Updated on 2024/07/28

Information

 

写真a

 
AKAMATSU HIROFUMI
 
Organization
Faculty of Engineering Department of Applied Chemistry Associate Professor
Faculty of Engineering Research Center for Environmental Engineering(Joint Appointment)
School of Engineering (Joint Appointment)
Graduate School of Engineering (Joint Appointment)
Graduate School of Integrated Frontier Sciences Department of Automotive Science(Joint Appointment)
Title
Associate Professor
Contact information
メールアドレス
Tel
0928022860
Profile
工学、特に無機固体化学に関連する教育・研究、および、学科・専攻の運営に携わる。 具体的には、基幹教育として無機物質化学に関する講義、学部教育として無機固体化学に関する講義、国際コースで英語による無機化学の講義、また大学院教育としてセラミックス工学に関する講義を行う。 また、無機電子材料、具体的には酸化物強誘電体・磁性体・電子伝導材料等に関する実験・理論的研究活動、学会・学術誌での研究成果報告などを通じて、学部・大学院生の教育を行う。
Homepage
External link

Degree

  • Doctor in Engineering

Research History

  • Tokyo Institute of Technology

Research Interests・Research Keywords

  • Research theme:Exploration of novel materials related to ferroelectrics by experimental, theoretical, and data science approaches

    Keyword:Ferroelectrics, First-principles calculations, Materials informatics

    Research period: 2017.4 - 2018.6

Awards

  • 2022年度フロンティア材料研究所学術賞

    2023.4   東京工業大学フロンティア材料研究所   理論・実験的手法の融合に基づいた新規層状ペロブスカイト酸化物圧電・強誘電体の開拓

Papers

  • NaMCl6 (M = Nb and Ta): A New Class of Sodium-Conducting Halide-Based Solid Electrolytes

    Zheng Huang, Suguru Yoshida, Hirofumi Akamatsu, Katsuro Hayashi, Saneyuki Ohno

    ACS Materials Letters   2024.4

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

    DOI: 10.1021/acsmaterialslett.4c00315

  • La2SrSc2O7: A-Site Cation Disorder Induces Ferroelectricity in Ruddlesden–Popper Layered Perovskite Oxide

    2024.2

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

    DOI: 10.1021/jacs.3c11546

  • Glass-ceramic route to NASICON-type Na Ti2(PO4)3 electrodes for Na-ion batteries Reviewed International journal

    Shufan Jia, Hirofumi Akamatsu, George Hasegawa, Saneyuki Ohno, Katsuro Hayashi

    Ceramics International   48 ( 17 )   24758 - 24764   2023.11

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

    DOI: 10.1016/j.ceramint.2022.05.125

  • Hydrogarnet-Derived Porous Polyhedral Particles of SrFeO3-δ Perovskite

    35 ( 16 )   6423 - 6436   2023.8

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

    DOI: 10.1021/acs.chemmater.3c01150

  • Topochemical Synthesis of LiCoF3 with a High-Temperature LiNbO3-Type Structure

    Yumi Matsuo, Yuko Matsukawa, Masahiro Kitakado, George Hasegawa, Suguru Yoshida, Ryoto Kubonaka, Yuya Yoshida, Tatsushi Kawasaki, Eiichi Kobayashi, Chikako Moriyoshi, Saneyuki Ohno, Koji Fujita, Katsuro Hayashi, Hirofumi Akamatsu

    Inorganic Chemistry   61 ( 30 )   11746 - 11756   2022.8

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

    DOI: 10.1021/acs.inorgchem.2c01439

    Repository Public URL: https://hdl.handle.net/2324/7174406

  • Interplay between Oxygen Octahedral Rotation and Deformation in the Acentric ARTiO4 Series toward Negative Thermal Expansion

    Suguru Yoshida, Hirofumi Akamatsu, Alexandra S. Gibbs, Shogo Kawaguchi, Venkatraman Gopalan, Katsuhisa Tanaka, Koji Fujita

    Chemistry of Materials   2022.7

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

    DOI: 10.1021/acs.chemmater.2c01245

  • Controlling Defects to Achieve Reproducibly High Ionic Conductivity in Na 3 SbS 4 Solid Electrolytes Reviewed International journal

    Masaki Shimoda, Mayu Maegawa, Suguru Yoshida, Hirofumi Akamatsu, Katsuro Hayashi, Prashun Gorai, Saneyuki Ohno

    Chemistry of Materials   34   5634 - 5643   2022.6

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

    DOI: 10.1021/acs.chemmater.2c00944

  • Glass-ceramic route to NASICON-type Na Ti2(PO4)3 electrodes for Na-ion batteries

    Shufan Jia, Hirofumi Akamatsu, George Hasegawa, Saneyuki Ohno, Katsuro Hayashi

    Ceramics International   2022.5

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

    DOI: 10.1016/j.ceramint.2022.05.125

  • Synthesis of Hydride-Doped Perovskite Stannate with Visible Light Absorption Capability Reviewed International journal

    Masashi Nakamura, Hirofumi Akamatsu, Kotaro Fujii, Yusuke Nambu, Yoichi Ikeda, Tomoki Kanazawa, Shunsuke Nozawa, Masatomo Yashima, Katsuro Hayashi, Kazuhiko Maeda

    Inorganic Chemistry   61   6584 - 6593   2022.4

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

    DOI: 10.1021/acs.inorgchem.2c00398

  • Environmental impact of amino acids on selenate-bearing hydrocalumite: Experimental and DFT studies

    Hirofumi Akamatsu, Mengmeng Wang, Hirofumi Akamatsu, Ismaila Dabo, Keiko Sasaki

    Environmental Pollution   288   117687 - 117687   2021.11

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

    DOI: 10.1016/j.envpol.2021.117687

  • Electronic Origin of Non-Zone-Center Phonon Condensation: Octahedral Rotation as a Case Study

    Suguru Yoshida, Hirofumi Akamatsu, Katsuro Hayashi

    Physical Review Letters   127 ( 21 )   2021.11

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

    DOI: 10.1103/physrevlett.127.215701

  • Influence of Amino Acids on the Mobility of Iodide in Hydrocalumite

    Hirofumi Akamatsu, Mengmeng Wang, Hirofumi Akamatsu, Keiko Sasaki

    Minerals   11 ( 8 )   836 - 836   2021.8

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

    DOI: 10.3390/min11080836

  • Sn-Based Perovskite with a Wide Visible-Light Absorption Band Assisted by Hydride Doping

    Masashi Nakamura, Hiroshi Watanabe, Hirofumi Akamatsu, Kotaro Fujii, Masatomo Yashima, George Hasegawa, Miki Inada, Katsuro Hayashi, Kazuhiko Maeda

    CHEMISTRY OF MATERIALS   33 ( 10 )   3631 - 3638   2021.5

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

    DOI: 10.1021/acs.chemmater.1c00460

  • Environmental impact of amino acids on the release of selenate immobilized in hydrotalcite: Integrated interpretation of experimental and density-functional theory study Reviewed International journal

    #Mengmeng Wang, @Hirofumi Akamatsu, @Ismaila Dabo, @Keiko Sasaki

    Chemosphere   274   129927-1 - 129927-9   2021.1

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

    DOI: 10.1016/j.chemosphere.2021.129927

  • Ferroelectricity of Dion-Jacobsen layered perovskites CsNdNb(2)O(7)and RbNdNb2O7 Reviewed

    Sota Asaki, Hirofumi Akamatsu, George Hasegawa, Tomohiro Abe, Yuki Nakahira, Suguru Yoshida, Chikako Moriyoshi, Katsuro Hayashi

    JAPANESE JOURNAL OF APPLIED PHYSICS   59 ( SP )   2020.11

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

    DOI: 10.35848/1347-4065/abad46

    Repository Public URL: https://hdl.handle.net/2324/7177939

  • Antiferroelectricity and robust dielectric response owing to competing polar and antipolar instabilities in tetragonal tungsten bronze K2RNb5O15 (R: rare-earth) Reviewed International journal

    @Tomoki Murata, @Hirofumi Akamatsu, @Daisuke Hirai, @Fumiyasu Oba, @Sakyo Hirose

    PHYSICAL REVIEW MATERIALS   4 ( 10 )   2020.10

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

    DOI: 10.1103/PhysRevMaterials.4.104419

  • Variation of meso- and macroporous morphologies in resorcinol-formaldehyde (RF) gels tailored via a sol-gel process combined with soft-templating and phase separation Reviewed

    George Hasegawa, Takaya Yano, Hirofumi Akamatsu, Katsuro Hayashi, Kazuki Nakanishi

    JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY   95 ( 3 )   801 - 812   2020.9

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

    DOI: 10.1007/s10971-020-05236-9

  • Reversible Electrochemical Insertion/Extraction of Magnesium Ion into/from Robust NASICON-Type Crystal Lattice in a Mg(BF4)(2)-Based Electrolyte Reviewed International journal

    @George Hasegawa, #Yuto Akiyama, #Moeko Tanaka, @Ryo Ishikawa, @Hirofumi Akamatsu, @Yuichi Ikuhara, @Katsuro Hayashi

    ACS APPLIED ENERGY MATERIALS   3 ( 7 )   6824 - 6833   2020.7

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

    DOI: 10.1021/acsaem.0c00943

  • Comprehensive magnetic phase diagrams of the polar metal Ca-3(Ru0.95Fe0.05)(2)O-7 Reviewed

    Shiming Lei, Shalinee Chikara, Danilo Puggioni, Jin Peng, Mengze Zhu, Mingqiang Gu, Weiwei Zhao, Yu Wang, Yakun Yuan, Hirofumi Akamatsu, Moses H. W. Chan, Xianglin Ke, Zhiqiang Mao, James M. Rondinelli, Marcelo Jaime, John Singleton, Franziska Weickert, Vivien S. Zapf, Venkatraman Gopalan

