンベンションセンター)   Country:Japan  

  • 人口ピンとしてナノオーダーNi層を挿入したMgB2薄膜のJc-B特性

    土井俊哉, 福山寛大, 増田和幸, 日高佑貴, 白樂義則, 北口仁, 波多聰, 桑野範之

    2007年度春季低温工学・超電導学会  2007.5 

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    Venue:千葉大学けやき会館(千葉氏稲毛区)   Country:Japan  

  • Ni-Al-Ti合金におけるγ’粒子の相分離の3次元TEM観察

    波多聰, 木村耕輔, Hong-Ye Gao, 松村晶, 土井稔, 森谷智一

    耐熱金属材料第123委員会  2007.7 

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    Venue:東京工業大学   Country:Japan  

  • 高Crフェライト系耐熱鋼の3次元電子線トモグラフィー観察

    光原昌寿, 池田賢一, 波多聰, 中島英治, 岩井隆純

    耐熱金属材料第123委員会  2007.7 

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    Venue:東京工業大学   Country:Japan  

  • 透過電顕を用いた超電導体の組織観察 Invited

    波多聰

    低温工学協会 九州・西日本支部 若手セミナー  2007.9 

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    Venue:北九州国際会議場、福岡県   Country:Japan  

  • Recent topics at the research laboratory for HVEM in Kyushu University Invited International conference

    S. Hata

    EMAT Friday Lecture  2007.9 

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    Country:Belgium  

  • Transmission electron microscopy analysis of C4H4S-doped MgB2 tape International conference

    N. Yuzuriha, H. Sosiati, S. Hata, N. Kuwano, H. Yamada, N. Uchiyama, A. Matsumoto, H. Kitaguchi, H. Kumakura

    8th European Conference on Applied Superconductivity (EUCAS 2007)  2007.9 

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    Country:Belgium  

  • Microstructural changes in MgB2 films with introducing oxygen in a fabrication process using electron beam evaporation International conference

    S. Hata, T. Yoshidome, H. Sosiati, N. Kuwano, K. Fukuyama, K. Masuda, T. Doi, Y. Hakuraku, A. Matsumoto, H. Kitaguchi, H. Kumakura

    8th European Conference on Applied Superconductivity (EUCAS 2007)  2007.9 

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    Country:Belgium  

  • VおよびNb添加高Crフェライト系耐熱鋼の3次元電子線トモグラフィー観察

    光原昌寿, 池田賢一, 波多聰, 中島寛, 若井隆純

    日本鉄鋼協会第154回秋季講演大会  2007.9 

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    Venue:岐阜大学   Country:Japan  

  • Ni-Si-Fe合金中のγ相およびγ’相における相分離挙動

    木村耕輔, 波多聰, 松村晶, 森谷智一, 土井稔

    日本金属学会2007年秋期(第141回)大会  2007.9 

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    Venue:岐阜大学   Country:Japan  

  • 金属間化合物材料のための電子線トモグラフィー技術の開発

    波多聰, 池田賢一, 中島英治, 光原昌寿, 木村耕輔, 松山加苗, Gao Hong-Ye, 松村晶, 土井稔, 宮崎裕也

    日本金属学会2007年秋期(第141回)大会  2007.9 

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    Venue:岐阜大学   Country:Japan  

  • Creep Deformation Behavior of Sn-3.0Ag-0.5Cu Solder at Low Stresses International conference

    K. Fujimoto, M. Ishibashi, K. Ikeda, S. Hata, H. Nakashima

    The 9th Cross Straits Symposium on Materials, Energy and Environmental Sciences  2007.9 

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    Country:Korea, Republic of  

  • Electron Microscopy Observation of Formation of Apatite Crystals in Bone International conference

    M. Tanigawa, S. Hata, S. Harini, K. Ikeda, H. Nakashima, T. Nakano, Y. Umakoshi

    The 9th Cross Straits Symposium on Materials, Energy and Environmental Sciences  2007.9 

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    Country:Korea, Republic of  

  • Alignment procedure of diffraction conditions for tomographic dark-field TEM observation International conference

