Faculty Profiles - KUROKAWA YUICHIRO

Information

写真a

KUROKAWA YUICHIRO

Organization

Faculty of Information Science and Electrical Engineering Department of Electronics Assistant Professor
Graduate School of Information Science and Electrical Engineering Department of Electrical and Electronic Engineering（Concurrent）
School of Engineering Department of Electrical Engineering and Computer Science（Concurrent）

Profile

磁壁移動メモリをはじめとしたスピントロニクスのデバイス応用を研究している。教育では、学部生の学生実験を担当している他、研究室における活動として、修士研究指導、学士卒業研究指導に取り組んでいる。

Homepage

http://mag.ed.kyushu-u.ac.jp/indexE.html

External link

Research Areas

Nanotechnology/Materials / Nanostructural physics
Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment

Degree

Ph. D. in Engineering

Research Interests・Research Keywords

Research theme： Fabrication process for device using inkjet print

Keyword：インクジェット印刷

Research period： 2023.4 - Present
Research theme： Spin seebeck effect based on magnetic nanoparticles

Keyword： Spintronics, Thermoelectric conversion

Research period： 2019.4 - Present
Research theme： Investigation of magnetic domain wall memory Investigation of spin logic

Keyword： spintronics

Research period： 2017.4 - Present

Awards

マグネティックス技術委員会研究奨励賞

2019.3 電気学会平成２９年開催のマグネティックス研究会における希土類磁性細線の電流誘起磁壁移動の熱効果に関する研究発表が特に優秀であると認められたため

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We investigated the current-induced domain wall motion (CIDWM) in Pt (3 nm)/TbCo (6 nm) alloy wire at various temperatures (T). The threshold current density (Jth) for the CIDWM in the Tb-Co alloy wire was drastically decreased as T was increased. Particularly, at T = 343 K, Jth was almost 7 times lower than that at room temperature. The reduction in Jth can be attributed to thermally activated creep motion and a reduction in the depinning current density. These results indicate that devices using CIDWM can be thermally assisted.

Papers

Inkjet‐Printed Flexible Spin Seebeck Thermopile Device for Low‐Cost Spintronics Device Fabrication Reviewed International journal

Yuichiro Kurokawa, @Keisuke Yamada, Hiromi Yuasa

Advanced Engineering Materials 2024.1

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Spin-momentum-mediated heat–charge conversion technologies for developing thin thermoelectric generators and heat flow sensors have been extensively studied. The thermoelectric generation (TEG) based on the spin Seebeck (SSE) effect is a promising technology. In this study, a flexible SSE thermopile device is fabricated using inkjet printing with Fe3O4 and Ag nanoparticle (NP) ink. A square Fe3O4 NP and a wire-shaped Ag NP layer are used as the first and second layers, respectively. These layers are overlaid using inkjet printing twice. To obtain the SSE voltage (VSSE), a thin Pt film is deposited on a printed thermopile device. SSE generators consisting of a Pt thin film/Fe3O4 NP layer are connected through a Ag NP wire to form a thermopile structure. The saturated VSSE of the SSE thermopile device increases with the number of SSE generators. In addition, the SSE-TEG of an SSE thermopile device is observed using a heat source with a curved surface. In these results, it is indicated that the inkjet-printing fabrication method holds great potential in both the SSE thermopile devices and the flexible spintronic devices because it is a simple and fast process that does not require lithography.

DOI： https://doi.org/10.1002/adem.202301069
Scalable spin Seebeck thermoelectric generation using Fe-oxide nanoparticle assembled film on flexible substrate Reviewed International journal

Yuichiro Kurokawa, @Yusuke Tahara, #Yuki Hamada, #Masahiro Fujimoto, Hiromi Yuasa

Scientific Reports 2022.10

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Ultra-wide-band millimeter-wave generator using spin torque oscillator with strong interlayer exchange couplings Reviewed International journal

Yuichiro Kurokawa, @Keisuke Yamada, @Tomohiro Taniguchi, #Shu Horiike, Terumitsu Tanaka, Hiromi Yuasa

Scientific Reports 2022.7

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Recent increased development interest in millimeter-wave oscillator devices has necessitated realization of small oscillators with high frequency, wide frequency tunability, and room-temperature operation. Spin-torque oscillators (STOs) are fascinating candidates for such applications because of their nanometer size and suitability for room-temperature operation. However, their oscillation frequency and tunable range are limited to the order of 100 MHz–10 GHz. Here, we propose use of bilinear (J1) and biquadratic (J2) interlayer exchange couplings between ferromagnets in STOs to overcome these problems. The bilinear coupling contributes to oscillation frequency enhancement, whereas the biquadratic coupling facilitates frequency tunability via a current. Using micromagnetic simulation with parameters estimated from a material with small saturation magnetization, for J1 = 0 and J2 = − 1.0 mJ/m^2, respectively, we find that the STO exhibits high frequency from 23 to 576 GHz and that its tunability reaches 61 GHz/(10^11 A/m^2) for current densities of − 0.5 to − 9.5 × 10^11 A/m^2. An analytical theory based on the macrospin model is also developed, which exhibits good quantitative agreement with the micromagnetic simulations. These results introduce new possibilities for spintronics applications in high-frequency devices such as next-generation mobile communications.
Interfacial Dzyaloshinskii-Moriya interaction and chiral magnetic textures in a ferrimagnetic insulator Reviewed International journal

@Shilei Ding, @Andrew Ross, @Romain Lebrun, @Sven Becker, @Kyujoon Lee, @Isabella Boventer, @Souvik Das, @Yuichiro Kurokawa, @Shruti Gupta, @Jinbo Yang, @Gerhard Jakob, and @Mathias Kläui

PHYSICAL REVIEW B 100 100406(R) 2019.9

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The interfacial Dzyaloshinskii-Moriya interaction (DMI) in multilayers of heavy metal and ferromagnetic metals enables the stabilization of novel chiral spin structures such as skyrmions. Magnetic insulators, on the other hand, can exhibit enhanced dynamics and properties such as lower magnetic damping and therefore it is of interest to combine the properties enabled by interfacial DMI with insulating systems. Here, we demonstrate the presence of interfacial DMI in heterostructures that include insulating magnetic layers. We use perpendicularly magnetized insulating thulium iron garnet (TmIG) films capped by the heavy metal platinum, grown on gadolinium gallium garnet (GGG) substrates, and find a surprisingly strong interfacial DMI that, combined with spin-orbit torque, results in efficient switching. The interfacial origin is confirmed through thickness-dependence measurements of the DMI, revealing the characteristic 1/thickness dependence. We combine chiral spin structures and spin-orbit torques for efficient switching and identify skyrmions that allow us to establish the GGG/TmIG interface as the possible origin of the DMI.

DOI： https://doi.org/10.1103/PhysRevB.100.100406
Spin-orbit torque-driven current-induced domain wall motion in Gd-Fe magnetic wires Reviewed International journal

@Yuichiro Kurokawa, #Masakazu Wakae, @Satoshi Sumi, @Hiroyuki Awano, @Kohei Ohnishi, @Hiromi Yuasa

Japanese Journal of Applied Physics 58 ( 3 ) 2019.3

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We fabricated Gd-Fe/Ta/sub. and W/Gd-Fe/Ta/sub. perpendicular magnetized magnetic wires and investigated current-induced domain wall motion (CIDWM) in them. The propagation field of the Gd-Fe wires is low (∼3 mT), and the wires were found to have a low threshold current density (∼3.1 ×10¹⁰ A m^-2) of CIDWM. The directions of the CIDWM in Gd-Fe/Ta and W/Gd-Fe/Ta wires are opposite to each other, indicating that the CIDWM in both wires is driven by spin-orbit torque because the spin Hall torque generated by the Ta underlayer and W cap layer oppose each other.

DOI： 10.7567/1347-4065/aafa91
Observation of spin-orbit torque-induced magnetization switching in Gd-Fe perpendicular magnetized wire with in-plane exchange bias field Reviewed International journal

#Masakazu Wakae, @Yuichiro Kurokawa, @Hiromi Yuasa

Japanese Journal of Applied Physics 58 2019.1

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We fabricated a Ta/Gd-Fe/Ta and a Ta/Gd-Fe/Ir₂₂Mn₇₈/Co₉₀Fe₁₀/Ta multilayered magnetic wire and investigated spin-orbit torque current-induced magnetization switching in these wires. Magnetization switching in the Ta/Gd-Fe/Ir₂₂Mn₇₈/Co₉₀Fe₁₀/Ta multilayered magnetic wire can be observed by an electric current even if the external in-plane magnetic field is not applied at all. Moreover, we successfully observed the periodical magnetization switching in the Ta/Gd-Fe/Ir₂₂Mn₇₈/Co₉₀Fe₁₀/Ta multilayered magnetic wire in zero magnetic field. This indicates that the present wire is a promising material to realize magnetic random access memory with low power consumption.