    PHYSICAL REVIEW B   99 ( 22 )   2019.6

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

    DOI: 10.1103/PhysRevB.99.224411

  • Competing Polar and Antipolar Structures in the Ruddlesden-Popper Layered Perovskite Li2SrNb2O7 Reviewed

    Ritesh Uppuluri, Hirofumi Akamatsu, Arnab Sen Gupta, Huaiyu Wang, Craig M. Brown, Kleyser E. Agueda Lopez, Nasim Alem, Venkatraman Gopalan, Thomas E. Mallouk

    Chemistry of Materials   31 ( 12 )   4418 - 4425   2019.6

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

    DOI: 10.1021/acs.chemmater.9b00786

  • A-site cation size effect on oxygen octahedral rotations in acentric Ruddlesden-Popper alkali rare-earth titanates Reviewed

    Hirofumi Akamatsu, Koji Fujita, Toshihiro Kuge, Arnab Sen Gupta, James M. Rondinelli, Isao Tanaka, Katsuhisa Tanaka, Venkatraman Gopalan

    PHYSICAL REVIEW MATERIALS   3 ( 6 )   2019.6

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

    DOI: 10.1103/PhysRevMaterials.3.065001

  • A highly conductive Na3V2(PO4)(3) ceramic sheet prepared by tape-casting method Reviewed

    He Wang, George Hasegawa, Yuto Akiyama, Takahisa Yamamoto, Atsushi Inoishi, Hirofumi Akamatsu, Miki Inada, Tatsumi Ishihara, Katsuro Hayashi

    ELECTROCHIMICA ACTA   305   197 - 203   2019.5

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

    DOI: 10.1016/j.electacta.2019.03.057

  • Insights into Sodium Ion Transfer at the Na/NASICON Interface Improved by Uniaxial Compression Reviewed

    Yasuhiro Uchida, George Hasegawa, Kazunari Shima, Miki Inada, Naoya Enomoto, Hirofumi Akamatsu, Katsuro Hayashi

    ACS APPLIED ENERGY MATERIALS   2 ( 4 )   2913 - 2920   2019.4

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

    DOI: 10.1021/acsaem.9b00250

  • Emergent room temperature polar phase in CaTiO3 nanoparticles and single crystals Reviewed

    Mariola O. Ramirez, Tom T. A. Lummen, Irene Carrasco, Eftihia Barnes, Ulrich Aschauer, Dagmara Stefanska, Arnab Sen Gupta, Carmen de las Heras, Hirofumi Akamatsu, Martin Holt, Pablo Molina, Andrew Barnes, Ryan C. Haislmaier, Przemyslaw J. Deren, Carlos Prieto, Luisa E. Bausa, Nicola A. Spaldin, Venkatraman Gopalan

    APL MATERIALS   7 ( 1 )   2019.1

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

    DOI: 10.1063/1.5078706

  • Sodium titanium oxide bronze nanoparticles synthesized via concurrent reduction and Na+-doping into TiO2(B) Reviewed

    George Hasegawa, Moeko Tanaka, Junie Jhon M. Vequizo, Akira Yamakata, Hajime Hojo, Makoto Kobayashi, Masato Kakihana, Miki Inada, Hirofumi Akamatsu, Katsuro Hayashi

    NANOSCALE   11 ( 3 )   1442 - 1450   2019.1

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

    DOI: 10.1039/c8nr08372j

  • Structural dynamics of LaVO3 on the nanosecond time scale Reviewed

    Matthew Brahlek, Vladimir A. Stoica, Jason Lapano, Lei Zhang, Hirofumi Akamatsu, I-Cheng Tung, Venkatraman Gopalan, Donald A. Walko, Haidan Wen, John W. Freeland, Roman Engel-Herbert

    STRUCTURAL DYNAMICS-US   6 ( 1 )   2019.1

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

    DOI: 10.1063/1.5045704

  • Strain-engineered Peierls instability in layered perovskite La3Ni2O7 from first principles Reviewed

    Yasuhide Mochizuki, Hirofumi Akamatsu, Yu Kumagai, Fumiyasu Oba

    PHYSICAL REVIEW MATERIALS   2 ( 12 )   2018.12

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

    DOI: 10.1103/PhysRevMaterials.2.125001

  • Polar metallic behavior of strained antiperovskites ACNi(3) (A = Mg, Zn, and Cd) from first principles Reviewed

    Yasuhide Mochizuki, Yu Kumagai, Hirofumi Akamatsu, Fumiyasu Oba

    PHYSICAL REVIEW MATERIALS   2 ( 12 )   2018.12

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

    DOI: 10.1103/PhysRevMaterials.2.125004

  • Hybrid Improper Ferroelectricity in (Sr,Ca)(3)Sn2O7 and Beyond: Universal Relationship between Ferroelectric Transition Temperature and Tolerance Factor in n=2 Ruddlesden-Popper Phases Reviewed

    Suguru Yoshida, Hirofumi Akamatsu, Ryosuke Tsuji, Olivier Hernandez, Haricharan Padmanabhan, Arnab Sen Gupta, Alexandra S. Gibbs, Ko Mibu, Shunsuke Murai, James M. Rondinelli, Venkatraman Gopalan, Katsuhisa Tanaka, Koji Fujita

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   140 ( 46 )   15690 - 15700   2018.11

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

    DOI: 10.1021/jacs.8b07998

  • Discovering minimum energy pathways via distortion symmetry groups Reviewed

    Jason M. Munro, Hirofumi Akamatsu, Haricharan Padmanabhan, Vincent S. Liu, Yin Shi, Long-Qing Chen, Brian K. VanLeeuwen, Ismaila Dabo, Venkatraman Gopalan

    PHYSICAL REVIEW B   98 ( 8 )   2018.8

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

    DOI: 10.1103/PhysRevB.98.085107

  • Ferroelectric Sr3Zr2O7: Competition between Hybrid Improper Ferroelectric and Antiferroelectric Mechanisms Reviewed

    Suguru Yoshida, Koji Fujita, Hirofumi Akamatsu, Olivier Hernandez, Arnab Sen Gupta, Forrest G. Brown, Haricharan Padmanabhan, Alexandra S. Gibbs, Toshihiro Kuge, Ryosuke Tsuji, Shunsuke Murai, James M. Rondinelli, Venkatraman Gopalan, Katsuhisa Tanaka

    ADVANCED FUNCTIONAL MATERIALS   28 ( 30 )   2018.7

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

    DOI: 10.1002/adfm.201801856

    Other Link: http://doi.wiley.com/10.1002/adfm.201801856

  • Artificial two-dimensional polar metal at room temperature Reviewed

    Yanwei Cao, Zhen Wang, Se Young Park, Yakun Yuan, Xiaoran Liu, Sergey M. Nikitin, Hirofumi Akamatsu, M. Kareev, S. Middey, D. Meyers, P. Thompson, P. J. Ryan, Padraic Shafer, A. N'Diaye, E. Arenholz, Venkatraman Gopalan, Yimei Zhu, Karin M. Rabe, J. Chakhalian

    NATURE COMMUNICATIONS   9   2018.4

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

    DOI: 10.1038/s41467-018-03964-9

  • Light-Activated Gigahertz Ferroelectric Domain Dynamics Reviewed

    Hirofumi Akamatsu, Yakun Yuan, Vladimir A. Stoica, Greg Stone, Tiannan Yang, Zijian Hong, Shiming Lei, Yi Zhu, Ryan C. Haislmaier, John W. Freeland, Long-Qing Chen, Haidan Wen, Venkatraman Gopalan

    PHYSICAL REVIEW LETTERS   120 ( 9 )   2018.2

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

    DOI: 10.1103/PhysRevLett.120.096101

  • Random anion distribution in MS x Se 2-x (M = Mo, W) crystals and nanosheets Reviewed

    Minh An T. Nguyen, Arnab Sen Gupta, Jacob Shevrin, Hirofumi Akamatsu, Pengtao Xu, Zhong Lin, Ke Wang, Jun Zhu, Venkatraman Gopalan, Mauricio Terrones, Thomas E. Mallouk

    RSC Advances   8 ( 18 )   9871 - 9878   2018.1

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

    DOI: 10.1039/c8ra01497c

  • Perovskite-Type InCoO3 with Low-Spin Co3+: Effect of In-O Covalency on Structural Stabilization in Comparison with Rare-Earth Series Reviewed

    Koji Fujita, Takahiro Kawamoto, Ikuya Yamada, Olivier Hernandez, Hirofumi Akamatsu, Yu Kumagai, Fumiyasu Oba, Pascal Manuel, Ryo Fujikawa, Suguru Yoshida, Masayuki Fukuda, Katsuhisa Tanaka

    INORGANIC CHEMISTRY   56 ( 18 )   11113 - 11122   2017.9

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

    DOI: 10.1021/acs.inorgchem.7b01426

  • Carrier-Induced Band-Gap Variation and Point Defects in Zn3N2 from First Principles Reviewed

    Yu Kumagai, Kou Harada, Hirofumi Akamatsu, Kosuke Matsuzaki, Fumiyasu Oba

    PHYSICAL REVIEW APPLIED   8 ( 1 )   014015   2017.7

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

    DOI: 10.1103/PhysRevApplied.8.014015

  • Competing Structural Instabilities in the Ruddlesden Popper Derivatives HRTiO4 (R = Rare Earths): Oxygen Octahedral Rotations Inducing Noncentrosymmetricity and Layer Sliding Retaining Centrosymmetricity Reviewed

    Arnab Sen Gupta, Hirofumi Akamatsu, Forrest G. Brown, Minh An T. Nguyen, Megan E. Strayer, Saul Lapidus, Suguru Yoshida, Koji Fujita, Katsuhisa Tanaka, Isao Tanaka, Thomas E. Mallouk, Venkatrarnan Gopalan

    CHEMISTRY OF MATERIALS   29 ( 2 )   656 - 665   2017.1

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

    DOI: 10.1021/acs.chemmater.6b04103

  • LiNbO3-Type InFeO3: Room-Temperature Polar Magnet without Second-Order Jahn-Teller Active Ions Reviewed