    S. Hata, K. Kimura, H. Miyazaki, S. Matsumura

    Electron Microscopy and Analysis Group Conference (EMAG 2007)  2007.9 

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    Country:United Kingdom  

  • 内軟骨性骨化領域のアパタイト生成と結晶配向の電子顕微鏡観察

    波多聰, ハリニ ソシアティ, 谷川昌弘, 池田賢一, 中島英治, 中野貴由, 馬越佑吉

    第29回日本バイオマテリアル学会大会  2007.11 

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    Venue:千里ライフサイエンスセンター、大阪府   Country:Japan  

  • 高密度MgB2バルクのTEM観察

    波多聰, 杠直哉, 吉留健, ハリニ ソシアティ, 桑野範之, 山本明保, 下山淳一, 堀井滋, 岸尾光二

    2007年度秋季低温工学・超電導学会  2007.11 

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    Venue:宮城県民会館、仙台市   Country:Japan  

  • Transmission electron microscopy analysis for developing MgB2 superconducting materials International conference

    S. Hata, H. Sosiati, T. Yoshidome, Y. Tomokiyo, N. Kuwano, A. Matsumoto, T. Doi, H. Kitaguchi, H. Kumakura

    Malaysia-Japan International Symposium on Advanced Technology 2007  2007.11 

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    Country:Malaysia  

  • Transmission electron microscopy observation of MgB2 tapes fabricated by in situ processes Invited International conference

    S. Hata, H. Sosiati, T. Yoshidome, N. Yuzuriha, N. Kuwano, H. Yamada, N. Uchiyama, A. Matsumoto, H. Kitaguchi, H. Kumakura

    The 13th Japan-US Workshop on Advanced Superconductors  2007.11 

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    Country:Japan  

  • Fabrication and properties of MgB2/(B or N) multilayer films Invited International conference

    H. Kitaguchi, K. Takahashi, H. Kumakura, T. Doi, K. Fukuyama, K. Masuda, T. Yoshidome, S. Hata and N. Kuwano

    The 13th Japan-US Workshop on Advanced Superconductors  2007.11 

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    Country:Japan  

  • Transmission electron microscopy observation of MgB2 tapes fabricated by in situ processes Invited International conference

    S. Hata, H. Sosiati, T. Yoshidome, N. Yuzuriha, N. Kuwano, H. Yamada, N. Uchiyama, A. Matsumoto, H. Kitaguchi, H. Kumakura

    The 13th Japan-US Workshop on Advanced Superconductors  2007.11 

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    Country:Japan  

  • Three-dimensional shape of γ Particle formed in γ’ phase in a Ni-Al-Ti alloy International conference

    2007.11 

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    Venue:ICC Jeju, Jeju Island   Country:Korea, Republic of  

  • Temperature dependence of long-period ordering in TiAl single crystals with gradient compositions International conference

    I. Sugimoto, S. Hata, M. Itakura, N. Kuwano, T. Nakano, Y. Umakoshi

    The Sixth Pacific Rim International Conference on Advanced Materials and Processing (PRICM6)  2007.11 

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    Country:Korea, Republic of  

  • 田中將己、金子賢治、東田賢二、光原昌寿、波多聰

    田中將己, 金子賢治, 東田賢二, 光原昌寿, 波多聰

    第49回日本顕微鏡学会九州支部学術講演会  2007.12 

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    Venue:九州大学筑紫地区キャンパス   Country:Japan  

  • STEM回折コントラスト法による巨大ひずみ加工組織観察の試み

    波多聰, 池田賢一, 中島英治, 飴山惠, 小田英治

    日本金属学会2008年春期(第142回)大会  2008.3 

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    Venue:武蔵工業大学世田谷キャンパス   Country:Japan  

  • ラット内軟骨性骨化領域のTEM観察

    波多聰, 谷川昌弘, ハリニ ソシアティ, 池田賢一, 中島英治, 中野貴由, 馬越佑吉

    日本金属学会2008年春期(第142回)大会  2008.3 

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    Venue:武蔵工業大学世田谷キャンパス   Country:Japan  

  • 電子ビーム蒸着法で作製したMgB2薄膜の微細組織の組成依存性

    波多聰, ハリニ ソシアティ, 池田賢一, 中島英治, 土井俊哉, 北口仁

    2008年度春季低温工学・超電導学会  2008.5 

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    Venue:明星大学、東京都   Country:Japan  