DOI： 10.7567/1347-4065/aaf877
Multilayered current-induced domain wall motion in Pt/Tb-Co/Ta/Tb-Co/Pt magnetic wire Reviewed International journal

@Yuichiro Kurokawa, @Hiroyuki Awano

AIP ADVANCES 8 ( 2 ) 2018.2

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We fabricated a Pt (3 nm)/Tb0.28Co0.72 (4 nm)/Ta (4 nm)/Tb0.26Co0.74 (4 nm)/Pt
(3 nm) multilayered magnetic wire and investigated current-induced domain wall
motion within it.We found that the Hall resistance of the Pt/Tb-Co/Ta/Tb-Co/Pt wire
has four stable levels under a magnetic field of zero. Moreover, we observed that the
domain walls in both the upper and lower ferromagnetic layers are controlled by a
single current source. This indicates that Pt/Tb-Co/Ta/Tb-Co/Pt wire can be used in
multi-level magnetic wire memory.

DOI： 10.1063/1.5017814
Enhancement of spin orbit torques in a Tb-Co alloy magnetic wire by controlling its Tb composition Reviewed International journal

@Yuichiro Kurokawa, @Akihiro Shibata, @Hiroyuki Awano

AIP ADVANCES 7 ( 5 ) 2017.5

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DOI： 10.1063/1.4974280
Thermal reduction of the threshold current density for current-induced domain wall motion in Tb-Co magnetic alloy wire Reviewed International journal

Yuichiro Kurokawa, @Ryogo Yoshimura, @Satoshi Sumi, @Hiroyuki Awano

AIP ADVANCES 7 ( 3 ) 2017.3

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DOI： 10.1063/1.4979727
Current-induced domain wall motion attributed to spin Hall effect and Dzyaloshinsky-Moriya interaction in Pt/GdFeCo (100 nm) magnetic wire Reviewed International journal

@Yuichiro Kurokawa, @Masaya Kawamoto, @Hiroyuki Awano

JAPANESE JOURNAL OF APPLIED PHYSICS 55 ( 7 ) 2016.7

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DOI： 10.7567/JJAP.55.07MC02
Critical field of two-dimensional superconducting Sn_1-x/Si _x bimetallic composite cluster assembled films with energetic cluster impact deposition Reviewed

Yuichiro Kurokawa, Takehiko Hihara, Ikuo Ichinose

Journal of Applied Physics 113 ( 17 ) 2013.5

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DOI： 10.1063/1.4798262
Computational study of skyrmion stability and transport on W/CoFeB Reviewed

Tsz Chung Cheng, Lin Zhang, Yuichiro Kurokawa, Ryuta Satone, Kazuhiko Tokunaga, Hiromi Yuasa

Scientific Reports 15 ( 1 ) 7708 2025.3

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DOI： https://doi.org/10.1038/s41598-025-91415-z
All chemically fabricated Co-Pt nanoparticle spin thermoelectric generator on plastic sheet Reviewed

Yuichiro Kurokawa, Keisuke Yamada , Kenji Tanabe , Hideki Matsui , Hiromi Yuasa

Next Materials 8 100520 2025.2

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Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)

DOI： https://doi.org/10.1016/j.nxmate.2025.100520
High spin-orbit torque efficiency in Pt/Co/Tb/W repetition structure with broken spatial inversion symmetry Reviewed

Kazuhiko Tokunaga, Yuichiro Kurokawa, Lin Zhang, Hiromi Yuasa

Journal of Physics D: Applied Physics 58 135004 2025.1

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DOI： 10.1088/1361-6463/adaf38
Bipolar transverse thermopower and low thermal conductivity for an anomalous Nernst-type heat flux sensor in GdCo alloys Reviewed International journal

Miho Odagiri, Hiroto Imaeda, Ahmet Yagmur, Yuichiro Kurokawa, Satoshi Sumi, Hiroyuki Awano, Kenji Tanabe

Scientific Reports 14 ( 1 ) 17205 2024.7

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DOI： https://doi.org/10.1038/s41598-024-67929-3
Coexistence of large anomalous Nernst effect and large coercive force in amorphous ferrimagnetic TbCo alloy films Reviewed International journal

Miho Odagiri, Hiroto Imaeda, Ahmet Yagmur, Yuichiro Kurokawa, Satoshi Sumi, Hiroyuki Awano, Kenji Tanabe

Applied Physics Letters 2024.4

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DOI： https://doi.org/10.1063/5.0196720
Biquadratic magnetic coupling effect in CoPt/Cr/Fe90Co10 orthogonal structures Reviewed International journal

#C Liu, Y Kurokawa, #N Hashimoto, T Tanaka, H Yuasa

Japanese Journal of Applied Physics 2024.1

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DOI： 10.35848/1347-4065/ad0e28
Inversion symmetry breaking in spin–orbit torque-induced magnetization switching to improve the recording density of multi-level magnetoresistive random-access memory Reviewed International journal

#U. Kamihoki, Y. Kurokawa, #M. Fujimoto, H. Yuasa

Journal of Applied Physics 133 143902 2023.4

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High-frequency spin torque oscillation in orthogonal magnetization disks with strong biquadratic magnetic coupling Reviewed International journal

#C. Liu, Y. Kurokawa, #N. Hashimoto, T. Tanaka, H. Yuasa

Scientific Reports 12 10849 2023.3

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Operating characteristics of domain walls in perpendicularly magnetized ferrimagnetic cylindrical nano-wires for three-dimensional magnetic memory Reviewed International journal

Yuichiro Kurokawa, Hiromi Yuasa

Japanese Journal of Applied Physics 62 SC1070 2023.2

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Sensitivity and reproducibility of transverse magneto-optical Kerr effect (T-MOKE) ellipsometry Reviewed International journal

@Carmen Martín Valderrama, @Mikel Quintana, @Ane Martínez-de-Guerenu, #Tomoki Yamauchi, #Yuki Hamada, Yuichiro Kurokawa, Hiromi Yuasa, @Andreas Berger

Journal of Physics D: Applied Physics 2022.8

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Inactivation of damping-like torque in Tb-Gd-Fe film on Ta layer Reviewed International journal

Yuichiro Kurokawa, #Masahiro Itoh, #Masakazu Wakae, #Masahiro Fujimoto, #Uraku Kamihoki, Hiromi Yuasa

Japanese Journal of Applied Physics 61 SC1025 2022.2

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DOI： https://doi.org/10.35848/1347-4065/ac3fcb
Anomalous Nernst effect dependence on composition in Fe100− X Rh X alloys Reviewed International journal

#Tomoki Yamauchi, #Yuki Hamada, Yuichiro Kurokawa, Hiromi Yuasa

Japanese Journal of Applied Physics 61 SC1019 2022.2

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DOI： https://doi.org/10.35848/1347-4065/ac3ef1
Anomalous Nernst effect in Fe–Si alloy films Reviewed International journal

#Yuki Hamada, Yuichiro Kurokawa, #Tomoki Yamauchi, #Hiroki Hanamoto, and Hiromi Yuasa

Appl. Phys. Lett. 119 2021.10

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

DOI： 10.1063/5.0062637
Insertion layer magnetism detection and analysis using transverse magneto-optical Kerr effect (T-MOKE) ellipsometry Reviewed International journal

@Carmen Martín Valderrama, @Mikel Quintana, @Ane Martínez de Guereñu, #Tomoki Yamauchi, #Yuki Hamada, Yuichiro Kurokawa, Hiromi Yuasa, @Andreas Berger

Journal of Physics D: Applied Physics 54 2021.6

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DOI： https://doi.org/10.1088/1361-6463/ac0d2a
Spin Transfer Torque Oscillation in Orthogonal Magnetization Disks Reviewed International journal

#Chuhan Liu, Yuichiro Kurokawa, #Naoki Hashimoto, #Shu Horiike, Terumitsu Tanaka, Hiromi Yuasa

IEEE Transactions on Magnetics 2021.5

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DOI： 10.1109/TMAG.2021.3084608
Change of longitudinal spin Seebeck voltage with annealing in Y₃Fe₅O₁₂ films formed by densely packed nanocrystals Reviewed International journal

@Keisuke Yamada, @Shinya Masaki, @Mikiya Yamamoto, @Keita Kondo, Yuichiro Kurokawa, @Yoichi Shiota, @Takahiro Moriyama, @Teruo Ono, Hiromi Yuasa, @Mutsuhiro Shima

Journal of Magnetism and Magnetic Materials 535 168093 2021.5

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DOI： https://doi.org/10.1016/j.jmmm.2021.168093
Direct observation of magnetic process in quasi-antiferromagnet by high-resolution Kerr microscopy Reviewed International journal

#Naoki Hashimoto, #Shuu Horiike, Yuichiro Kurokawa, Terumitsu Tanaka, @Po-Chun Chang, @Wen-Chin Lin, Hiromi Yuasa

Japanese Journal of Applied Physics 60 SBBI05 2021.3

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DOI： https://doi.org/10.35848/1347-4065/abe5c2
Influence of interface layer insertion on the spin Seebeck effect and the spin Hall magnetoresistance of Y₃Fe₅O₁₂/Pt bilayer systems Reviewed International journal

#Takumi Niimura, @Yuichiro Kurokawa, #Shu Horiike, #Houlin Li, #Hiroki Hanamoto, @Ramon Weber, @Andreas Berger, and @Hiromi Yuasa

PHYSICAL REVIEW B 102 2020.9

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We observe significantly enhanced spin Seebeck effect (SSE) and spin Hall magnetoresistance (SMR) values by inserting 0.3–0.6-nm-thick layers of magnetic materials with different composition (Cr, Ni80Fe20, Co90Fe10, Fe50Co50, and Fe) at the Y3Fe5O12/Pt interface. To study the actual magnetic state of these insertion layers, we, then, investigated the magnetization of these layers via generalized magneto-optical ellipsometry. Magnetic insertion layers in this thickness range did not exhibit a measurable magnetization, even though our method should have detected even a small fraction of the bulk magnetization value for the utilized materials easily. Therefore, the observed SSE and SMR enhancement generated by the insertion of thin magnetic material layers did not result from a net interface magnetization but might, instead, be related to the paramagnetic state of the inserted layers.