    Koji Fujita, Takahiro Kawamoto, Ikuya Yamada, Olivier Hernandez, Naoaki Hayashi, Hirofumi Akamatsu, William Lafargue-Dit-Hauret, Xavier Rocquefelte, Masafumi Fukuzumi, Pascal Manuel, Andrew J. Studer, Christopher S. Knee, Katsuhisa Tanaka

    CHEMISTRY OF MATERIALS   28 ( 18 )   6644 - 6655   2016.9

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

    DOI: 10.1021/acs.chemmater.6b02783

  • Low‐Temperature Cationic Rearrangement in a Bulk Metal Oxide Reviewed International journal

    Man‐Rong Li, Maria Retuerto, Peter W Stephens, Mark Croft, Denis Sheptyakov, Vladimir Pomjakushin, Zheng Deng, Hirofumi Akamatsu, Venkatraman Gopalan, Javier Sánchez‐Benítez, Felix O Saouma, Joon I Jang, David Walker, Martha Greenblatt

    128 ( 34 )   10016 - 10021   2016.8

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  • Synthesis and characterizations of MoSxSe2-x and WSxSe2-x solid solutions Reviewed

    Minh An Nguyen, Arnab Sen Gupta, Jacob Shervin, Hirofumi Akamatsu, Ana Laura Elias, Mauricio Terrones, Jun Zhu, Venkatraman Gopalan, Thomas Mallouk

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   252   2016.8

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  • Noncentrosymmetry induced by oxygen octahedral rotations competing with octahedral sliding in Ruddlesden-Popper phases, HRTiO4 (R = rare earths) Reviewed

    Arnab Sen Gupta, Hirofumi Akamatsu, Forrest Brown, Megan Strayer, Minh An Nguyen, Thomas Mallouk, Venkatraman Gopalan

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   252   2016.8

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  • Low-Temperature Cationic Rearrangement in a Bulk Metal Oxide Reviewed

    Man-Rong Li, Maria Retuerto, Peter W. Stephens, Mark Croft, Denis Sheptyakov, Vladimir Pomjakushin, Zheng Deng, Hirofumi Akamatsu, Venkatraman Gopalan, Javier Sanchez-Benitez, Felix O. Saouma, Joon I. Jang, David Walker, Martha Greenblatt

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   55 ( 34 )   9862 - 9867   2016.8

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

    DOI: 10.1002/anie.201511360

  • Structural phase transitions in EuNbO3 perovskite Reviewed

    Yoshiro Kususe, Suguru Yoshida, Koji Fujita, Hirofumi Akamatsu, Masafumi Fukuzumi, Shunsuke Murai, Katsuhisa Tanaka

    JOURNAL OF SOLID STATE CHEMISTRY   239   192 - 199   2016.7

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

    DOI: 10.1016/j.jssc.2016.04.032

  • Emergent Noncentrosymmetry and Piezoelectricity Driven by Oxygen Octahedral Rotations in n=2 Dion-Jacobson Phase Layer Perovskites Reviewed

    Megan E. Strayer, Arnab Sen Gupta, Hirofumi Akamatsu, Shiming Lei, Nicole A. Benedek, Venkatraman Gopalan, Thomas E. Mallouk

    ADVANCED FUNCTIONAL MATERIALS   26 ( 12 )   1930 - 1937   2016.3

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

    DOI: 10.1002/adfm.201504046

  • Competing broken inversion symmetry and oxygen octahedral sliding phenomena in n=1 Ruddlesden popper derivative HRTiO4 (R=Nd, Sm, Eu, Gd, and Dy) family Reviewed

    Forrest Brown, Arnab Sen Gupta, Hirofumi Akamatsu, Minh An Nguyen, Thomas Mallouk, Venkatraman Gopalan

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   251   2016.3

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  • PbMn(IV)TeO6: A New Noncentrosymmetric Layered Honeycomb Magnetic Oxide Reviewed

    Sun Woo Kim, Zheng Deng, Man-Rong Li, Arnab Sen Gupta, Hirofumi Akamatsu, Venkatraman Gopalan, Martha Greenblatt

    INORGANIC CHEMISTRY   55 ( 3 )   1333 - 1338   2016.2

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

    DOI: 10.1021/acs.inorgchem.5b02677

  • Improper Inversion Symmetry Breaking and Piezoelectricity through Oxygen Octahedral Rotations in Layered Perovskite Family, LiRTiO4 (R = Rare Earths) Reviewed

    Arnab Sen Gupta, Hirofumi Akamatsu, Megan E. Strayer, Shiming Lei, Toshihiro Kuge, Koji Fujita, Clarina dela Cruz, Atsushi Togo, Isao Tanaka, Katsuhisa Tanaka, Thomas E. Mallouk, Venkatraman Gopalan

    ADVANCED ELECTRONIC MATERIALS   2 ( 1 )   2016.1

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

    DOI: 10.1002/aelm.201500196

  • A labile hydride strategy for the synthesis of heavily nitridized BaTiO3 Reviewed

    Takeshi Yajima, Fumitaka Takeiri, Kohei Aidzu, Hirofumi Akamatsu, Koji Fujita, Wataru Yoshimune, Masatoshi Ohkura, Shiming Lei, Venkatraman Gopalan, Katsuhisa Tanaka, Craig M. Brown, Mark A. Green, Takafumi Yamamoto, Yoji Kobayashi, Hiroshi Kageyama

    NATURE CHEMISTRY   7 ( 12 )   1017 - 1023   2015.12

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

    DOI: 10.1038/NCHEM.2370

  • A labile hydride strategy for the synthesis of heavily nitridized BaTiO3 Reviewed

    Takeshi Yajima, Fumitaka Takeiri, Kohei Aidzu, Hirofumi Akamatsu, Koji Fujita, Wataru Yoshimune, Masatoshi Ohkura, Shiming Lei, Venkatraman Gopalan, Katsuhisa Tanaka, Craig M. Brown, Mark A. Green, Takafumi Yamamoto, Yoji Kobayashi, Hiroshi Kageyama

    NATURE CHEMISTRY   7 ( 12 )   1017 - 1023   2015.12

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

    DOI: 10.1038/NCHEM.2370

  • New polar and magnetic corundum - type oxides, A2BB ' O6:High pressure synthesis Reviewed

    Martha Greenblatt, Manrong Li, Maria Retuerto, Zheng Deng, Mark Croft, David Vanderbilt, Meng Ye, Peter Stephens, Joke Hadermann, David Walker, Joachim Hemberger, Christoph Grams, Chang-Qing Jin, Wen-Min Li, Joon Jang, Felix Saouma, Venkatraman Gopalan, Hirofumi Akamatsu

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   250   2015.8

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    Language:English  

  • Mn2FeWO6: A New Ni3TeO6-Type Polar and Magnetic Oxide Reviewed

    Man-Rong Li, Mark Croft, Peter W. Stephens, Meng Ye, David Vanderbilt, Maria Retuerto, Zheng Deng, Christoph P. Grams, Joachim Hemberger, Joke Hadermann, Wen-Min Li, Chang-Qing Jin, Felix O. Saouma, Joon I. Jang, Hirofumi Akamatsu, Venkatraman Gopalan, David Walker, Martha Greenblatt

    ADVANCED MATERIALS   27 ( 13 )   2177 - +   2015.4

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    DOI: 10.1002/adma.201405244

  • Room-Temperature Polar Ferromagnet ScFeO3 Transformed from a High-Pressure Orthorhombic Perovskite Phase Reviewed

    Takahiro Kawamoto, Koji Fujita, Ikuya Yamada, Tomohiko Matoba, Sung Joo Kim, Peng Gao, Xiaoqing Pan, Scott D. Findlay, Cedric Tassel, Hiroshi Kageyama, Andrew J. Studer, James Hester, Tetsuo Irifune, Hirofumi Akamatsu, Katsuhisa Tanaka

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   136 ( 43 )   15291 - 15299   2014.10

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

    DOI: 10.1021/ja507958z

  • Inversion Symmetry Breaking by Oxygen Octahedral Rotations in the Ruddlesden-Popper NaRTiO4 Family Reviewed

    Hirofumi Akamatsu, Koji Fujita, Toshihiro Kuge, Arnab Sen Gupta, Atsushi Togo, Shiming Lei, Fei Xue, Greg Stone, James M. Rondinelli, Long-Qing Chen, Isao Tanaka, Venkatraman Gopalan, Katsuhisa Tanaka

    PHYSICAL REVIEW LETTERS   112 ( 18 )   2014.5

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    DOI: 10.1103/PhysRevLett.112.187602

  • Superspin glass behavior of amorphous FeO-SiO2 thin films Reviewed

    Yuko Nakatsuka, Hirofumi Akamatsu, Shunsuke Murai, Koji Fujita, Katsuhisa Tanaka

    JAPANESE JOURNAL OF APPLIED PHYSICS   53 ( 5 )   2014.5

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    DOI: 10.7567/JJAP.53.05FB11

  • AgCu3V4O12: a Novel Perovskite Containing Mixed-Valence Silver ions Reviewed

    Yasuhide Akizuki, Ikuya Yamada, Koji Fujita, Hirofumi Akamatsu, Tetsuo Irifune, Katsuhisa Tanaka

    INORGANIC CHEMISTRY   52 ( 24 )   13824 - 13826   2013.12

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    DOI: 10.1021/ic402579v

  • Magneto-optical properties of Eu2+-containing aluminoborosilicate glasses with ferromagnetic interactions Reviewed

    Hirofumi Akamatsu, Koji Fujita, Yuko Nakatsuka, Shunsuke Mural, Katsuhisa Tanaka

    OPTICAL MATERIALS   35 ( 11 )   1997 - 2000   2013.9

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    DOI: 10.1016/j.optmat.2012.10.029