  • MgB2線材の微細組織に及ぼす炭素系物質添加の影響

    波多聰, 杠直哉, ハリニ ソシアティ, 山田秀之, 五十嵐基仁, 松本明善, 北口仁, 熊倉浩明

    2008年度春季低温工学・超電導学会  2008.5 

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    Venue:明星大学、東京都   Country:Japan  

  • 高密度MgB2バルクの力学特性

    大橋徹也, 杠直哉, 池田賢一, 波多聰, 中島英治, 山本明保, 下山淳一, 堀井滋, 岸尾光二

    2008年度春季低温工学・超電導学会  2008.5 

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    Venue:明星大学、東京都   Country:Japan  

  • ナノプローブ電子顕微鏡技術による鉄鋼材料組織解析の新しい試み

    波多聰, 太田恭平, 光原昌寿, 池田賢一, 中島英治, 友清芳二, 土山聡宏, 高木節雄

    日本金属学会九州支部 日本鉄鋼協会九州支部 共催 平成20年度合同学術講演大会  2008.6 

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    Venue:九州大学   Country:Japan  

  • Transmission Electron Microscopy Analysis of Nanostructured MgB2 Films Fabricated Using an Electron Beam Evaporation Technique Invited International conference

    S. Hata, H. Sosiati, T. Yoshidome, K. Ikeda, H. Nakashima, T. Doi, Y. Tsukano, H. Yamashita, Y. Hidaka, Y. Hakuraku, K. Takahashi, H. Kitaguchi

    International Conference on Electronic Materials 2008 presented by International Union of Materials Research Societies (IUMRS-ICEM 2008)  2008.7 

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    Country:Australia  

  • 3D-TEM法による三次元可視化の現状 Invited

    波多聰

    第一回鉄鋼協会自主フォーラム「粒径・空間・時間分布制御による信頼性向上」  2008.8 

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    Venue:物質・材料研究機構、茨城県   Country:Japan  

  • 材料系研究者による生体骨組織の電子顕微鏡観察への取り組み

    波多聰, 谷川昌弘, ハリニ ソシアティ, 池田賢一, 中島英治, 石本卓也, 中野貴由

    佐賀大学・九州大学合同研究集会「人工関節のバイオメカニクスとバイオマテリアル」  2008.9 

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    Venue:熊本大学   Country:Japan  

  • Al-rich TiAlにおける長周期規則相とその欠陥構造 Invited

    波多聰

    日本金属学会2008年秋期(第143回)大会  2008.9 

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    Venue:熊本大学   Country:Japan  

  • High-angle triple-axis specimen holder designed for tomographic diffraction contrast imaging International conference

    S. Hata, H. Miyazaki, M. Mitsuhara, M. Tanaka, K. Higashida, K. Ikeda and H. Nakashima

    Development of Advanced Instruments for New Electron Microscopy and Diffraction (The International Union of Crystallography 2008 Satellite Meeting)  2008.9 

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    Country:Japan  

  • Three-dimensional imaging of nanostructure in crystals: development of advanced electron tomography for materials science Invited International conference

    S. Hata

    10th Cross Straits Symposium on Materials, Energy and Environmental Sciences  2008.11 

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    Country:Japan  

  • ADF-STEM observation of {1 1/2 0} type SRO in Ni4Mo Invited International conference

    S. Hata

    DAE-BRNS International Conference on Advances in Materials Science (ADAMS-22)  2022.4 

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    Venue:オンライン、DAE Convention Centre, Anushaktinagar | Online, Organized by Materials Group, Bhabha Atomic Research Centre, Trombay, Mumbai, India   Country:India  

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  • 透過型電子顕微鏡によるナノスケールの三次元観察と多結晶組織解析

    波多聰

    九州大学電子顕微鏡民間開放セミナー 材料開発を前進させる「顕微解析拠点の活用」〜九州大学の最先端電子顕微鏡設備と技術の利用〜  2022.3 

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    Language:Japanese  

    Venue:横浜   Country:Japan  

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  • 伸線パーライト鋼のTEM内その場変形および微細組織観察

    太田匠, 坂本昌, 波多聰

    日本鉄鋼協会2021年春期(第183回)講演大会  2022.3 

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    Venue:オンライン   Country:Japan  

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  • Toward 3D visualization of dislocation dynamics under deformation using transmission electron microscopy Invited International conference

    S. Hata

    imeMan Seminar, Organized by Projet de recherche TimeMan, Rheology of Earth Materials, Universite de Lille  2022.2 