DOI： https://doi.org/10.1103/PhysRevB.102.094411
Composition dependence of spin Seebeck voltage in YIG/Pt_100-XRu_X, Pt_100-XCu_X, and Pt_100-X(Cu_0.5Ru_0.5)_X Reviewed International journal

#Houlin Li, @Yuichiro Kurokawa, #Takumi Niimura, #Tomoki Yamauchi, @Hiromi Yuasa

Japanese journal of applied physics 59 ( 7 ) 2020.7

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DOI： 10.35848/1347-4065/ab9653
Magnetic dynamics of quasi-Antiferromagnetic layer fabricated by 90° magnetic coupling Reviewed International journal

#Shuu Horiike, #Gen Nagashima, @Yuichiro Kurokawa, #Yongshi Zhong, @Kazuto Yamanoi, @Terumitsu Tanaka, @Kimihide Matsuyama, @Hiromi Yuasa

Japanese journal of applied physics 59 ( SG ) SGGI02 2020.4

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DOI： 10.7567/1347-4065/ab5d62
Determination of fine magnetic structure of magnetic multilayer with quasi antiferromagnetic layer by using polarized neutron reflectivity analysis Reviewed International journal

#Yongshi Zhong, @Yuichiro Kurokawa, #Gen Nagashima, #Shu Horiike, @Takayasu Hanashima, @Daniel Schönke, @Pascal Krautscheid, @Robert M. Reeve, @Mathias Kläui, @Hiromi Yuasa

AIP Advances 10 ( 1 ) 015323 2020.1

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DOI： 10.1063/1.5130445
Quasi-antiferromagnetic multilayer stacks with 90 degree coupling mediated by thin Fe oxide spacers Reviewed International journal

#Gen Nagashima, @Yuichiro Kurokawa, #Yongshi Zhong, #Shuu Horiike, @Daniel Schönke, @Pascal Krautscheid, @Robert M. Reeve, @Mathias Kläui, @Yuji Inagaki, @Tatsuya Kawae, @Terumitsu Tanaka, @Kimihide Matsuyama, @Kohei Ohnishi, @Takashi Kimura, @Hiromi Yuasa

Journal of Applied Physics 126 ( 9 ) 093901 2019.9

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DOI： 10.1063/1.5117869
Observation of longitudinal spin seebeck voltage in YIG films chemically prepared by co-precipitation and spin coating Reviewed International journal

@Keisuke Yamada, @Yuichiro Kurokawa, @Kazuma Kogiso, @Hiromi Yuasa, @Mutsuhiro Shima

IEEE Transactions on Magnetics 55 ( 2 ) 2019.2

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Longitudinal spin Seebeck effect (LSSE) of Y₃Fe₅O₁₂ (YIG) thin films chemically prepared on a Si substrate with a SiO₂ surface layer has been investigated with a particular focus on its dependence on the metal (Pt or W) for the capping layer used to carry out the measurements. The YIG films are prepared by a combination of co-precipitation, spin coating, and annealing processes. The structural characterization by X-ray diffraction proves that the films are polycrystalline in a garnet phase with an average crystallite size of 34 nm. The microstructural analyses of the film surface by scanning electron microscopy and scanning probe microscopy show that the roughness R_a of the film is 31 nm. The magnetic easy axis of the YIG films is in the direction parallel to the films. We have found that the polarity of the LSSE voltage V_LSSE measured with a Pt capping layer apparently differs from that observed when a W capping layer is used. The value of V_LSSE increases almost linearly with increasing temperature difference Δ T independent of the choice of metal for the capping layer. The observed LSSE for the polycrystalline YIG films is one order of magnitude smaller than that reported for YIG and Bi:YIG single-crystal samples grown by metal-organic decomposition.

DOI： 10.1109/TMAG.2018.2865199
Spin Seebeck voltage enhancement by Mn system metals insertion at the interface between YIG and nonmagnetic layer Reviewed International journal

#Fumiya Nakata, #Takumi Niimura, @Yuichiro Kurokawa, @Hiromi Yuasa

Japanese Journal of Applied Physics 58 2019.1

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The spin Seebeck voltage was successfully increased by IrMn or Mn insertion into the interface Y₃Fe₅O₁₂ and nonmagnetic Pt and TaW with positive and negative spin Hall angle, respectively. The magnitude of the spin Seebeck coefficient |S| of the samples with IrMn and Mn were higher than that with Ru insertion, which indicates that the existence of the magnetic moment is important for the spin Seebeck coefficient. Furthermore, |S| of the samples with IrMn and Mn were higher than oxide antiferromagnetic NiO, which suggests the metallic layer insertion is effective for enlarging |S| owing to the relatively long spin diffusion length. Since the inserted IrMn and NiO take the paramagnetic states as well as Mn, it is supposed that the spin fluctuation in the paramagnetic insertion layers play an important role in enhancing the spin current.

DOI： 10.7567/1347-4065/aafb5c
Magnetic Recording on the RE-TM /Pt Magnetic Wire Deposited on Nano-Imprinted Plastic Substrate Reviewed International journal

@Hiroyuki Awano, @Satoshi Sumi, @Yuichiro Kurokawa, @Do Bang, @Akihiko Moribayashi, @Ryogo Yoshimura, @Tsukasa Asari

2016 International Conference of Asian Union of Magnetics Societies, ICAUMS 2016 2018.10

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Language：English Publishing type：Research paper (international conference proceedings)

DOI： 10.1109/ICAUMS.2016.8479813
Spin Seebeck coefficient enhancement by using Ta50W50 alloy and YIG/Ru interface Reviewed International journal

@Hiromi Yuasa, #Fumiya Nakata, #Ryohei Nakamura, @Yuichiro Kurokawa

JOURNAL OF PHYSICS D-APPLIED PHYSICS 51 ( 13 ) 2018.4

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

DOI： 10.1088/1361-6463/aaaf89
Resonant Hall effect under generation of a self-sustaining mode of spin current in nonmagnetic bipolar conductors with identical characters between holes and electrons Reviewed International journal

@Masamichi Sakai, @Hiraku Takao, @Tomoyoshi Matsunaga, @Makoto Nishimagi, @Keitaro Iizasa, @Takahito Sakuraba, @Koji Higuchi, @Akira Kitajima, @Shigehiko Hasegawa, @Osamu Nakamura, @Yuichiro Kurokawa, @Hiroyuki Awano,

JAPANESE JOURNAL OF APPLIED PHYSICS 57 ( 3 ) 2018.3

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

DOI： 10.7567/JJAP.57.033001
Thermally Assisted Current-Induced Domain Wall Motion in Tb/Co Magnetic Multilayered Wire with a High Domain Wall Propagation Field Reviewed International journal

@Yuichiro Kurokawa, @Do Bang, @Hiroyuki Awano

IEEE Transactions on Magnetics 53 ( 7 ) 2017.7

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We investigated the current-induced domain wall (DW) motion in Tb/Co multilayered wire with various substrate temperatures (T_s). The coercivity and DW propagation field of the Tb/Co multilayered film are 10 and 8 kOe, respectively. In the Tb/Co wire, the DW velocity is 2.4 m/s for a current density of 4.5 × 10¹¹ Am² at room temperature. At T_s = 343 K, we also found that the DW velocity is about two times higher than that at room temperature. The enhancement of DW velocity can be attributed to thermally activated creep DW motion and/or the reduction of the depinning current density.