  • Ferromagnetic amorphous oxides in the EuO-TiO2 system studied by the Faraday effect in the visible region and the x-ray magnetic circular dichroism at the Eu M-4,M-5 and L-2,L-3 edges Reviewed

    Takahiro Kawamoto, Koji Fujita, Hirofumi Akamatsu, Tetsuya Nakamura, Toyohiko Kinoshita, Masaichiro Mizumaki, Naomi Kawamura, Motohiro Suzuki, Yoshiro Kususe, Shunsuke Murai, Katsuhisa Tanaka

    PHYSICAL REVIEW B   88 ( 2 )   2013.7

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    DOI: 10.1103/PhysRevB.88.024405

  • Strong Spin-Lattice Coupling Through Oxygen Octahedral Rotation in Divalent Europium Perovskites Reviewed

    Hirofumi Akamatsu, Yu Kumagai, Fumiyasu Oba, Koji Fujita, Katsuhisa Tanaka, Isao Tanaka

    ADVANCED FUNCTIONAL MATERIALS   23 ( 15 )   1864 - 1872   2013.4

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    DOI: 10.1002/adfm.201202477

  • Ferromagnetism induced by lattice volume expansion and amorphization in EuTiO3 thin films Reviewed

    Katsuhisa Tanaka, Koji Fujita, Yuya Maruyama, Yoshiro Kususe, Hideo Murakami, Hirofumi Akamatsu, Yanhua Zong, Shunsuke Murai

    JOURNAL OF MATERIALS RESEARCH   28 ( 8 )   1031 - 1041   2013.4

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    DOI: 10.1557/jmr.2013.60

  • Magnetic and magneto-optical quenching in (Mn2+, Sr2+) metaphosphate glasses Reviewed

    Optical Materials Express   3 ( 2 )   184 - 193   2013.2

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    DOI: 10.1364/OME.3.000184

  • Effect of substrate strain and interface on magnetic properties of EuTiO3 thin film

    Katsuhisa Tanaka, Koji Fujita, Yuya Maruyama, Yoshiro Kususe, Hideo Murakami, Hirofumi Akamatsu, Shunsuke Murai

    2012 MRS Spring Meeting Nanocomposites, Nanostructures and Heterostructures of Correlated Oxide Systems   1454   149 - 159   2012.12

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    DOI: 10.1557/opl.2012.962

  • Crystal and Electronic Structure and Magnetic Properties of Divalent Europium Perovskite Oxides EuMO3 (M = Ti, Zr, and Hf): Experimental and First-Principles Approaches Reviewed

    Hirofumi Akamatsu, Koji Fujita, Hiroyuki Hayashi, Takahiro Kawamoto, Yu Kumagai, Yanhua Zong, Koji Iwata, Fumiyasu Oba, Isao Tanaka, Katsuhisa Tanaka

    INORGANIC CHEMISTRY   51 ( 8 )   4560 - 4567   2012.4

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    DOI: 10.1021/ic2024567

  • Local Structure of Amorphous EuO-TiO2 Thin Films Probed by X-Ray Absorption Fine Structure Reviewed

    Yanhua Zong, Koji Fujita, Hirofumi Akamatsu, Seisuke Nakashima, Shunsuke Murai, Katsuhisa Tanaka

    JOURNAL OF THE AMERICAN CERAMIC SOCIETY   95 ( 2 )   716 - 720   2012.2

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    DOI: 10.1111/j.1551-2916.2011.04849.x

  • Ferromagnetic properties with reentrant spin-glass behavior in amorphous EuZrO3 thin film Reviewed

    Yanhua Zong, Koji Fujita, Hirofumi Akamatsu, Shunsuke Murai, Katsuhisa Tanaka

    Physica Status Solidi (C) Current Topics in Solid State Physics   8 ( 11-12 )   3051 - 3054   2011.11

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    DOI: 10.1002/pssc.201000703

  • Magnetic properties of oxide glasses containing iron and rare-earth ions Reviewed

    Hirofumi Akamatsu, Jun Kawabata, Koji Fujita, Shunsuke Murai, Katsuhisa Tanaka

    PHYSICAL REVIEW B   84 ( 14 )   2011.10

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    DOI: 10.1103/PhysRevB.84.144408

  • Antiferromagnetic superexchange via 3d states of titanium in EuTiO3 as seen from hybrid Hartree-Fock density functional calculations Reviewed

    Hirofumi Akamatsu, Yu Kumagai, Fumiyasu Oba, Koji Fujita, Hideo Murakami, Katsuhisa Tanaka, Isao Tanaka

    PHYSICAL REVIEW B   83 ( 21 )   2011.6

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    DOI: 10.1103/PhysRevB.83.214421

  • Impact of amorphization on the magnetic properties of EuO-TiO2 system Reviewed

    Hirofumi Akamatsu, Koji Fujita, Yanhua Zong, Naohiro Takemoto, Shunsuke Murai, Katsuhisa Tanaka

    Physical Review B - Condensed Matter and Materials Physics   82 ( 22 )   2010.12

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    DOI: 10.1103/PhysRevB.82.224403

  • Impact of amorphization on the magnetic properties of EuO-TiO2 system Reviewed

    Hirofumi Akamatsu, Koji Fujita, Yanhua Zong, Naohiro Takemoto, Shunsuke Murai, Katsuhisa Tanaka

    PHYSICAL REVIEW B   82 ( 22 )   2010.12

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    DOI: 10.1103/PhysRevB.82.224403

  • Preparation and magnetic properties of amorphous EuTiO3 thin films Reviewed

    Yanhua Zong, Kazuma Kugimiya, Koji Fujita, Hirofumi Akamatsu, Kazuyuki Hirao, Katsuhisa Tanaka

    JOURNAL OF NON-CRYSTALLINE SOLIDS   356 ( 44-49 )   2389 - 2392   2010.10

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    DOI: 10.1016/j.jnoncrysol.2010.05.014

  • Antiferromagnetism of perovskite EuZrO3 Reviewed

    Yanhua Zong, Koji Fujita, Hirofumi Akamatsu, Shunsuke Murai, Katsuhisa Tanaka

    JOURNAL OF SOLID STATE CHEMISTRY   183 ( 1 )   168 - 172   2010.1

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    DOI: 10.1016/j.jssc.2009.10.014

  • Ferromagnetic Eu2+-based oxide glasses with reentrant spin glass behavior Reviewed

    Hirofumi Akamatsu, Koji Fujita, Shunsuke Murai, Katsuhisa Tanaka

    PHYSICAL REVIEW B   81 ( 1 )   2010.1

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    DOI: 10.1103/PhysRevB.81.014423

  • Magnetic properties of mixed-valence iron phosphate glasses Reviewed

    Hirofumi Akamatsu, Satoshi Oku, Koji Fujita, Shunsuke Murai, Katsuhisa Tanaka

    PHYSICAL REVIEW B   80 ( 13 )   2009.10

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    DOI: 10.1103/PhysRevB.80.134408

  • Structural characterization of hierarchically porous alumina aerogel and xerogel monoliths Reviewed

    Yasuaki Tokudome, Kazuki Nakanishi, Kazuyoshi Kanamori, Koji Fujita, Hirofumi Akamatsu, Teiichi Hanada

    JOURNAL OF COLLOID AND INTERFACE SCIENCE   338 ( 2 )   506 - 513   2009.10

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    DOI: 10.1016/j.jcis.2009.06.042

  • Structural and Magnetic Properties of CdFe2O4 Thin Films Fabricated via Sputtering Method Reviewed

    Hirofumi Akamatsu, Yanhua Zong, Yosefu Fujiki, Kazuaki Kamiya, Koji Fujita, Shunsuke Murai, Katsuhisa Tanaka

    IEEE TRANSACTIONS ON MAGNETICS   44 ( 11 )   2796 - 2799   2008.11

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    DOI: 10.1109/TMAG.2008.2001508

  • Magneto-optical properties of transparent divalent iron phosphate glasses Reviewed

    Hirofumi Akamatsu, Koji Fujita, Shunsuke Murai, Katsuhisa Tanaka

    APPLIED PHYSICS LETTERS   92 ( 25 )   2008.6

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    DOI: 10.1063/1.2952460

  • Magnetic phase transitions in Fe2O3-Bi2O3-B2O3 glasses Reviewed

    Hirofumi Akamatsu, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai

    JOURNAL OF PHYSICS-CONDENSED MATTER   20 ( 23 )   2008.6

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    DOI: 10.1088/0953-8984/20/23/235216

  • Magnetic properties of disordered oxides with iron and manganese ions Reviewed

    Katsuhisa Tanaka, Hirofumi Akamatsu, Seisuke Nakashima, Koji Fujita

    JOURNAL OF NON-CRYSTALLINE SOLIDS   354 ( 12-13 )   1347 - 1352   2008.2

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    DOI: 10.1016/j.jnoncrysol.2007.01.107

  • Magnetic properties of amorphous Fe2O3-R 2O3 (R = La, Gd and Tb) thin films fabricated by sputtering method

    Hirofumi Akamatsu, Shunsuke Murai, Koji Fujita, Katsuhisa Tanaka

    Glass - The Challenge for the 21st Century - 9th ESG Conference with the Annual Meeting of the ICG Glass - The Challenge for the 21st Century - 9th ESG Conference with the Annual Meeting of the ICG   39-40   207 - 212   2008

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  • Spin dynamics in oxide glass of Fe2O3-Bi2O3-B2O3 system Reviewed

    Hirofumi Akamatsu, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   310 ( 2 )   1506 - 1507   2007.3

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    DOI: 10.1016/j.jmmm.2006.10.649

  • Spin dynamics in Fe2O3-TeO2 glass: Experimental evidence for an amorphous oxide spin glass Reviewed

    Hirofumi Akamatsu, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai

    PHYSICAL REVIEW B   74 ( 1 )   2006.7

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    DOI: 10.1103/PhysRevB.74.012411