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    Venue:オンライン(Universite de Lille, Frane)   Country:France  

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  • Mg-Zn-RE合金のキンク境界における溶質原子濃化領域の三次元観察

    趙一方, 高紅叶, 郭子萌, 江草大佑, 阿部英司, 波多聰

    日本金属学会2021年春期(第168回)講演大会  2022.3 

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    Venue:オンライン   Country:Japan  

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  • Improved 3D materials surface reconstruction method in SEM

    Yiming MA, S. Hata

    2022年度日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 合同学術講演会  2022.6 

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    Venue:オンライン(福岡)   Country:Japan  

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  • In-situ transmission electron microscopy of initial stage of melting and solidification in Al-Si alloy International conference

    @K. Sasaki, @T. Yamayoshi, @T. Nambu, @H. Gao, @S. Hata

    The 20th International Microscopy Congress (IMC20)  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  • In-situ transmission electron microscopy of initial stage of melting and solidification in Al-Si alloy International conference

    K. Sasaki, T. Yamayoshi, T. Nambu, H. Gao, S. Hata

    The 20th International Microscopy Congress (IMC20)  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Busan   Country:Korea, Republic of  

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  • Influence of nanocrystalline microstructure on the thermal conductivity of indium-gallium-zinc-oxide (IGZO) thin films International conference

    @R. Khan, @M. Ohtaki, @R. Hattori, @K. Miyazaki, @S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Enhanced denoising of STEM images with deep learning: development and application of TEM IMAGE PROCESSOR software International conference

    #J. Bo, #Y. Zhao, @H. Gao, @Z. Guo, @S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Enhanced denoising of STEM images with deep learning: development and application of TEM IMAGE PROCESSOR software International conference

    J. Bo, Y. Zhao, H. Gao, Z. Guo, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Influence of nanocrystalline microstructure on the thermal conductivity of indium-gallium-zinc-oxide (IGZO) thin films International conference

    R. Khan, M. Ohtaki, R. Hattori, K. Miyazaki, S. Hata

    IMC20 Satellite Symposium  2023.9 

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    Event date: 2023.9

    Language:English  

    Venue:Fukuoka   Country:Japan  

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  • Novel denoise based on ResNet for STEM observation

    #J. Bo, #Y. Zhao, @H. Gao, #Q. Zhang, @Z. Guo, @S. Hata

    2023.6 

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    Event date: 2023.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Novel denoise based on ResNet for STEM observation

    J. Bo, Y. Zhao, H. Gao, Q. Zhang, Z. Guo, S. Hata

    日本顕微鏡学会第79回学術講演会  2023.6 

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    Event date: 2023.6

    Language:English  

    Venue:島根   Country:Japan  

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  • FIB加工Al-Si合金試料の融解・凝固TEM内その場観察におけるGaの影響

    @佐々木勝寛、@山吉知樹、@南部智憲、@高紅叶、@波多聰

    日本顕微鏡学会第79回学術講演会  2023.6 

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    Event date: 2023.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:島根   Country:Japan  

  • FIB加工Al-Si合金試料の融解・凝固TEM内その場観察におけるGaの影響

    佐々木勝寛, 山吉知樹, 南部智憲, 高紅叶, 波多聰

    日本顕微鏡学会第79回学術講演会  2023.6 

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    Event date: 2023.6

    Language:Japanese  

    Venue:島根   Country:Japan  

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  • 酸化物基板上への(Ba,K)Fe2As2 エピタキシャル薄膜の作製

    秦東益, 飯田和昌, 畑野敬史, 王超, 斉藤光, 波多聰, 内藤方夫, 山本明保

    第68回応用物理学会春季学術講演会  2021.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • 放電プラズマ焼結によるKドープBa122多結晶バルクの低温合成

    德田進之介, 長谷川友大, 藤井陸太, 嶋田雄介, 波多聰, 山本明保

    第68回応用物理学会春季学術講演会  2021.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • Superconducting properties of heavily electron doped NdFeAsO epitaxial thin films International conference

    K. Iida, K. Kondo, M. Chen, T. Hatano, C. Wang, H. Saito, S. Hata, H. Ikuta

    30th Annual Meeting of MRS-J (International Symposium)  2020.12 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 機械学習を活用したKドープBa122多結晶バルクの合成プロセスの検討