DOI： 10.1109/TMAG.2017.2676086
Electric and magnetic evolution in sputter-deposited Fe_xSi_1-x alloy films Reviewed International journal

Kenji Sumiyama, Minoru Yamazaki, Takeshi Yoneyama, Kohdai Suzuki, Kohji Takemura, Yuichiro Kurokawa, Takehiko Hihara

Materials Transactions 57 ( 6 ) 907 - 912 2016.4

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DOI： 10.2320/matertrans.M2016046
Electric evolution in sputter-deposited Sn_cSnSi_1-cSn alloy films Reviewed International journal

Kenji Sumiyama, Yuichiro Kurokawa, Hirotaka Yamada, Minoru Yamazaki, Takehiko Hihara

Materials Transactions 57 ( 6 ) 903 - 906 2016.4

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DOI： 10.2320/matertrans.M2016029
Electric and magnetic evolutions in composite assemblies of Fe and Si nano-particles Reviewed International journal

Kenji Sumiyama, Minoru Yamazaki, Yuichiro Kurokawa, Nobuyuki Shinohara, Takehiko Hihara

Materials Transactions 56 ( 3 ) 292 - 296 2015.2

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DOI： 10.2320/matertrans.M2014434
Electrically conductive properties of Ag/Si composite nanoparticle assembled films prepared with a plasma-gas-condensation cluster source Reviewed International journal

Yuichiro Kurokawa, Takehiko Hihara

Japanese journal of applied physics 53 ( 11 ) 2014.11

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

DOI： 10.7567/JJAP.53.110313
Characterization of critical volume for percolation in Sn/Si bimetallic cluster assemblies with various packing fractions Reviewed International journal

Yuichiro Kurokawa, Takehiko Hihara

journal of the physical society of japan 83 ( 5 ) 2014.5

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

DOI： 10.7566/JPSJ.83.054714
Annealing effects on structures and morphologies of Fe/Si coreshell clusters Reviewed International journal

Kenji Sumiyama, Satoshi Kadowaki, Yuichiro Kurokawa, Naokage Tanaka, Ryoji Katoh, Takehiko Hihara

Materials Transactions 54 ( 4 ) 498 - 504 2013.3

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

DOI： 10.2320/matertrans.M2012383
Electrical resistivity and morphology of Sn _1-x/Si _x core-shell cluster network prepared by a plasma-gas-condensation cluster source Reviewed International journal

Yuichiro Kurokawa, Takehiko Hihara, Kenji Sumiyama

Materials Transactions 53 ( 11 ) 1929 - 1932 2012.10

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

DOI： 10.2320/matertrans.M2012232
Magnetic properties of cluster/thin-film laminated hybrids of FePt and FeCo alloys Reviewed International journal

Kenji Sumiyama, Shogo Sawa, Dong Liang Peng, Yuichiro Kurokawa, Takeshi Yamabuchi, Takehiko Hihara

Materials Transactions 53 ( 9 ) 1563 - 1570 2012.7

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

DOI： 10.2320/matertrans.M2012120
Possibility of exciton mediated superconductivity in nano-sized Sn/Si core-shell clusters A process technology towards heterogeneous material in nano-scale Reviewed International journal

Yuichiro Kurokawa, Takehiko Hihara, Ikuo Ichinose, Kenji Sumiyama

Japanese journal of applied physics 51 ( 7 PART 1 ) 2012.7

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

DOI： 10.1143/JJAP.51.070207

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Presentations

フレキシブルスピントロニクスの為の素子作製技術 Invited

黒川　雄一郎

マグネティックス研究会 2025.1

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Event date： 2025.1

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

Venue：名古屋大学
印刷回路を用いたフレキシブル磁気センサー Invited

黒川　雄一郎

JST　新技術説明会 2024.8

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Event date： 2024.8

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

Venue：オンライン
Inkjet-printed spin Seebeck thermopile device International conference

Yuichiro Kurokawa, Keisuke Yamada, Akihiro Yoshifuku, Hiromi Yuasa

ICM 2024

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Event date： 2024.6 - 2024.7

Language：English Presentation type：Poster presentation

Venue：Bologna Country：Italy
インクジェット印刷によるスピンゼーベック素子作製

#黒川雄一郎、@山田啓介、湯浅裕美

第71回応用物理学会春季学術講演会 2024.3

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Event date： 2024.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：東京都市大 Country：Japan
低飽和磁化材料をフリー層とするbiquadratic 結合を用いたスピントルクオシレータの基礎検討

黒川雄一郎、@山田啓介、@谷口知大、#堀池周、田中輝光、湯浅裕美

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：オンライン Country：Japan
希土類合金磁性細線を用いた電流誘起磁壁移動の温度依存性の測定

@黒川雄一郎，#若江将和，@鷲見聡，@粟野博之，@大西紘平，@湯浅裕美

電気学会マグネティックス／電子材料合同研究会 2019.3

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Event date： 2019.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：名古屋大学 Country：Japan
Current-induced domain wall motion in rare-earth transition-metal alloy magnetic wire for future memory Invited International conference

@Yuichiro Kurokawa

CARN-OSAKA Annual Workshop 2018 2018.12

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Event date： 2018.12

Language：English Presentation type：Oral presentation (general)

Venue：osaka Country：Japan
Multilayered current-induced domain wall motion for high density magnetic memory International conference

@Yuichiro Kurokawa, @Satoshi Sumi, @Hiroyuki Awano, @Hiromi Yuasa

9th Joint European Magnetic Symposia 2018.9

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Event date： 2018.9

Language：English Presentation type：Oral presentation (general)

Venue：Mainz Country：Germany
Current-induced domain wall motion in rare-earth transition-metal alloy magnetic wire Invited International conference

@Yuichiro Kurokawa

SKKU and Kyushu university Joint Workshop 2018.1

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Event date： 2018.1

Language：English Presentation type：Oral presentation (general)

Venue：fukuoka Country：Japan
Observation of writing and driving using spin-orbit torque writing for racetrack memory application International conference

H. Hasegawa, Y. Kurokawa, H. Yuasa

IcAUMS 2025

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Event date： 2025.4

Language：English Presentation type：Poster presentation

Venue：Okinawa Country：Japan
Fabrication of perpendicular magnetic anisotropic films on the side of uneven structures toward 3D devices International conference

Y. Yasuda, Y. Kurokawa, S. Sumi, H. Awano, K. Tanabe

IcAUMS 2025

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Event date： 2025.4

Language：English Presentation type：Poster presentation

Venue：Okinawa Country：Japan
Attachable spin orbit torque device on thin polyimide sheet

Yuichiro Kurokawa, Naoto Yamashita, Seiya Oishi, Kazuhiko Tokunaga, Hiromi Yuasa

第72回応用物理学会春季学術講演会

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Event date： 2025.3

Language：Japanese Presentation type：Poster presentation

Venue：東京理科大
Co/Ni 多層磁性細線によるレーストラックメモリの動作に関する研究

長谷川博一, 黒川雄一郎, 湯浅裕美

第72回応用物理学会春季学術講演会

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Event date： 2025.3

Language：Japanese Presentation type：Poster presentation

Venue：東京理科大
Self-Generated Spin Waves and Spin Transfer Torque Driven Oscillations in Biquadratic Coupled Orthogonal Magnetization Disks International conference

T. Cheng, C. Liu, Y. Kurokawa and H. Yuasa

The 16th Joint Conference on Magnetism and Magnetic Materials and Intermag

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Event date： 2025.1

Language：English Presentation type：Poster presentation

Venue：New Orleans Country：United States
Possibility of Achieving Both Skyrmion Stability and High-Speed Transport on W/CoFeB International conference

T. Cheng, L. Zhang, R. Satone, Y. Kurokawa, K. Tokunaga and H. Yuasa

The 16th Joint Conference on Magnetism and Magnetic Materials and Intermag

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Event date： 2025.1

Language：English Presentation type：Poster presentation

Venue：New Orleans Country：United States
Realization of Perpendicular Magnetic Anisotropy of (001) Mn1.5Ga on SiO2 substrate International conference

N. Zahrin, K. Tokunaga, Y. Kurokawa and H. Yuasa

The 16th Joint Conference on Magnetism and Magnetic Materials and Intermag

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Event date： 2025.1

Language：English Presentation type：Poster presentation

Venue：New Orleans Country：United States
Required Dzyaloshinskii–Moriya constant and Perpendicular Magnetic Anisotropy for Zero-Field Skyrmion Formation in a Hole-Structured Bilayer International conference

Yujian Tang, Kazuhiko Tokunaga, Tsz Chung Cheng, Yuichiro Kurokawa, Hiromi Yuasa

The 9th Asian Applied Physics Conference (Asian-APC)

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Event date： 2024.12

Language：English Presentation type：Poster presentation

Venue：Okinawa Country：Japan
Investigation of the impact of dumping-like torque by inserting Gd-CoFeB alloy at the W/CoFeB interface International conference

Kazuhiko Tokunaga, Yuichiro Kurokawa, Hiromi Yuasa

IWNT2024

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Event date： 2024.11

Language：English Presentation type：Poster presentation

Venue：Hiroshima Country：Japan
Optimized insertion of Co-layers on the magnetic properties of Mn1.5Ga/MgO system International conference

Nur Amirah Zahrin, Kazuhiko Tokunaga, Yuichiro Kurokawa, and Hiromi Yuasa

IWNT2024

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Event date： 2024.11

Language：English Presentation type：Poster presentation

Venue：Hiroshima Country：Japan
Coupling of Self-Generated Spin Waves and Spin Transfer Torque Driven Oscillations in Biquadratic Coupled Orthogonal Magnetization Disks International conference