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Presentations

  • フッ素含有ポリマーを用いた層状ペロブスカイト酸化物 NaRTiO4 (R: 希土類)のトポケミカルフッ素化と結晶構造解析

    宮西あおい・大野真之・林克郎・赤松寛文

    第62 回セラミックス基礎科学討論会  2024.1 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:上智大学, 東京   Country:Japan  

  • A Novel Lithium Niobate-Type Fluoride LiCoF3 Synthesized via Topochemical Reaction Invited International conference

    Hirofumi AKAMATSU

    The 37th International Korea-Japan Seminar on Ceramics  2023.11 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  • トポケミカル反応を用いた極性・非中心対称性化合物の合成 Invited

    赤松 寛文

    強的秩序とその操作に関わる 第17回 夏の学校  2023.9 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:キャナルシティ博多, 福岡   Country:Japan  

  • 低温トポケミカル反応により合成したLixCoF3 の構造と物性に及ぼす熱処理効果

    山田 珠光・松尾 祐美・松川 祐子・大野 真之・林 克郎・赤松 寛文・藤田 晃司・小野寺 陽平

    日本セラミックス協会第36回秋季シンポジウム  2023.9 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都工芸繊維大学, 京都   Country:Japan  

  • 層状ペロブスカイトの機能化に向けた配位八面体回転制御 Invited

    赤松 寛文

    日本セラミックス協会第36回秋季シンポジウム  2023.9 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都工芸繊維大学, 京都   Country:Japan  

  • Controlling Octahedral Rotations through Anion Modification in Layered Perovskite Oxides International conference

    H. Akamatsu, K. Ishibuchi, S. Yoshida, S. Ohno, and K. Hayashi

    WE-Heraeus-Seminar: Beyond imperfections: New Structure-Property Relationships in Ceramics and Glasses  2023.5 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Germany  

  • 層状ペロブスカイトの層間侵入アニオンが形成する超秩序構造の解明と電気的秩序の制御

    赤松 寛文

    超秩序構造科学 第5回成果報告会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 高温ニオブ酸リチウム型構造をもつ LixCoF3のトポケミカル合成と局所構造解析

    赤松 寛文・松尾 祐美・松川 祐子・大野 真之・林 克郎・小野寺 陽平

    日本セラミックス協会 2023 年年会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川大学 みなとみらいキャンパス   Country:Japan  

  • トポケミカルフッ素化した層状ペロブスカイトSr1.1Tb1.9Fe2O7の結晶構造

    伊藤 大志, 大野 真之, 林 克郎, 赤松 寛文

    第61回セラミックス基礎科学討論会  2023.1 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学津島キャンパス   Country:Japan  

  • 伊藤大志・吉田傑・大野真之・林克郎・赤松寛文

    Ruddlesden-Popper 型層状ペロブスカイトへのフッ素導入による構造歪み制御

    学術変革領域研究(A)「超秩序構造が創造する物性科学」第4回成果報告会」  2022.10 

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    Event date: 2022.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:つくば市、国立研究開発法人物質・材料研究機構   Country:Japan  

  • 新規フッ化物LixCoF3 のトポケミカル合成と局所構造解析

    赤松 寛文

    学術変革領域研究(A)「超秩序構造が創造する物性科学」第4回成果報告会」  2022.10 

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    Event date: 2022.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:つくば市、国立研究開発法人物質・材料研究機構   Country:Japan  

  • 低許容因子ペロブスカイト型フッ化物LixCoF3 のトポケミカル合成

    松尾祐美・松川祐子・北角将晃・吉田傑・大野真之・林克郎・赤松寛文

    学術変革領域研究(A)「超秩序構造が創造する物性科学」第4回成果報告会」  2022.10 

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    Event date: 2022.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • SPS 法により作製した Li2SrNb2O7セラミックスの誘電特性

    秋 徹志・赤松 寛文*・大野 真之・林 克郎

    第35回秋季シンポジウム 日本セラミックス協会  2022.9 

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:徳島大学   Country:Japan  

  • Topochemical Synthesis and Crystal Structure Analysis of LiCoF3 International conference

    Hirofumi Akamatsu

    "International Workshop on Exploration of Atomistic Disorder in Long-Range Ordered Systems and of Order in Disordered Materials"  2022.9 

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    Event date: 2022.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 放射光を用いた新規フッ化物LixCoF3の結晶構造・電子状態解析 Invited

    松尾祐美, 松川祐子, 北角将晃, 長谷川丈二, 吉田傑, 久保中亮翔, 吉田悠哉, 川崎龍志, 小林英一, 森吉千佳子, 大野真之, 藤田晃司, 林克郎, 赤松寛文

    XAFS討論会・SAGA-LS成果報告会  2022.8 

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    Event date: 2022.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン開催   Country:Japan  

  • Fluorination-Induced Rotations of Anion Coordinated Octahedra in a Layered Perovskite NaLaTiO4 International conference

    Hirofumi Akamatsu, Keisuke Ishibuchi, Suguru Yoshida, Saneyuki Ohno, Katsuro Hayashi

    International Conference on Mixed–Anion Compounds  2021.12 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Kobe, hybrid   Country:Japan  

  • 低許容因子ペロブスカイト型フッ化物LixCoF3のトポケミカル合成

    松尾祐美、松川祐子、北角将晃、赤松寛文、長谷川丈二、吉田傑、大野真之、林克郎

    第34回日本セラミックス協会秋季シンポジウム  2021.9 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:山梨大学(甲府キャンパス) オンライン開催   Country:Japan  

  • 層状ペロブスカイト NaLaTiO4 へのフッ素導入による配位八面体回転誘起

    石渕圭祐、赤松寛文、吉田傑、大野真之、林克郎

    第34回日本セラミックス協会秋季シンポジウム  2021.9 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:山梨大学(甲府キャンパス) オンライン開催   Country:Japan  

  • 低許容因子ペロブスカイト化合物のトポケミカル合成と構造・物性評価 Invited

    赤松 寛文、松尾 祐美、松川 祐子、北角 将晃、長谷川 丈二、吉田 傑、大野 真之、林 克郎

    東京工業大学フロンティア材料研究所先端無機材料共同研究拠点成果報告会  2021.7 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学フロンティア材料研究所オンライン開催   Country:Japan  

  • ゾーン境界フォノン凍結に関する電子論

    吉田傑、赤松寛文、林克郎

    2021年秋季大会プログラム オンライン開催  2021.9 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン開催   Country:Japan  

  • ブリルアンゾーン境界フォノン凍結に関する電子論—配位八面体回転 の 電子論的起源 —

    吉田傑、赤松寛文、林克郎

    第41回電子材料研究討論会  2021.11 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン開催   Country:Japan  

  • Dion-Jacobson層状ペロブスカイトCsNdNb2O7およびRbNdNb2O7における強誘電スイッチング Invited

    赤松寛文、 麻木宗太、長谷川丈二、林克郎 

    第30回日本MRS年次大会  2020.12 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

    Recently, the development of novel ferroelectrics has been accelerated since Benedek and Fennie rationalized a novel design principle of ferroelectric layered perovskite oxides, in which a spontaneous polarization can be induced symmetrically and energetically by a combination of two non-polar rotation modes of oxygen octahedra via trilinear coupling. This is called hybrid improper ferroelectricity. In this work, we focus on Dion-Jacobson (DJ) layered perovskites CsNdNb2O7 and RbNdNb2O7. Recent detailed structural analyses revealed the crystal structures of CsNdNb2O7 and RbNdNb2O7 belong to polar space groups P21am and I2cm, respectively, but their ferroelectricity is not reported yet.
    Here we report the experimental demonstration of the ferroelectric switching for the DJ phases prepared by a conventional solid-state reaction method. The ceramic pellets of the DJ phases show the remanent polarizations much larger than those observed for polycrystalline samples of other hybrid improper ferroelectrics (Fig. 1). We will also discuss the results of our first-principles calculations on ferroelectric switching pathways in order to get an insight into the low coercive fields of the DJ phases.

  • 酸素配位八面体回転を利用した層状ペロブスカイト圧電体・強誘電体の開発 Invited

    赤松寛文

    第40回電子材料研究討論会  2020.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • Dion-Jacobson相(Rb,Cs)NdNb2O7の構造相転移と誘電特性

    赤松 寛文, 麻木 宗太, 長谷川 丈二, 林 克郎

    第37回強誘電体会議  2020.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:コープイン京都   Country:Japan  

  • Computational and Experimental Study of Functional Structural Distortions in Layered Perovskite Oxides Invited International conference

    H. Akamatsu

    MatScience2018  2018.5 

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    Event date: 2018.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 還元ブルッカイト型二酸化チタンの作製と光触媒特性評価

    松川 祐子, 稲田 幹, 長谷川 丈二, 赤松 寛文, 榎本 尚也, 林 克郎

    複合アニオンキックオフミーティング(2017年5月)  2017.5 

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  • Ti3C2 MXeneの昇温脱離挙動と新規窒化物材料の生成

    西見 和真, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    複合アニオンキックオフミーティング(2017年5月)  2017.5 

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  • 還元型TiO2(B)の合成

    田中 萌子, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    複合アニオンキックオフミーティング(2017年5月)  2017.5 

  • エチレングリーコール添加水熱合成BaTiO3結晶中の水酸化物イオン

    倉田 真志, 稲田 幹, 長谷川 丈二, 赤松 寛文, 林 克郎

    複合アニオンキックオフミーティング(2017年5月)  2017.5 

  • 表面官能基制御を目指したMXeneへの遷移金属元素ドーピング

    嶋 一成,長谷川 丈二,稲田 幹,赤松 寛文、林 克郎

    複合アニオンキックオフミーティング(2017年5月)  2017.5 

  • 表面官能基制御を目指したMXeneへの遷移金属元素ドーピング

    嶋 一成, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    複合アニオンキックオフミーティング(2017年5月)  2017.5 

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  • エチレングリーコール添加水熱合成BaTiO3結晶中の水酸化物イオン