    德田進之介, 長谷川友大, 藤井陸太, 岡田雄輝, 石井秋光, 山中晃徳, 嶋田雄介, 波多聰, 山本明保

    第100回低温工学・超伝導学会研究発表会  2020.12 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • Recent progress on the development of K-doped Ba122 bulk superconductors Invited International conference

    Akiyasu Yamamoto, Shinnosuke Tokuta, Yuta Hasegawa, Rikuta Fujii, Yuki Okada, Yusuke Shimada, Hikaru Saito, Satoshi Hata, Akimitsu Ishii, Akinori Yamanaka, Kazumasa Iida

    33rd International Symposium on Superconductivity  2020.12 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Effect of Hydrogen Doping on the Superconducting Properties of NdFeAsO International conference

    33rd International Symposium on Superconductivity  2020.12 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Critical current properties of in situ grown (Ba,K)Fe2As2 epitaxial thin films International conference

    Dongyi Qin, Kazumasa Iida, Chriara Tarantini, Wang Chao, Hikaru Saito, Satoshi Hata, Michio Naito, Akiyasu Yamamoto

    33rd International Symposium on Superconductivity  2020.12 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Synthesis of K-doped Ba122 polycrystalline bulks with high critical current density International conference

    S. Tokuta, Y. Hasegawa, R. Fujii, Y. Shimada, S. Hata, and A. Yamamoto

    33rd International Symposium on Superconductivity  2020.12 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • In-situ growth of (Ba,K)Fe2As2 epitaxial thin films by molecular beam epitaxy International conference

    Dongyi Qin, Kazumasa Iida, Yiming Ma, Hikaru Saito, Satoshi Hata, Michio Naito, Akiyasu Yamamoto

    Applied Superconductivity Conference 2020  2020.10 

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    Event date: 2020.10

    Language:English  

    Country:United States  

  • Highly dense K-doped Ba122 polycrystalline bulks prepared by Spark Plasma Sintering International conference

    S. Tokuta, R. Fujii, Y. Shimada, S. Hata, A. Yamamoto

    Applied Superconductivity Conference 2020  2020.10 

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    Event date: 2020.10

    Language:English  

    Country:United States  

  • NdFeAs(O,F) epitaxial thin films with high critical current density International conference

    Applied Superconductivity Conference 2020  2020.10 

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    Event date: 2020.10

    Language:English  

    Country:United States  

  • Bayesian engineered high critical current density in K doped Ba122 polycrystalline materials International conference

    A. Yamamoto, S.Tokuta, R. Fujii, Y.Okada, Y.Shimada, S.Hata, K.Iida, A. Yamanaka

    Applied Superconductivity Conference 2020  2020.10 

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    Event date: 2020.10

    Language:English  

    Country:United States  

  • KドープBa122エピタキシャル薄膜の臨界電流特性

    秦東益, 飯田和昌, Chiara Tarantini, 王超, 斉藤光, 波多總, 内藤方夫, 山本明保

    第81回応用物理学会秋季学術講演会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • in situ 観察とフェーズフィールド法による固相焼結過程の比較研究

    岡田雄輝, 山中晃徳, 石井秋光, 山本明保, 斉藤光, 波多聰

    第81回応用物理学会秋季学術講演会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web   Country:Japan  

  • Scanning Moire Pattern Analysis for Crystallographic Polarity of AlN

    2020.5 

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    Event date: 2020.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Collaboration between URC-KU and ML-MJIIT

    Siti Rahmah Binti Aid, S. Matsumura, Y. Murakami, K. Kaneko, K. Yasuda, S. Tanaka, S. Hata, N. Kuwano

    2019.12 

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    Event date: 2019.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:China  

  • 電子エネルギー損失分光法による非発光性Blochモード分析

    吉本大地, 木村勇一郎, 斉藤光, 波多聰, 藤吉好史, 倉田博基

    第80回応用物理学会秋季学術講演会  2019.9 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • プラズモン共振器による蛍光増強のSTEM-CL分析

    松崎健太郎, 斉藤光, 波多聰, 三宮工, 渡邊厚介, 稲田幹

    日本顕微鏡学会第75回学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市   Country:Japan  