Tsz Chung Cheng, Chuhan Liu, Yuichiro Kurokawa, Hiromi Yuasa

IWNT2024

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Event date： 2024.11

Language：English Presentation type：Poster presentation

Venue：Hiroshima Country：Japan
Observation of Spin Seebeck Effect in YIG/Pt-Rh International conference

Shuto Sahara, Yuichiro Kurokawa, Hiromi Yuasa

IWNT2024

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Event date： 2024.11

Language：English Presentation type：Poster presentation

Venue：Hiroshima Country：Japan
W/CoFeB界面へのGd-CoFeB合金挿入によるダンピングライクトルクの向上

徳永和彦，黒川雄一郎，湯浅裕美

日本磁気学会第48回学術講演会

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Event date： 2024.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：秋田大学
Investigation of exchange bias field in magnetic multilayer fabricated by coating

Masamune Taguchi, Yuichiro Kurokawa, and Hiromi Yuasa

第84回応用物理学会秋季学術講演会

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Event date： 2024.9

Language：Japanese Presentation type：Poster presentation

Venue：新潟
Observation of Spin Seebeck Effect in YIG/Rh

Shuto Sahara, Yuichiro Kurokawa, Hiromi Yuasa

第84回応用物理学会秋季学術講演会

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Event date： 2024.9

Language：Japanese Presentation type：Poster presentation

Venue：新潟
Tunnel Magnetoresistance devices fabricated on polyimide film attached to PDMS

Seiya Oishi, Yuichiro Kurokawa, Naoto Yamashita, Hiromi Yuasa

第84回応用物理学会秋季学術講演会

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Event date： 2024.9

Language：Japanese Presentation type：Poster presentation

Venue：新潟
Spin-orbital torque and current-induced magnetization switching in gallium-doped rare-earth iron garnet International coauthorship

Naoto Yamasahita, Roselle Ngaloy, Yuichiro Kurokawa, Hiromi Yuasa, Saroj Prasad Dash

第84回応用物理学会秋季学術講演会

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Event date： 2024.9

Language：Japanese Presentation type：Poster presentation

Venue：新潟 Country：Japan
Observation of drain current in carbon nanotube transistor with magnetic electrode for organic spin transistor

Yuichiro Kurokawa, Naoki Tanaka, Masafumi Inaba, Naoto Yamashita, Hiromi Yuasa

第84回応用物理学会秋季学術講演会

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Event date： 2024.9

Language：Japanese Presentation type：Poster presentation

Venue：新潟
Improvement of spin orbital torque in Pt/Co/Ni system by insertion layer International conference

Lin Zhang, Kazuhiko Tokunaga, Yuichiro Kurokawa and Hiromi Yuasa

SSDM2024

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Event date： 2024.9

Language：English Presentation type：Poster presentation

Venue：Himeji Country：Japan
Lamination of Co/Tb sandwiched by Pt and W for high spin-orbit torque and thermal stability of skyrmions International conference

Kazuhiko Tokunaga, Yuichiro Kurokawa, Lin Zhang, Ryuta Satone, and Hiromi Yuasa

ICM 2024

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Event date： 2024.6 - 2024.7

Language：English Presentation type：Poster presentation

Venue：Bologna Country：Italy
Iron composition dependence of the longitudinal spin Seebeck voltage in Co3-XFeXO4 (0.5 ≤ X ≤ 2.0) films prepared by co-precipitation and spin-coating methods International conference

Kensuke Hayashi, Yuichiro Kurokawa, Hiromi Yuasa, Mutsuhiro Shima, and Keisuke Yamada

ICM 2024

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Event date： 2024.6 - 2024.7

Language：English Presentation type：Poster presentation

Venue：Bologna Country：Italy
Tunnel magnetoresistance sensor on 10 µm polyimide film for flexible application International conference

Seiya Oishi, Yuichiro Kurokawa, Naoto Yamashita, Hiromi Yuasa

ICM 2024

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Event date： 2024.6 - 2024.7

Language：English Presentation type：Poster presentation

Venue：Bologna Country：Italy
Micro -Magnetic Simulation Study on High-Frequency Microwave Generators Utilizing Spin Torque Oscillation in Orthogonal Magnetization Disks with Strong Biquadratic Magnetic Coupling International conference

Chuhan Liu, Yuichiro Kurokawa, Naoki Hashimoto, Terumitsu Tanaka, and Hiromi Yuasa

PIERS2024 2024.4

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Event date： 2024.4

Language：English Presentation type：Oral presentation (general)

Venue：Chengdu Country：China
ポリイミド薄膜上に成膜した磁性多層膜の磁化曲線

#大石　晟矢，黒川雄一郎，湯浅裕美

2023年度応用物理学会九州支部学術講演会 2023.11

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Event date： 2023.11

Language：Japanese Presentation type：Oral presentation (general)

Venue：九州大学 Country：Japan
スキルミオンの高密度と高速動作を目指した界面エンジニアリング

#佐藤根隆太，黒川雄一郎, 湯浅裕美

第47回日本磁気学会学術講演会 2023.9

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Event date： 2023.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：大阪大学 Country：Japan
Fabrication process of patterned perpendicular magnetized multilayered film on plastic sheet for flexible magnetic memory

黒川雄一郎, 山下尚人, #大石晟矢, 湯浅　裕美

第83回応用物理学会秋季学術講演会 2023.9

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Event date： 2023.9

Language：English

Venue：熊本城ホール Country：Japan
Inserted–Gd effort on type of skyrmion in Pt/Co/Ni system International conference

#Lin Zhang, #Kazuhiko Tokunaga, Yuichiro Kurokawa, #Ryuta Satone, Takehiro Tamaoka, Yuto Tomita, Yasukazu Murakami, and Hiromi Yuasa

2023 International Conference on Solid State Devices and Materials (SSDM) 2023.9

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Event date： 2023.9

Language：English Presentation type：Oral presentation (general)

Venue：Nagoya Country：Japan
High Frequency Spin Torque Oscillation in Orthogonal Magnetization Disks with Strong Biquadratic Magnetic Coupling International conference

#Chuhan Liu, Yuichiro Kurokawa, #Naoki Hashimoto, Terumitsu Tanaka, and Hiromi Yuasa

2023 International Conference on Solid State Devices and Materials (SSDM) 2023.9

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Event date： 2023.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：Nagoya Country：Japan
Comparison of skyrmions in Pt/Co/Ni and Pt/Gd/Co/Ni systems International conference

#L. Zhang, #K. Tokunaga, Y. Kurokawa, #R. Satone, T. Tamaoka, Y. Tomita, Y. Murakami, and H. Yuasa

11th International Symposium on Metallic Multilayers (MML2023) 2023.7

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Event date： 2023.7

Language：English Presentation type：Oral presentation (general)

Venue：Seoul Country：Korea, Republic of
Spin Seebeck effect and Anomalous Nernst effect in YIG/Co-Ru/Pt systems International conference

#Y. Ikeda, #Y. Hamada, Y. Kurokawa, @C. Martin Valderrama, @A. Berger, H. Yuasa

11th International Symposium on Metallic Multilayers (MML2023) 2023.7

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Event date： 2023.7

Language：English Presentation type：Oral presentation (general)

Venue：Seoul Country：Korea, Republic of
Thermoelectric Generation in Y₃Fe₅O₁₂/Co-Ru/Pt Systems International conference

#Yuka Ikeda, #Yuki Hamada, Yuichiro Kurokawa, @Carmen Martin Valderrama, @Berger Andreas, Hiromi Yuasa

INTERMAG 2023 2023.5

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Event date： 2023.5

Language：English Presentation type：Oral presentation (general)

Venue：仙台国際センター, 宮城 Country：Japan
Improvement of Spin-Orbit Torque Efficency for High Speed Operation of Tb/Co-Based Skyrmions International conference

#Kazuhiko Tokunaga, Yuichiro Kurokawa, #Lin Zhang, #Ryuta Satone, Hiromi Yuasa

INTERMAG 2023 2023.5

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Event date： 2023.5

Language：English Presentation type：Oral presentation (general)

Venue：仙台国際センター, 宮城 Country：Japan
Numerical study on skyrmion transport with small size and high speed International conference

#Ryuta Satone, Yuichiro Kurokawa, Hiromi Yuasa

INTERMAG 2023 2023.5

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Event date： 2023.5

Language：English Presentation type：Oral presentation (general)

Venue：仙台国際センター, 宮城 Country：Japan
Observation of Anomalous Nernst Effect in Flexible Co-Pt Nanoparticle Assembled Films Fabricated by Chemical Processes International conference

Yuichiro Kurokawa, @Keisuke Yamada, @Hideki Matsui, @Mutsuhiro Shima, Hiromi Yuasa

INTERMAG 2023 2023.5

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Event date： 2023.5

Language：English Presentation type：Oral presentation (general)

Venue：仙台国際センター, 宮城 Country：Japan
Double heterostructure introduction in Pt/Ni/Co system for skyrmion with small size and fast transport International conference