    倉田 真志, 稲田 幹, 長谷川 丈二, 赤松 寛文, 林 克郎

    複合アニオンキックオフミーティング(2017年5月)  2017.5 

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  • 還元型TiO2(B)の合成

    田中 萌子, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    複合アニオンキックオフミーティング(2017年5月)  2017.5 

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  • Ti3C2 MXeneの昇温脱離挙動と新規窒化物材料の生成

    西見 和真, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    複合アニオンキックオフミーティング(2017年5月)  2017.5 

  • 還元ブルッカイト型二酸化チタンの作製と光触媒特性評価

    松川 祐子, 稲田 幹, 長谷川 丈二, 赤松 寛文, 榎本 尚也, 林 克郎

    複合アニオンキックオフミーティング(2017年5月)  2017.5 

  • 非水系反応によるコバルト硫化物ナノ粒子の形態制御

    松川 祐子, 長谷川 丈二, 赤松 寛文, 林 克郎

    複合アニオントピカル会議(2017年8月)  2017.8 

  • 固相還元処理した電子ドープTiO2(B)

    田中 萌子, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    複合アニオントピカル会議(2017年8月)  2017.8 

  • エチレングリコール添加水熱合成BaTiO3結晶中の水酸化物イオン(2)

    倉田 真志, 稲田 幹, 長谷川 丈二, 赤松 寛文, 林 克郎

    複合アニオントピカル会議(2017年8月)  2017.8 

  • 金属炭化物ナノシートMXeneへの遷移金属ドーピングと表面官能基制御

    嶋 一成,長谷川 丈二,稲田 幹,赤松 寛文、林 克郎

    複合アニオントピカル会議(2017年8月)  2017.8 

  • 金属炭化物ナノシートMXeneへの遷移金属ドーピングと表面官能基制御

    嶋 一成, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    複合アニオントピカル会議(2017年8月)  2017.8 

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  • エチレングリコール添加水熱合成BaTiO3結晶中の水酸化物イオン(2)

    倉田 真志, 稲田 幹, 長谷川 丈二, 赤松 寛文, 林 克郎

    複合アニオントピカル会議(2017年8月)  2017.8 

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  • 固相還元処理した電子ドープTiO2(B)

    田中 萌子, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    複合アニオントピカル会議(2017年8月)  2017.8 

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  • 非水系反応によるコバルト硫化物ナノ粒子の形態制御

    松川 祐子, 長谷川 丈二, 赤松 寛文, 林 克郎

    複合アニオントピカル会議(2017年8月)  2017.8 

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  • Inversion Symmetry Breaking by Oxygen Octahedral Tilts in Layered Perovskites ARTiO4 (A=Hydrogen, Alkaline, R=Rare Earth) and Unexpected Alkaline Size Effects

    IUMRS-ICAM2017  2017.8 

  • Inversion Symmetry Breaking by Oxygen Octahedral Rotation in A-siteordered n=1 Ruddlesden-Popper Phases AA’TiO4 (A=alkaline, A’=rare earth) and the cation size effects

    赤松 寛文

    2017.9 

  • 水熱合成正方晶 BaTiO3 結晶中の水酸化物イオン

    倉田 真志, 稲田 幹, 長谷川 丈二, 赤松 寛文, 林 克郎, 前園 涼, 本郷 研太

    日本セラミックス協会第30回秋季シンポジウム  2017.9 

  • NASICON/固体金属Na界面の輸送特性

    内田 康博, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    日本セラミックス協会第30回秋季シンポジウム  2017.9 

  • W をドープした Ti3AlC2の作製と金属炭化物ナノシートへの転換

    嶋 一成,長谷川 丈二,稲田 幹,赤松 寛文、林 克郎

    日本セラミックス協会第30回秋季シンポジウム  2017.9 

  • W をドープした Ti3AlC2の作製と金属炭化物ナノシートへの転換

    嶋 一成, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    日本セラミックス協会 第32回秋季シンポジウム  2017.9 

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  • NASICON/固体金属Na界面の輸送特性

    内田 康博, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    日本セラミックス協会 第33回秋季シンポジウム  2017.9 

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  • 水熱合成正方晶 BaTiO3 結晶中の水酸化物イオン

    倉田 真志, 稲田 幹, 長谷川 丈二, 赤松 寛文, 林 克郎, 前園 涼, 本郷 研太

    日本セラミックス協会 第34回秋季シンポジウム  2017.9 

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  • Aサイト秩序型n=1ルドルスデン-ポッパー相における酸素配位八面体回転による中心対称性の破れ

    赤松 寛文

    日本セラミックス協会第30回秋季シンポジウム  2017.9 

  • 液相合成TiO2(B)の低温還元

    田中 萌子, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    日本セラミックス協会第30回秋季シンポジウム  2017.9 

  • 液相合成TiO2(B)の低温還元

    田中 萌子, 長谷川 丈二, 稲田 幹, 赤松 寛文, 林 克郎

    日本セラミックス協会 第31回秋季シンポジウム  2017.9 

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  • Mg(BF4)2系電解液中での Mg 電析反応の電極基板依存性

    田中 萌子, 長谷川 丈二, 赤松 寛文, 林 克郎

    第58回電池討論会  2017.11 

  • Mg(BF4)2系電解液中での Mg 電析反応の電極基板依存性

    田中 萌子, 長谷川 丈二, 赤松 寛文, 林 克郎

    第58回電池討論会  2017.11 

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  • Kinetic Analysis of Adsorption and Photodecomposition Processes on TiO2 Particles with Different Crystalline Phases

    Yuko MATSUKAWA, Miki INADA, George HASEGAWA, Hirofumi AKAMATSU, Naoya ENOMOYO, Katsuro HAYASHI

    The 34th International Japan-Korea Seminar on Ceramics  2017.11 

  • Kinetic Analysis of Adsorption and Photodecomposition Processes on TiO2 Particles with Different Crystalline Phases

    Yuko MATSUKAWA, Miki INADA, George HASEGAWA, Hirofumi AKAMATSU, Naoya ENOMOYO, Katsuro HAYASHI

    The 34th International Japan-Korea Seminar on Ceramics  2017.11 

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    Kinetic Analysis of Adsorption and Photodecomposition Processes on TiO2 Particles with Different Crystalline Phases

  • 層状ペロブスカイトにおける酸素配位八面体回転による中心対称性の破れ

    赤松 寛文

    第27回日本MRS年次大会  2017.12 

  • シート状化合物 Ti3C2Tx を前駆体とした特異構造を有する窒化チタンの作製

    西見 和真, 長谷川 丈二, 赤松 寛文, 林 克郎

    第56回セラミックス基礎科学討論会  2018.1 

  • シート状化合物 Ti3C2Tx を前駆体とした特異構造を有する窒化チタンの作製

    西見 和真, 長谷川 丈二, 赤松 寛文, 林 克郎

    第56回セラミックス基礎科学討論会  2018.1 

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  • 液相法を用いたコバルト硫化物ナノ粒子の作製

    松川 祐子、長谷川 丈二、赤松 寛文、林 克郎

    日本セラミックス協会2018年年会  2018.3 

  • 液相法を用いたコバルト硫化物ナノ粒子の作製

    松川 祐子, 長谷川 丈二, 赤松 寛文, 林 克郎

    日本セラミックス協会2018年年会  2018.3 

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  • 階層的多孔構造を有するフェノール樹脂の細孔構造制御と炭素化

    矢野 貴也, 長谷川 丈二, 赤松 寛文, 林 克郎

    日本ゾル-ゲル学会第16回討論会  2018.8 

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  • 層状ペロブスカイトCa3Ti2O7への水素化物イオンドーピング

    岸本 和久, 赤松 寛文, 長谷川 丈二, 林 克郎

    新学術複合アニオン第4回若手スクール  2018.8 

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  • Mg二次電池用NASICON系複合アニオン正極材料の探索

    佐々木 直哉, 秋山 優斗, 長谷川 丈二, 赤松 寛文, 林 克郎

    新学術複合アニオン第4回若手スクール  2018.8 

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  • クエン酸ゲル前駆体からのNASICON型化合物/カーボン複合体の作製とその電気化学特性評価

    秋山 優斗, 長谷川 丈二, 赤松 寛文, 林 克郎

    セラミックス協会第31回秋季シンポジウム  2018.9 

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  • Dion-Jacobson型層状ペロブスカイト(Rb, Cs)NdNb2O7の構造と誘電特性

    麻木 宗太, 赤松 寛文, 長谷川 丈二, 林 克郎

    セラミックス協会第31回秋季シンポジウム  2018.9 

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  • Dion-Jacobson型層状ペロブスカイト(Rb, Cs)NdNb2O7の構造と誘電特性

    麻木 宗太, 赤松 寛文, 長谷川 丈二, 林 克郎

    セラミックス協会第31回秋季シンポジウム  2018.9 

  • クエン酸ゲル前駆体からのNASICON型化合物/カーボン複合体の作製とその電気化学特性評価

    秋山 優斗, 長谷川 丈二, 赤松 寛文, 林 克郎

    セラミックス協会第31回秋季シンポジウム  2018.9 

  • 第一原理計算による新規層状ペロブスカイト酸窒化物強誘電体の探索

    白井 佑弥, 赤松 寛文, 長谷川 丈二, 林 克郎

    セラミックス協会第31回秋季シンポジウム  2018.9 

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  • SPS 配向 Ti3AlC2 を用いた配向 MXene の生成

    鶴野 伸嘉, 嶋 一成, 長谷川 丈二, 赤松 寛文, 林 克郎

    セラミックス協会第31回秋季シンポジウム  2018.9 

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  • BaSnO3 系ペロブスカイトへの水素化物イオンドーピング

    渡部 寛, 長谷川 丈二, 赤松 寛文, 林 克郎

    セラミックス協会第31回秋季シンポジウム  2018.9 

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  • BaSnO3 系ペロブスカイトへの水素化物イオンドーピング