  • 内殻電子励起によるPt/SiOx界面固相反応

    佐藤和久, 保田英洋, 市川修平, 今村真幸, 高橋和敏, 波多聰, 松村晶, 穴田智史, 李正九, 森博太郎

    日本顕微鏡学会第75回学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市   Country:Japan  

  • STEM-EELSによるプラズモニック結晶のバンド構造解析

    吉本大地, 斉藤光, 波多聰, 藤吉好史, 倉田博基

    日本顕微鏡学会第75回学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市   Country:Japan  

  • ナノスケール材料変形その場TEM観察手法の開発

    波多聰, 斉藤光, 村山光宏, 佐藤和久, 宮崎伸介, 權堂貴志, 宮崎裕也, 川本克巳, 堀井則孝, 古河弘光, 工藤博幸

    日本金属学会2018年秋期講演(第163回)大会  2018.9 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学、宮城県   Country:Japan  

  • STEM-EELSによる三角格子周期プラズモニック結晶のバンド構造解析

    吉本大地, 斉藤光, 波多聰, 藤吉好史, 倉田博基

    第60回日本顕微鏡学会九州支部集会・学術講演会  2018.12 

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    Event date: 2017.9

    Language:Japanese  

    Country:Japan  

  • Change in the microstructure and mechanical properties of drawn pearlitic steel with low-temperature aging

    D. Hirakami, K. Ushioda, T. Manabe, K. Noguchi, K. Takai, Y. Hata, Satoshi Hata, Hideharu Nakashima

    38th Riso International Symposium on Materials Science  2017.8 

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    Event date: 2017.9

    Language:English  

    Country:Denmark  

  • Electron microscopy analysis for crystallographic polarity of AlN with general consideration on appearance of Moire pattern

    Noriyuki Kuwano, Siti Rahmah bt. Aid, Jesbains Kaur, Satoshi Hata and Hikaru Saito

    2018.12 

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    Event date: 2017.9

    Language:Japanese  

    Country:Japan  

  • Electron Microscopy of the Tin-oxide Nanolayer Formed on the Surface of Sn-Ag-Cu Alloys

    H. Sosiati, N. Kuwano, Satoshi Hata

    3rd International Conference on Functional Materials Science 2016, ICFMS 2016  2017.5 

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    Event date: 2016.10

    Language:English  

    Country:Indonesia  

  • 九州大学超顕微解析研究センターの現状

    前野宏志, 安田 和弘, 村上恭和, 波多聰, 松村 晶

    第57回日本顕微鏡学会九州支部総会・学術講演会  2015.11 

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    Event date: 2015.11

    Language:Japanese  

    Venue:九州大学筑紫キャンパス、福岡県   Country:Japan  

  • MgB2バルクの作製プロセスと微細組織

    嶋田雄介, 山本明保, 波多聰

    日本金属学会2015年秋期講演大会(第157回)  2015.9 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学伊都キャンパス、福岡県   Country:Japan  

  • 核融合応用を指向した11B同位体を用いた低放射化MgB2超伝導線材の作製と超伝導特性

    菱沼良光, 菊池章弘, 嶋田雄介, 波多聰, 山田修一, 室賀健夫

    日本金属学会2015年秋期講演大会(第157回)  2015.9 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学伊都キャンパス、福岡県   Country:Japan  

  • Hysteresis and Domain Behaviors Analysis of High Purity Fe-(5, 6) wt&#37; Si Alloys

    Zhe Lei, Takuro Horiuchi, Iwao Sasaki, Chikara Kaido, Horibe Yochi, Satoshi Hata, Toshifumi Ogawa, Hidenori Era

    20th International Conference on Magnetism, ICM 2015  2015.1 

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    Event date: 2015.7

    Language:English  

    Country:Spain  

  • Simulations of TDGL equations for B2 type ordering with two-step phase separation in Fe-Ni-Al alloys

    Ryuichiro Oguma, Syo Matsumura, Minoru Doi, Satoshi Hata, Keisuke Ogata

    International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 

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    Event date: 2015.6 - 2015.7

    Language:English  

    Country:Canada  

  • MgB2バルクの作製方法による微細組織への影響

    嶋田雄介, 波多聰, 山本明保

    低温工学・超伝導学会 材料研究会主催 MgB2関連フォーラム実行委員会共催 第1回材料研究会シンポジウム 第3回液体水素冷却MgB2超電導線の開発と応用に関するフォーラム  2015.6 