#Lin Zhang, #Kazuhiko Tokunaga, Yuichiro Kurokawa, #Ryuta Satone, Takehiro Tamaoka, Yuto Tomita, Yasukazu Murakami, Hiromi Yuasa

INTERMAG 2023 2023.5

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Event date： 2023.5

Language：English Presentation type：Oral presentation (general)

Venue：仙台国際センター, 宮城 Country：Japan
Double heterostructure in Pt/Ni/Co system for skyrmion with small size and fast transport

#Lin Zhang, #Kazuhiko Tokunaga, #Ryuta Satone, Yuichiro Kurokawa, Takehiro Tamaoka, Yuto Tomita, Yasukazu Murakami, Hiromi Yuasa

第70回応用物理学会春季学術講演会 2023.3

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Event date： 2023.3

Language：English Presentation type：Oral presentation (general)

Venue：上智大学, 東京 Country：Japan
Improvement of Spin-Orbit Torque for high speed Operation of Tb/Co-based skyrmions

#Kazuhiko Tokunaga, Yuichiro Kurokawa, #Lin Zhang, #Ryuta Satone, Hiromi Yuasa

第70回応用物理学会春季学術講演会 2023.3

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Event date： 2023.3

Language：English Presentation type：Oral presentation (general)

Venue：上智大学, 東京 Country：Japan
Flexible spin device on dimethylpolysiloxane sheet

#Seiya Oishi, Yuichiro Kurokawa, Hiromi Yuasa

第70回応用物理学会春季学術講演会 2023.3

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Event date： 2023.3

Language：English Presentation type：Oral presentation (general)

Venue：上智大学, 東京 Country：Japan
Numerical study on skyrmion transport with small size and high speed

#Ryuta Satone, Yuichiro Kurokawa, Hiromi Yuasa

第70回応用物理学会春季学術講演会 2023.3

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Event date： 2023.3

Language：English Presentation type：Oral presentation (general)

Venue：上智大学, 東京 Country：Japan
Thermoelectric effect in YIG/Co-Ru/Pt systems

#Yuka Ikeda, #Yuki Hamada, Yuichiro Kurokawa, @Carmen Valderrama, @Andreas Berger, Hiromi Yuasa

第70回応用物理学会春季学術講演会 2023.3

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Event date： 2023.3

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
High Frequency Spin Torque Oscillation in Orthogonal Magnetization Disks with Strong Biquadratic Magnetic Coupling International conference

#Chuhan Liu, #Naoki Hashimoto, Yuichiro Kurokawa, Terumitsu Tanaka, and Hiromi Yuasa

67th Annual Conference on Magnetism and Magnetic Materials (MMM2023) 2022.10

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Event date： 2022.10

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Operating characteristics of domain walls in perpendicular magnetized ferrimagnetic nano-pillar for three-dimensional magnetic memory International conference

Yuichiro Kurokawa, Hiromi Yuasa

2022 International Conference on Solid State Devices and Materials (SSDM) 2022.9

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Event date： 2022.9

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
交換バイアスを印加したTb-Fe層における無磁場中スピンオービットトルク磁化反転の観察

黒川雄一郎, #若江将和, #濵田勇樹, #藤本真大, #伊藤正裕, 湯浅裕美

第45回日本磁気学会学術講演会 2022.9

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Event date： 2022.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：信州大学, 長野 Country：Japan
シミュレーションによるCoFeBおよびGdCo上のスキルミオンの数値的評価

#佐藤根隆太,　黒川雄一郎,　湯浅裕美

電気関係学会九州支部第75回連合大会 2022.9

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Event date： 2022.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Double heterostructure introduction in Pt/Ni/Co system for skyrmion with small size and fast transport International conference

#Lin Zhang, #Ryuta Satone, Xiaorui Ya, Yuichiro Kurokawa, Takehiro Tamaoka, Yuto Tomita, Hongye Gao, Satoshi Hata, Yasukazu Murakami, Terumitsu Tanaka, Hiromi Yuasa

第83回応用物理学会秋季学術講演会 2022.9

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Event date： 2022.9

Language：English Presentation type：Oral presentation (general)

Venue：東北大学, 宮城 Country：Japan
Investigation of Multileveled Spin Orbit Torque Magnetization Switching for High Density Magnetic Memory International conference

#Uraku kamihoki, Yuichiro Kurokawa, #Masahiro Fujimoto, #Masahiro Itoh, Hiromi Yuasa

2022 International Conference on Solid State Devices and Materials (SSDM) 2022.9

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Event date： 2022.9

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Current-induced domain wall motion in ferrimganetic Gd-Fe wire International conference

Y. Kurokawa, #M. Wakae, #M. Memita, #U. Kamihoki, #M. Fujimoto, @S. Sumi, @H. Awano, K. Ohnishi, and H. Yuasa

24th International Colloquium on Magnetic Films and Surfaces (ICMFS) 2022.7

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Event date： 2022.7

Language：English Presentation type：Oral presentation (general)

Venue：OIST, 沖縄 Country：Japan
Spin Torque Oscillation in Orthogonal Magnetization Disks with 90° magnetic coupling International conference

#C. Liu, Y. Kurokawa, #N. Hashimoto, T. Tanaka, H. Yuasa

24th International Colloquium on Magnetic Films and Surfaces (ICMFS) 2022.7

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Event date： 2022.7

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Investigation of shifting threshold current density of spin orbit torque magnetization switching International conference

#K. Uraku, #M. Fujimoto, #M. Ito, Y. Kurokawa, H. Yuasa

24th International Colloquium on Magnetic Films and Surfaces (ICMFS) 2022.7

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Event date： 2022.7

Language：English Presentation type：Oral presentation (general)

Venue：OIST, 沖縄 Country：Japan
Double heterostructure introduction in Pt/CoFeB system for skyrmion with small size and fast transport International conference

#Z. Ling, #R. Satone, Y. Kurokawa, H. Yuasa

24th International Colloquium on Magnetic Films and Surfaces (ICMFS) 2022.7

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Event date： 2022.7

Language：English Presentation type：Oral presentation (general)

Venue：OIST, 沖縄 Country：Japan
Numerical Evaluation of Skyrmion Stability on CoFeB and GdCo

#Ryuta Satone, Yuichiro Kurokawa, Hiromi Yuasa

第69回応用物理学会春季学術講演会 2022.3

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Event date： 2022.3

Language：English Presentation type：Oral presentation (general)

Venue：青山学院大学 Country：Japan
Investigation of bit shift and write operation using spin orbit torque switching in racetrack memory

#Masayuki Memita, Yuichiro Kurokawa, #Uraku Kamihoki, #Masahiro Fujimoto, Hiromi Yuasa

第69回応用物理学会春季学術講演会 2022.3

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Event date： 2022.3

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Thermoelectric effect in YIG/Co-Ru/Pt systems

#Yuka Ikeda, #Tomoki Yamauchi, #Yuki Hamada, Yuichiro Kurokawa, @Carmen Valderrama, @Andreas Berger, Hiromi Yuasa

第69回応用物理学会春季学術講演会 2022.3

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Event date： 2022.3

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Sub-THz spin torque oscillation excited by inverse effective spin torque in ferrimagnetic material at angular momentum compensation composition International conference

Y. Kurokawa, #N. Hashimoto, #C. Liu, T. Tanaka, H. Yuasa

2022 Joint MMM-INTERMAG 2022.1

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Event date： 2022.1

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：United States
Anomalous Nernst effect in Fe-Si alloy films International conference

#Y. Hamada, Y. Kurokawa, #T. Yamauchi, H. Yuasa

2022 Joint MMM-INTERMAG 2022.1

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Event date： 2022.1

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：United States
Spin Torque Oscillation Starting-up Time Dependence on the Initial Magnetization Orientation in Orthogonal Magnetization Disks International conference

#L. Chuhan, Y. Kurokawa, #N. Hashimoto, T. Tanaka, H. Yuasa

2022 Joint MMM-INTERMAG 2022.1

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Event date： 2022.1

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：United States
多値メモリ応用の為の非対称スピンオービットトルク磁化反転の観測

#上穂木有樂, 黒川雄一郎, #藤本真大, 湯浅裕美

2021年度応用物理学会九州支部学術講演会 2021.12

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Event date： 2021.12

Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Investigation of anomalous Nernst effect toward thin flexible temperature sensor International conference

Yuichiro Kurokawa, #Masahiro Fujimoto, and Hiromi Yuasa

33th International Microprocesses and Nanotechnology Conference 2020.11

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Event date： 2021.11

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Direct observation of magnetic process in quasi-antiferromagnet by high resolution Kerr microscopy International conference

#Naoki Hashimoto,#Shuu Horiike,Yuichiro Kurokawa,@Po-Chun Chang,@Wen-Chin Lin,Hiromi Yuasa

2020 International Conference on Solid State Devices and Materials 2020.9

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Event date： 2021.9

Language：English Presentation type：Oral presentation (general)