    渡部 寛, 長谷川 丈二, 赤松 寛文, 林 克郎

    セラミックス協会第31回秋季シンポジウム  2018.9 

  • SPS 配向 Ti3AlC2 を用いた配向 MXene の生成

    鶴野 伸嘉, 嶋 一成, 長谷川 丈二, 赤松 寛文, 林 克郎

    セラミックス協会第31回秋季シンポジウム  2018.9 

  • 第一原理計算による新規層状ペロブスカイト酸窒化物強誘電体の探索

    白井 佑弥, 赤松 寛文, 長谷川 丈二, 林 克郎

    セラミックス協会第31回秋季シンポジウム  2018.9 

  • Self-Standing Na3V2(PO4)3 Ceramic Sheet Prepared with Sintering Aid of Na2O-Nb2O5-P2O5 Glass for All Solid State Battery

    He Wang, George Hasegawa, Yuto Akiyama, Hirofumi Akamatsu, Miki Inada, Katsuro Hayashi

    5th SCI workshop  2018.9 

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  • Exploration of novel ferroelectric layered perovskite oxides by first-principles calculations

    Yuya Shirai, Hirofumi Akamatsu, George Hasegawa, Katsuro Hayashi

    5th SCI workshop  2018.9 

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  • High concentration of Sn2+ in reduced BaSn1-xYxO3-x/2

    Hiroshi Watanabe, George Hasegawa, Hirofumi Akamatsu, Kotaro Fujii, Masatomo Yashima, Miki Inada, Katsuro Hayashi

    5th SCI workshop  2018.9 

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  • High concentration of Sn2+ in reduced BaSn1-xYxO3-x/2

    Hiroshi Watanabe, George Hasegawa, Hirofumi Akamatsu, Kotaro Fujii, Masatomo Yashima, Miki Inada, Katsuro Hayashi

    5th SCI workshop  2018.9 

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  • Exploration of novel ferroelectric layered perovskite oxides by first-principles calculations

    Yuya Shirai, Hirofumi Akamatsu, George Hasegawa, Katsuro Hayashi

    5th SCI workshop  2018.9 

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  • Self-Standing Na3V2(PO4)3 Ceramic Sheet Prepared with Sintering Aid of Na2O-Nb2O5-P2O5 Glass for All Solid State Battery

    He Wang, George Hasegawa, Yuto Akiyama, Hirofumi Akamatsu, Miki Inada, Katsuro Hayashi

    5th SCI workshop  2018.9 

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  • Preparation and Electrochemical Properties of Na3V2(PO4)3 Ceramic Sheet

    He Wang, George Hasegawa, Yuto Akiyama, Hirofumi Akamatsu, Katsuro Hayashi

    2018.12 

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  • Preparation and Electrochemical Properties of Na3V2(PO4)3 Ceramic Sheet

    He Wang, George Hasegawa, Yuto Akiyama, Hirofumi Akamatsu, Katsuro Hayashi

    2018.12 

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  • 密度半関数理論によるルドルスデン-ポッパー層状酸化物強誘電体の探索

    白井 佑弥

    第28回日本MRS年次大会  2018.12 

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    Venue:北九州国際会議場   Country:Other  

  • 密度半関数理論によるルドルスデン-ポッパー層状酸化物強誘電体の探索

    白井 佑弥, 赤松 寛文, 長谷川 丈二, 林 克郎

    第28回日本MRS年次大会  2018.12 

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  • ニオブ酸リチウム構造をもつLiMF3(M = Fe, Co)のトポケミカル合成

    北角 将晃, 赤松 寛文, 長谷川 丈二, 林 克郎

    新学術複合アニオン第5回若手スクール  2019.1 

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    Venue:関西セミナーハウス   Country:Other  

  • Na+イオン二次電池用NASICON型複合アニオン正極材料の探索

    佐々木 直哉, 長谷川 丈二, 赤松 寛文, 林 克郎

    新学術複合アニオン第5回若手スクール  2019.1 

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    Venue:関西セミナーハウス   Country:Other  

  • ニオブ酸リチウム構造をもつLiMF3(M = Fe, Co)のトポケミカル合成

    北角 将晃, 赤松 寛文, 長谷川 丈二, 林 克郎

    新学術複合アニオン第5回若手スクール  2019.1 

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  • 層状ペロブスカイト Ca3Ti2O7への水素化物イオンドーピング

    岸本 和久, 赤松 寛文, 長谷川 丈二, 林 克郎

    セラミックス協会2019年年会  2019.3 

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    Venue:工学院大学新宿キャンパス   Country:Other  

  • 水熱法による層状リン酸ニオブ化合物の合成と剥離

    吉田 雄一郎, 長谷川 丈二, 赤松 寛文, 林 克郎

    セラミックス協会2019年年会  2019.3 

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    Venue:工学院大学新宿キャンパス   Country:Other  

  • 水熱法による層状リン酸ニオブ化合物の合成と剥離

    吉田 雄一郎, 長谷川 丈二, 赤松 寛文, 林 克郎

    セラミックス協会2019年年会  2019.3 

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  • 層状ペロブスカイト Ca3Ti2O7への水素化物イオンドーピング

    岸本 和久, 赤松 寛文, 長谷川 丈二, 林 克郎

    セラミックス協会2019年年会  2019.3 

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    Country:Other  

  • Preparation of Crystalline Na3V2(PO4)3 by Glass-Ceramic Process

    Sai Niu, Hirofumi Akamatsu, Yuto Akiyama, George Hasegawa, Katsuro Hayashi

    2019.3 

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  • Preparation of Crystalline Na3V2(PO4)3 by Glass-Ceramic Process

    Sai Niu, Hirofumi Akamatsu, Yuto Akiyama, George Hasegawa, Katsuro Hayashi

    2019.3 

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  • チオール化合物を硫黄源とする硫化コバルトナノ粒子の作製

    松川 祐子, 長谷川 丈二, 赤松 寛文, 林 克郎

    新学術複合アニオン第6回若手スクール  2019.5 

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    Language:Others  

    Venue:北海道大学フロンティア応用科学研究棟   Country:Other  

  • 水熱法による層状リン酸ニオブ化合物の合成と剥離

    吉田 雄一郎, 長谷川 丈二, 赤松 寛文, 林 克郎

    新学術複合アニオン第6回若手スクール  2019.5 

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    Venue:北海道大学フロンティア応用科学研究棟   Country:Other  

  • 結晶相転移誘起相分離を利用した多孔質メソクリスタルの作製

    大田黒 光, 長谷川 丈二, 赤松 寛文, 林 克郎

    新学術複合アニオン第6回若手スクール  2019.5 

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    Venue:北海道大学フロンティア応用科学研究棟   Country:Other  

  • 単純ペロブスカイト BaM1?xYxO3?x/2 (M=Zr,Sn,Ce)における固相還元の効果

    小川 雄也, 林 克郎, 長谷川 丈二, 赤松 寛文, 渡部 寛, 藤井 孝太郎, 八島 正知, 松石 聡

    新学術複合アニオン第6回若手スクール  2019.5 

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    Venue:北海道大学フロンティア応用科学研究棟   Country:Other  

  • Hydride ions and oxygen vacancies in severely-reduced primitive cubic perovskites

    Katsuro Hayashi, Hiroshi Watanabe, Hirofumi Akamatsu, George Hasegawa

    E-MRS 2019 Spring Meeting  2019.5 

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  • ハイドロガーネットを前駆体としたメソポラスSrFeOxの作成

    大田黒 光, 長谷川 丈二, 赤松 博文, 林 克郎

    日本ゾル-ゲル学会第17回討論会  2019.8 

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    Venue:東京理科大学 葛飾キャンパス 図書館ホール   Country:Other  

  • Synthesis of Mesoporous SrFeOx Particles from Hydrogarnet Precursor

    Hikaru Otaguro, George Hasegawa, Hirofumi Akamatsu, Katsuro Hayashi

    PACRIM13  2019.10 

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  • Metal-Hydride Reduction of Primitive Perovskites BaM1?xYxO3?x/2 (M = Zr, Sn, Ce)

    Yuya Ogawa, George Hasegawa, Hirofumi Akamatsu, Kotaro Fujii, Masatomo Yashima, Miki Inada, Satoru Matsuishi, Katsuro Hayashi

    PACRIM13  2019.10 

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  • Electrical Conductivity of OlivineType MgMSiO4

    Nanami Ikeda, George Hasegawa, Hirofumi Akamatsu, Katsuro Hayashi

    PACRIM13  2019.10 

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  • Preparation of Oxide-Based Na Ion Battery by Tape-Casting Laminate NASICON-type Ceramics

    Takehiro Kashihara, George Hasegawa, Hirofumi Akamatsu, Katsuro Hayashi

    PACRIM13  2019.10 

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  • Fabrication of NASICON-type All-Solid-State Sodium-Ion Batteries

    Naoya Sasaki, George Hasegawa, Hirofumi Akamatsu, Katsuro Hayashi

    PACRIM13  2019.10 

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    Country:Other  

  • Synthesis and Physical Properties of Carrier-doped Layered Perovskite Ca3Ti2O7

    Kazuhisa Kishimoto, Hirofumi Akamatsu, George Hasegawa, Katsuro Hayashi

    PACRIM13  2019.10 

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    Country:Other  

  • Topochemical Synthesis and Structural Analysis of Lithium Niobate-Type Fluorides

    Masahiro Kitakado, Hirofumi Akamatsu, George Hasegawa, Katsuro Hayashi

    PACRIM13  2019.10 

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  • Hydrothermal Synthesis of layered Niobium Phosphates and delaminated

    Yuichiro Yoshida, George Hasegawa, Hirofumi Akamatsu, Katsuro Hayashi

    PACRIM13  2019.10 

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  • Synthesis, Morphology and Crystallography of Cobalt Thiolates Nanoparticles