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    Event date: 2015.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学山上会館   Country:Japan  

  • SEM電子線チャネリングコントラスト法による転位組織の定量評価

    山﨑重人, 光原昌寿, 波多聰, 中島英治

    日本顕微鏡学会第71回学術講演会  2015.5 

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    Event date: 2015.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:国立京都国際会館   Country:Japan  

  • Mg-Zn-Y系合金の薄片4点曲げ試験によるキンク変形の評価

    西尾理恵, 中島英治, 波多聰, 池田賢一, 高紅叶

    日本金属学会第156回春期講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学駒場キャンパス   Country:Japan  

  • Ni基合金Alloy617のクリープ変形における組織変化の局所性

    綱分拓海, 中島英治, 波多聰

    日本金属学会第156回春期講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学駒場キャンパス   Country:Japan  

  • 耐熱合金中の転位組織のSEM電子線チャネリングコントラスト観察

    山﨑重人, 光原昌寿, 波多聰, 中島英治

    平成26年度3月期 耐熱金属材料第123委員会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学駒場キャンパス   Country:Japan  

  • Al-Mg-Mn合金の組織と機械的性質に及ぼすScとZr添加の効果

    池下純葉, 金子賢治, 山田和広, 池田賢一, 波多聰

    第56回日本顕微鏡学会 九州支部総会・学術講演会  2014.12 

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    Event date: 2014.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:宮崎市民プラザ   Country:Japan  

  • SEM-EBSD法を用いた多結晶ニッケル基耐熱合金のクリープ損傷定量評価

    山﨑重人, 光原昌寿, 池田賢一, 波多聰, 中島英治

    第56回日本顕微鏡学会 九州支部総会・学術講演会  2014.12 

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    Event date: 2014.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:宮崎市民プラザ   Country:Japan  

  • Al-Mg-Si系合金の長時間時効析出挙動

    池田賢一, 秋吉竜太郎, 波多聰, 中島英治, 金子賢治, 菊池正夫, 高田健, 潮田浩作

    軽金属学会 第127回秋期大会  2014.11 

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    Event date: 2014.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学 大岡山キャンパス   Country:Japan  

  • Three-dimensional analysis of kink bands in LPSO phase by using FIB-SEM International conference

    Ken-ichi Ikeda, Rie Nishio, Hongye Gao, Satoshi Hata, Hideharu Nakashima

    International Symposium on Long-Period Stacking Ordered Structure and Its Related Materials 2014 (LPSO2014)  2014.10 

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    Event date: 2014.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • DP鋼の引張変形挙動に及ぼす塑性加工の影響

    池田賢一, 波多聰, 中島英治, 首藤洋志, 横井龍雄

    日本金属学会 2014年秋期講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学東山キャンパス   Country:Japan  

  • Zn-Al系合金の高温変形挙動と組織の関係

    池田賢一, 小森匡喬, 波多聰, 中島英治

    日本金属学会 高温強度と組織形成の材料科学研究会「平成26年度夏の学校」  2014.8 

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    Event date: 2014.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北見工業大学屈斜路研修所   Country:Japan  

  • 高Crフェライト系耐熱鋼の微細組織変化がクリープ変形挙動に及ぼす影響

    山﨑重人, 光原昌寿, 池田賢一, 波多聰, 中島英治

    日本金属学会 高温強度と組織形成の材料科学研究会「平成26年度夏の学校」  2014.8 

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    Event date: 2014.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北見工業大学屈斜路研修所   Country:Japan  

  • 固溶強化型チタン合金の力学特性に及ぼす添加元素の効果

    池田賢一, 赤田匠, 波多聰, 中島英治, 國枝知徳, 藤井秀樹

    日本機械学会 M&M2014 材料力学カンファレンス  2014.7 

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    Event date: 2014.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福島大学 金谷川キャンパス   Country:Japan  

  • 高温における接合用Sn-Cu系合金の微細組織その場観察

    中田啓亮, 池田賢一, 波多聰, 中島英治

    日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 共催 平成26年度 合同学術講演大会  2014.6 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学伊都キャンパス   Country:Japan  