Venue：Online Country：Japan
2成分磁化を扱うシミュレーションによる希土類フェリ磁性体角運動量補償点におけるスピン移行トルク発振

#橋本直樹, 黒川雄一郎, #劉楚寒, 田中輝光, 湯浅裕美

第74回電気・情報関係学会九州支部連合大会 2021.9

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Event date： 2021.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Scalable spin Seebeck device using Fe-oxide nanoparticle assembled film on flexible substrate

Yuichiro Kurokawa, Yusuke Tahara, #Yuki Hamada, #Masahiro Fujimoto, Hiromi Yuasa

第82回応用物理学会秋季学術講演会 2021.9

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Event date： 2021.9

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Inactivation of Damping Like Torque in Tb-Gd-Fe Film on Ta Layer International conference

Yuichiro Kurokawa, #Masahiro Itoh, #Masakazu Wakae, #Masahiro Fujimoto, #Uraku Kamihoki, Hiromi Yuasa

SSDM 2021 2021.9

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Event date： 2021.9

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Insertion Layer Magnetism Detection using transverse-MOKE Ellipsometry International conference

@Carmen Martin Valderrama, @Mikel Quintana, #Tomoki Yamauchi, #Yuki Hamada, Yuichiro Kurokawa, Hiromi Yuasa, @Andreas Berger

SSDM 2021 2021.9

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Event date： 2021.9

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Anomalous Nernst effect dependence on composition in Fe100-XRhX alloys International conference

#Tomoki Yamauchi, #Yuki Hamada, Yuichiro Kurokawa, Hiromi Yuasa

SSDM 2021 2021.9

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Event date： 2021.9

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
高磁気抵抗率と低閾電流密度の両立を目指すCoFeB/Tb-Fe垂直磁化細線の電流誘起磁化反転の観察

#藤本真大，#上穂木有樂，黒川雄一郎，湯浅裕美

第45回日本磁気学会学術講演会 2021.9

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Event date： 2021.8 - 2021.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Fe100-XRhXにおける異常ネルンスト効果の組成依存性

#山内友喜，#濱田勇樹，黒川雄一郎，湯浅裕美

第45回日本磁気学会学術講演会 2021.9

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Event date： 2021.8 - 2021.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Standing Spin Wave Resonance Properties of Multiple Spin Wave Modes on Co2FeAl Magnetic Strip Under Zero Bias Field International conference

X. Ya, #K. Kurihara, K. Koki, #H. Ogami, Y. Kurokawa, H. Yuasa, T. Tanaka and K. Matsuyama

Intermag21 2021.4

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Event date： 2021.4

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Other
Spin Transfer Torque Oscillation in Orthogonal Magnetization Disks International conference

#L. Chuhan, #H. Naoki, #H. Shu, Y. Kurokawa and H. Yuasa

Intermag21 2021.4

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Event date： 2021.4

Language：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Other
Biquadratic magnetic coupling dependence on material of spacer

#Chuhan Liu, #Hashimoto Naoki, #Horiike Shu, Kurokawa Yuichiro, Yuasa Hiromi

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：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Observation of asymmetric spin orbit torque magnetization switching using ferromagnetic/heavy metal/ferromagnetic multilayer film.

#Uraku Kamihoki, #Masahiro Fujimoto, #Masahiro Itoh, Yuichiro Kurokawa, Hiromi Yuasa

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：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Anomalous Nernst effect in Fe3Si film

Yuki Hamada, Hiroki Hanamoto, Tomoki Yamauchi, Yuichirou Kurokawa, Hiromi Yuasa

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：English Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
酸化鉄ナノ粒子分散膜を用いたスピン熱電変換の観測

黒川雄一郎，#濵田勇樹，湯浅裕美

第44回日本磁気学会学術講演会 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
YIGナノ結晶体から形成された薄膜における微細構造とスピンゼーベック起電力の相関解明

@正木信也，@山本幹也，@近藤慶太，@山田啓介，黒川雄一郎，@塩田陽一，@森山貴広，@小野輝男，湯浅裕美，@嶋睦宏

第44回日本磁気学会学術講演会 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
Tb_xFe_100-x/Pt 細線のスピンオービットトルクにおけるTb添加効果

#藤本真大, #伊藤正裕, #若江将和, 黒川雄一郎, 湯浅裕美

2020年度応用物理学会九州支部学術講演会 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
Si 基板上における CsCl 型規則相 FeRh 合金薄膜成長

#山内友喜, #花本寛気, 黒川雄一郎, 湯浅裕美

2020年度応用物理学会九州支部学術講演会 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
IrMnを挿入したY3Fe5O12/Ptのスピンゼーベック効果とスピンホール磁気抵抗効果

#花本寛気, #中田記矢, #新村拓未, #李厚霖, 黒川雄一郎, 湯浅裕美

電気関係学会九州支部第73回連合大会 2020.9

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Event date： 2020.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
様々な重金属層下地を持つTb-Gd-Fe細線のスピンオービットトルク

#伊藤正裕, #若江将和, #藤本真大, 黒川雄一郎, 湯浅裕美

電気関係学会九州支部第73回連合大会 2020.9

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Event date： 2020.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Magnetic dynamics of Quasi-antiferromagnetic layer fabricated by 90 degrees magnetic coupling

#Shuu Horiike, #Yongshi Zhong, Yuichiro Kurokawa, Terumitsu Tanaka, Kimihide Matsuyama, Hiromi Yuasa

Spin-RNJ 若手オンライン研究発表会 2020.6

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Event date： 2020.6

Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
希土類フェリ垂直磁化細線を用いた無磁場中スピン軌道トルク磁化反転実現の試み

@黒川雄一郎,　#若江将和,　#藤本真大,　#伊藤正裕,　@湯浅裕美

Spin-RNJ 若手オンライン研究発表会 2020.6

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Event date： 2020.6

Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
Observation of spin orbit torque magnetization switching without external magnetic field in wire fabricated by magnetic field applied sputtering method

@Yuichiro Kurokawa, #Masakazu Wakae, #Masahiro Fujimoto, #Masahiro Itoh, @Hiromi Yuasa

第67回応用物理学会春季学術講演会 2020.3

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Event date： 2020.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：上智大学四谷キャンパス Country：Japan
FeRh film grownth on polycrystalline Y3Fe5O12 film by using sputtering

#Tomoki Yamauchi, #Takumi Niimura, #Li Houlin, #Hiroki Hanamoto, @Yuichirou Kurokawa, @Hiromi Yuasa

第67回応用物理学会春季学術講演会 2020.3

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Event date： 2020.3

Language：English Presentation type：Oral presentation (general)

Venue：上智大学四谷キャンパス Country：Japan
Tb-Fe細線を⽤いた電流誘起磁化反転の観察とスピンオービットトルクの測定

#藤本真⼤, #若江将和, #伊藤正裕, @⿊川雄⼀郎, @湯浅裕美

第67回応用物理学会春季学術講演会 2020.3

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Event date： 2020.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：上智大学四谷キャンパス Country：Japan
Emerging memories by using magnetic materials Invited International conference

@Yuichiro Kurokawa, @Hiromi Yuasa

Joint Symposium on Materials Chemistry and Engineering 2020.1

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Event date： 2020.1

Language：Japanese Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
90度磁気結合を利用した擬似反強磁性層の磁気ダイナミクス

#堀池周, #永島玄, #鐘永師, @黒川雄一郎,@ 田中輝光, @松山公秀, @湯浅裕美

スピントロニクス学術研究基盤と連携ネットワーク拠点Spin Research Network of Japan 【SpiN−RNJ】報告会 2019.12

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Event date： 2019.12

Language：Japanese Presentation type：Oral presentation (general)

Venue：大阪大学 Country：Japan
Mn系磁性層を挿入したY3Fe5O12/Ptのスピンホール磁気抵抗効果

#花本寛気, #新村拓未, @黒川雄一郎, @湯浅裕美

第125回日本物理学会九州支部例会 2019.11

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Event date： 2019.11

Language：Japanese Presentation type：Oral presentation (general)

Venue：佐賀大学 Country：Japan
Tb-Gd-Fe 細線における Tb 組成と重金属下地が及ぼすスピンオービットトルクへの影響

#伊藤正裕, #若江将和, @黒川雄一郎, @湯浅裕美

2019年度応用物理学会九州支部学術講演会 2019.11

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Event date： 2019.11

Language：Japanese Presentation type：Oral presentation (general)

Venue：熊本大学 Country：Japan
スピンゼーベック発電における電気陰性度の影響

#李厚霖, #新村拓未, @黒川雄一郎, @湯浅裕美

2019年度応用物理学会九州支部学術講演会 2019.11

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Event date： 2019.11

Language：Japanese Presentation type：Oral presentation (general)

Venue：熊本大学 Country：Japan
Determination of fine magnetic structure of magnetic multilayer with quasi antiferromagnetic layer by using polarized neutron reflectivity analysis International conference

#Y. Zhong, @Y. Kurokawa, #G. Nagashima, #S. Horiike, @T. Hanashima, @D. Schönke, @P. Krautscheid, @R.M. Reeve, @M. Kläui, @H. Yuasa