    Yuko Matsukawa, George Hasegawa, Hirofumi Akamatsu, Katsuro Hayashi

    PACRIM13  2019.10 

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  • Sai Niu, Hirofumi Akamatsu, Yuto Akiyama, George Hasegawa, Katsuro Hayashi

    Sai Niu, Hirofumi Akamatsu, Yuto Akiyama, George Hasegawa, Katsuro Hayashi

    PACRIM13  2019.10 

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    Country:Other  

  • 遷移金属チオラートを前駆体とする硫化物ナノ粒子の作製

    松川 祐子, 長谷川 丈二, 赤松 寛文, 林 克郎

    新学術複合アニオン第8回若手スクール  2020.1 

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    Language:Others  

    Venue:物質・材料研究機構 並木地区   Country:Other  

  • スピノーダル分解を利用した共連続ポリイミドゲルの作製と低密度化

    指山 雄太郎, 長谷川 丈二, 赤松 寛文, 林 克郎

    新学術複合アニオン第8回若手スクール  2020.1 

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    Venue:物質・材料研究機構 並木地区   Country:Other  

  • 単純ペロブスカイトBaM1-xYxO3-x/2 (M = Zr, Sn, Ce)における固相還元の効果

    小川 雄也, 長谷川 丈二, 赤松 寛文, 藤井 孝太郎, 八島 正知, 林 克郎

    新学術複合アニオン第8回若手スクール  2020.1 

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    Language:Others  

    Venue:物質・材料研究機構 並木地区   Country:Other  

  • テープキャスト膜共焼成全ナシコン系ナトリウムイオン電池の作成

    柏原 健宏, 赤松 寛文, 林 克郎

    セラミックス協会2020年年会  2020.3 

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    Venue:明治大学 駿河台キャンパス   Country:Other  

  • SPS 法によるオリビン型 Mg 系正極材料の作製と電気特性評価

    池田 七海, 林 克郎, 赤松 寛文, (名古屋大学) 長谷川 丈二

    セラミックス協会2020年年会  2020.3 

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    Venue:明治大学 駿河台キャンパス   Country:Other  

  • ニッケルチオラートを前駆体とする硫化ニッケルナノ粒子の作製

    松川 祐子, (名古屋大学) 長谷川 丈二, (九州大学) 赤松 寛文, 大谷 亮, 林 克郎

    セラミックス協会2020年年会  2020.3 

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    Venue:明治大学 駿河台キャンパス   Country:Other  

  • 熱分解誘起相分離を利用した多孔質 SrFeO3?δ 多面体粒子の作製

    大田黒 光, 林 克郎, 赤松 寛文, (名古屋大学) 長 谷川 丈二

    セラミックス協会2020年年会  2020.3 

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    Venue:明治大学 駿河台キャンパス   Country:Other  

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MISC

  • 有田焼の歴史と今にふれて―佐賀県立九州陶磁文化館を訪れて― Reviewed

    赤松寛文

    セラミックス   2023.7

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    Language:Japanese  

  • 新規圧電体NaRTiO₄(Rは希土類) : 非鉛系圧電材料開発への新しいアプローチ (特集 超音波を使用した環境保全の探求)

    田中 勝久, 藤田 晃司, 赤松 寛文

    超音波techno   2015.1

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    Language:Japanese  

Professional Memberships

  • The Ceramic Society of Japan

  • The Japan Institute of Metals and Materials

  • The Dielectric Society of Japan

  • The Chemical Society of Japan

Academic Activities

  • Screening of academic papers

    Role(s): Peer review

    2023

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:7

    Number of peer-reviewed articles in Japanese journals:28

  • Screening of academic papers

    Role(s): Peer review

    2022

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:14

    Number of peer-reviewed articles in Japanese journals:22

  • Screening of academic papers

    Role(s): Peer review

    2021

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:5

    Number of peer-reviewed articles in Japanese journals:9

  • セラミックス協会誌「セラミックス」

    2020.4 - 2022.3

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    Type:Academic society, research group, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2020

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:4

  • Screening of academic papers

    Role(s): Peer review

    2019

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:4

  • Screening of academic papers

    Role(s): Peer review

    2018

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:4

  • Screening of academic papers

    Role(s): Peer review

    2017

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:3

    Number of peer-reviewed articles in Japanese journals:0

    Proceedings of International Conference Number of peer-reviewed papers:0

    Proceedings of domestic conference Number of peer-reviewed papers:0

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Research Projects

  • 層間侵入アニオンによる層状ペロブスカイト酸化物の配位八面体回転制御と強誘電体化

    Grant number:23H01869  2023 - 2025

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 紫外-近赤外光電変換に向けたポーラー層状ペロブスカイト材料の創製

    Grant number:21K19027  2021 - 2022

    日本学術振興会  科学研究費助成事業  挑戦的研究(萌芽)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 層状ペロブスカイトの層間侵入アニオンが形成する超秩序構造の解明と電気的秩序の制御

    Grant number:21H05568  2021 - 2022

    日本学術振興会・文部科学省  科学研究費助成事業  学術変革領域研究(A)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 村田学術財団研究助成金

    2021

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    Grant type:Donation

  • 理論と実験の結合による新規反強誘電性層状酸化物の開拓と結晶化学的チューニング

    Grant number:18H01892  2018 - 2021

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 第一原理計算によるポーラーメタル物質の探索

    Grant number:17K19172  2017 - 2018

    日本学術振興会  科学研究費助成事業  挑戦的研究(萌芽)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 酸素配位八面体回転を活用した圧電・強誘電体材料の設計と第一原理計算による材料探索

    Grant number:16H06793  2016 - 2017

    日本学術振興会  科学研究費助成事業  研究活動スタート支援

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 村田学術財団研究助成金

    2016

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    Grant type:Donation

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Class subject

  • 物理化学第三

    2023.6 - 2023.8   Summer quarter

  • 安全学

    2023.4 - 2023.9   First semester

  • Inorganic Chemistry I

    2023.4 - 2023.6   Spring quarter

  • 無機物質化学Ⅰ

    2023.4 - 2023.6   Spring quarter

  • セラミック材料物性学

    2022.10 - 2023.3   Second semester

  • 物理化学第三

    2022.6 - 2022.8   Summer quarter

  • セラミック工学

    2022.4 - 2022.9   First semester

  • 無機物質化学I

    2022.4 - 2022.6   Spring quarter

  • Inorganic Chemistry I

    2022.4 - 2022.6   Spring quarter

  • 無機化学第三

    2021.10 - 2022.3   Second semester

  • 物理化学第三

    2021.6 - 2021.8   Summer quarter

  • Inorganic Chemistry I

    2021.4 - 2021.6   Spring quarter

  • 無機物質化学I

    2021.4 - 2021.6   Spring quarter

  • セラミック材料物性学

    2020.10 - 2021.3   Second semester

  • 無機化学第三

    2020.10 - 2021.3   Second semester

  • 物理化学第三

    2020.6 - 2020.8   Summer quarter

  • Experiment in Applied Chemistry II

    2020.4 - 2020.9   First semester

  • 無機物質化学

    2020.4 - 2020.9   First semester

  • Inorganic Chemistry I

    2020.4 - 2020.9   First semester

  • セラミック工学

    2020.4 - 2020.9   First semester

  • 学術英語3

    2019.10 - 2020.3   Second semester

  • 物質科学工学実験第三

    2019.10 - 2020.3   Second semester

  • 物質科学工学実験第一

    2019.10 - 2020.3   Second semester

  • 無機化学第三

    2019.10 - 2019.12   Fall quarter

  • 物理化学第三

    2019.6 - 2019.8   Summer quarter

  • Inorganic Chemistry A

    2019.4 - 2019.9   First semester

  • 無機物質化学

    2019.4 - 2019.9   First semester

  • セラミック材料物性学

    2018.10 - 2019.3   Second semester

  • セラミック材料物性学

    2018.10 - 2019.3   Second semester

  • Materials Properties of Ceramics

    2018.10 - 2019.3   Second semester

  • Inorganic Chemistry A

    2018.4 - 2018.9   First semester

  • 物理化学第三

    2018.4 - 2018.9   First semester

  • 無機化学第三

    2018.4 - 2018.9   First semester

  • セラミック材料物性学

    2018.4 - 2018.9   First semester

  • セラミック工学

    2018.4 - 2018.9   First semester

  • 無機物質化学

    2018.4 - 2018.9   First semester

  • 課題協学

    2017.10 - 2018.3   Second semester

  • 無機化学第三

    2017.4 - 2017.9   First semester

  • 物理化学第三

    2017.4 - 2017.9   First semester

  • Inorganic Chemistry A

    2017.4 - 2017.9   First semester

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FD Participation

  • 2020.4   Role:Participation   Title:Moodleを利用したe-Learning実例報告(九州大学電気情報において)

  • 2018.1   Role:Participation   Title:M2B(みつば)学習支援システム講習会および研究分析ツール「SciVal」及び研究者プロファイリングツール「Pure」に関する説明会(応用編)

  • 2017.4   Role:Participation   Title:課題協学科目担当教員FD

  • 2017.4   Role:Participation   Title:平成29年度第1回全学FD(新任教員の研修)

Visiting, concurrent, or part-time lecturers at other universities, institutions, etc.

  • 2023  東京工業大学  Classification:Affiliate faculty  Domestic/International Classification:Japan 

  • 2022  東京工業大学  Classification:Affiliate faculty  Domestic/International Classification:Japan 

  • 2021  東京工業大学  Classification:Affiliate faculty  Domestic/International Classification:Japan 

  • 2020  東京工業大学  Classification:Affiliate faculty  Domestic/International Classification:Japan 

  • 2019  東京工業大学  Classification:Affiliate faculty  Domestic/International Classification:Japan 

  • 2018  東京工業大学  Classification:Affiliate faculty  Domestic/International Classification:Japan 

  • 2017  東京工業大学  Classification:Affiliate faculty  Domestic/International Classification:Japan 

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