  • フェライト系耐熱鋼のXAFSによる化学状態評価

    古谷ゆう子, 西堀麻衣子, 山﨑重人, 池田賢一, 波多聰, 中島英治

    日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 共催 平成26年度 合同学術講演大会  2014.6 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学伊都キャンパス   Country:Japan  

  • α-Tiの力学特性に及ぼす添加元素(Al,Cu)濃度の影響

    大野俊樹, 赤田匠, 池田賢一, 波多聰, 中島英治, 國枝知徳, 藤井秀樹

    日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 共催 平成26年度 合同学術講演大会  2014.6 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学伊都キャンパス   Country:Japan  

  • 亜共晶組成を有するZn-Al系合金の力学特性

    小森匡喬, 池田賢一, 波多聰, 中島英治

    日本金属学会2014年春期講演大会  2014.3 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 純ニッケルの極低ひずみ速度クリープの変形機構の解明

    小池幸司, 山﨑重人, 池田賢一, 波多聰, 中島英治

    日本金属学会2013年秋期講演大会(第153回)  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢   Country:Japan  

  • Effect of boron particle size on microstructure and superconducting properties of in-situ Cu addition MgB2 multifilamentary wire

    Y. Hishinuma, A. Kikuchi, Y. Shimada, Satoshi Hata, T. Takeuchi, S. Yamada, A. Sagara

    11th European Conference on Applied Superconductivity, EUCAS 2013  2014.1 

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    Event date: 2013.9

    Language:English  

    Country:Italy  

  • Fe-Al-Ni合金における二段階相分離過程へのTDGLモデルの適用

    小隈龍一郎, 松村晶, 江口鐵男, 土井稔, 波多聰, 緒方啓丞

    日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 共催 平成25年度 合同学術講演大会  2013.6 

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    Event date: 2013.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Ni基合金Alloy617のクリープ破壊形態に及ぼす析出物の影響

    小池幸司, 山崎重人, 光原昌寿, 池田賢一, 波多聰, 中島英治

    日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部 共催 平成25年度 合同学術講演大会  2013.6 

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    Event date: 2013.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Simulations of structure formation in B2 type ordering with two step phase separation in Fe-Ni-Al alloys

    Ryuichiro Oguma, Syo Matsumura, Minoru Doi, Satoshi Hata, Keisuke Ogata

    4th International Symposium on Slow Dynamics in Complex Systems: Keep Going Tohoku  2013.3 

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    Event date: 2012.12

    Language:English  

    Country:Japan  

  • Simulations of structure formation in B2 type ordering with two step phase separation in Fe-Ni-Al alloys

    Ryuichiro Oguma, Syo Matsumura, Minoru Doi, Satoshi Hata, Keisuke Ogata

    4th International Symposium on Slow Dynamics in Complex Systems: Keep Going Tohoku 

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    Event date: 2012.12

    Language:English  

    Country:Japan  

  • Simulations of structure formation in B2 type ordering with two step phase separation in Fe-Ni-Al alloys

    Ryuichiro Oguma, Syo Matsumura, Minoru Doi, Satoshi Hata, Keisuke Ogata

    4th International Symposium on Slow Dynamics in Complex Systems: Keep Going Tohoku 

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    Event date: 2012.12

    Language:English  

    Country:Japan  

  • Creep behavior at ultra-low strain rate in 9&#37; Cr steel studied by helical spring creep test International conference

    S. Yamasaki, M. Mitsuhara, K. Ikeda, S. Hata, H. Nakashima

    New Methods of Damge and Failure Analysis of Structural Parts  2012.9 

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    Event date: 2012.9

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Czech Republic  

  • Application of TDGL model to B2 type ordering with two step phase separation in Fe-Ni-Al alloys

    Ryuichiro Oguma, Syo Matsumura, Minoru Doi, Satoshi Hata, Keisuke Ogata

    21st International Materials Research Congress, IMRC 2012  2013.1 

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    Event date: 2012.8

    Language:English  

    Country:Mexico  

  • A new deformation region and how low do you go? - "intrinsic deformation limit"

    Junjie Shen, Kenichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Chinese Materials Congress 2012, CMC 2012 

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    Event date: 2012.7

    Language:English  

    Country:China  

  • A new deformation region and how low do you go? - "intrinsic deformation limit"

    Junjie Shen, Kenichi Ikeda, Satoshi Hata, Hideharu Nakashima

    Chinese Materials Congress 2012, CMC 2012