64th Annual Conference on Magnetism and Magnetic Materials (MMM2019) 2019.11

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Event date： 2019.11

Language：English Presentation type：Oral presentation (general)

Venue：Las Vegas, NV Country：United States
Interface Magnetic Property Impact on Spin Injection and Pumping in YIG/Ultrathin Magnetic layer/Pt Systems

@H. Yuasa, #T. Niimura, @Y. Kurokawa, @R. Weber, @A. Berger

64th Annual Conference on Magnetism and Magnetic Materials (MMM2019) 2019.11

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Event date： 2019.11

Language：English Presentation type：Oral presentation (general)

Venue：Las Vegas, NV Country：United States
電流誘起磁壁移動現象を用いたロジック回路の作製

@黒川雄一郎, #若江将和, #伊藤正裕, @木村圭伸, @鷲見聡, @粟野博之, @大西紘平, @湯浅裕美

電子情報通信学会　磁気記録・情報ストレージ研究会 2019.10

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Event date： 2019.10

Language：Japanese Presentation type：Oral presentation (general)

Venue：九州大学 (西新プラザ) Country：Japan
希土類磁性体を用いた無磁場中スピンオービットルク磁化反転

#若江将和, #伊藤正裕, @黒川雄一郎, @大西絋平, @湯浅裕美

電子情報通信学会　磁気記録・情報ストレージ研究会 2019.10

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Event date： 2019.10

Language：Japanese Presentation type：Oral presentation (general)

Venue：九州大学 (西新プラザ) Country：Japan
各種磁性層を挿入したYIG/Ptのスピンホール磁気抵抗効果

#新村拓未, #李厚霖, @黒川雄一郎, @湯浅裕美

電子情報通信学会　磁気記録・情報ストレージ研究会 2019.10

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Event date： 2019.10

Language：Japanese Presentation type：Oral presentation (general)

Venue：九州大学 (西新プラザ) Country：Japan
90度磁気結合膜の偏極中性子線反射率による微細磁気構造解析

#鍾永師，#永島玄，#堀池周，@花島隆泰，@黒川雄一郎，@湯浅裕美

第43回日本磁気学会学術講演会 2019.9

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Event date： 2019.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：京都大学吉田キャンパス Country：Japan
多結晶YIG 薄膜のスピンゼーベック電圧とギルバートダンピング定数の相関の解明

@正木信也, @山田啓介, @黒川雄一郎, @塩田陽一, @森山貴広, @小野輝男, @湯浅裕美, @嶋睦宏

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：北海道大学札幌キャンパス Country：Japan
Pt-Ru 合金を用いたスピンゼーベック起電力

#李厚霖，#新村拓未, #花本寛気, @黒川雄一郎, @湯浅裕美

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：北海道大学札幌キャンパス Country：Japan
Magnetic dynamics of quasi-antiferromagnetic layer fabricated by 90 degrees magnetic coupling International conference

#Shu Horiike, #Gen Nagashima, @Yuichiro Kurokawa, #Yongshi Zhong, @Kazuto Yamanoi, @Terumitsu Tanaka, @Kimihide Matsuyama, @Hiromi Yuasa

2019 International Conference on Solid State Devices and Materials (SSDM) 2019.9

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Event date： 2019.9

Language：English Presentation type：Oral presentation (general)

Venue：Nagoya Country：Japan
90度磁気結合におけるSEMPAによる実観測とマイクロマグネティックシミュレーション

@黒川雄一郎, #永島玄, #鍾永師, #堀池周, @Daniel Schönke, @Pascal Krautscheid, @Robert Reeve, @Mathias Kläui, @田中輝光, @松山公秀, @湯浅裕美

日本物理学会第74回年次大会 2019.3

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Event date： 2019.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：九州大学 Country：Japan
FeOの酸化状態と90度磁気結合の関係

#堀池周, #鐘永師, #永島玄, @黒川雄一郎, @大西絋平, @湯浅裕美

日本物理学会第74回年次大会 2019.3

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Event date： 2019.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：九州大学 Country：Japan
Tb-Gd-Fe細線におけるスピンオービットトルクのTb濃度依存性

#伊藤正裕, #若江将和, @黒川雄一郎, @大西紘平, @湯浅裕美

日本物理学会第74回年次大会 2019.3

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Event date： 2019.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：九州大学 Country：Japan
厚膜GdFeCo磁性細線における電流誘起磁壁移動

@高橋晨、@黒川雄一郎、@鷲見聡、@田辺賢士、@粟野博之

第66回応用物理学会春季学術講演会 2019.3

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Event date： 2019.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：東京工業大学 Country：Japan
90度磁気結合膜のX線反射率による構造解析

#鍾永師, #永島玄, #堀池周, @花島隆泰, @黒川雄一郎, @湯浅裕美

第66回応用物理学会春季学術講演会 2019.3

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Event date： 2019.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：東京工業大学 Country：Japan
Ru insertion effect on spin Seebeck effect of YIG/Ta or Pt

#Houlin Li, #Takumi Niimura, #Fumiya Nakata, @Yuichiro Kurokawa, @Hiromi Yuasa

第66回応用物理学会春季学術講演会 2019.3

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Event date： 2019.3

Language：English Presentation type：Oral presentation (general)

Venue：東京工業大学 Country：Japan
Observation of spin-orbit torque magnetization switching in Gd-Fe perpendicular magnetized wire with IrMn cap layer

#Masakazu Wakae, #Masahiro Itoh, @Yuichiro Kurokawa, @Kohei Ohnishi, @Hiromi Yuasa

第66回応用物理学会春季学術講演会 2019.3

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Event date： 2019.3

Language：English Presentation type：Oral presentation (general)

Venue：東京工業大学 Country：Japan
Investigation of Y-shaped magnetic wire logic device by current-induced domain wall motion

@Yuichiro Kurokawa, #Masakazu Wakae, #Masahiro Itoh, @Satoshi Sumi, @Hiroyuki Awano, @Kohei Ohnishi, @Hiromi Yuasa

第66回応用物理学会春季学術講演会 2019.3

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Event date： 2019.3

Language：English Presentation type：Oral presentation (general)

Venue：東京工業大学 Country：Japan
Spin Hall magnetoresistance of YIG / Pt with magnetic layer inserted into the interface

#Takumi Niimura、#Fumiya Nakata、#Houlin Li、@Yuichiro Kurokawa、@Hiromi Yuasa

第66回応用物理学会春季学術講演会 2019.3

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Event date： 2019.3

Language：English Presentation type：Oral presentation (general)

Venue：東京工業大学 Country：Japan
各種磁性層を挿入したYIG/Ptのスピンホール磁気抵抗効果

#新村拓未，#中田記矢，#李厚霖，@黒川雄一郎，@湯浅裕美

平成30年度応用物理学会九州支部学術講演会 2018.12

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Event date： 2018.12

Language：Japanese Presentation type：Oral presentation (general)

Venue：福岡大学 Country：Japan
90度磁気結合膜のスピンSEM観察

#鍾　永師，#永島　玄, @Daniel Schönke, @Robert M. Reeve, @Mathias Kläui, #堀池　周，@黒川雄一郎，@湯浅裕美

電気関係学会九州支部第71回連合大会 2018.9

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Event date： 2018.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：大分大学 Country：Japan
YIG/TaW界面へのRu挿入層のスピンゼーベック効果における役割

#李厚霖，#新村　拓未，#中田記矢，@黒川雄一郎, @湯浅裕美

第79回応用物理学会秋季学術講演会 2018.9

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Event date： 2018.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：名古屋国際会議場 Country：Japan
Fe-Oを介した90度磁気結合の下地依存性

#永島玄，#鍾永師，#堀池周，@黒川雄一郎，@湯浅裕美

第79回応用物理学会秋季学術講演会 2018.9

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Event date： 2018.9

Language：Japanese Presentation type：Oral presentation (general)

Venue：名古屋国際会議場 Country：Japan
Observation of Spin-Orbit Torque Magnetization Switching in Gd-Fe Perpendicular Magnetized Wire without External Magnetic Field International conference

#Masakazu Wakae, @Yuichiro Kurokawa, @Hiromi Yuasa

2018 International Conference on Solid State Devices and Materials 2018.9

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Event date： 2018.9

Language：English Presentation type：Oral presentation (general)

Venue：Tokyo Country：Japan
Spin Seebeck voltage enhancement by IrMn and Mn insertion at the interface between YIG and nonmagnetic layer International conference

#Fumiya Nakata, #Takumi Niimura, @Yuichiro Kurokawa, @Hiromi Yuasa

2018 International Conference on Solid State Devices and Materials 2018.9

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Event date： 2018.9

Language：English Presentation type：Oral presentation (general)

Venue：Tokyo Country：Japan
Observation of Longitudinal Spin Seebeck Voltage in Chemically Synthesized Y3Fe5O12 Films International conference

@Keisuke Yamada, @Yuichiro Kurokawa, @Kazuma Kogiso, @Hiromi Yuasa, @Mutsuhiro Shima,

International Conference on Magnetism 2018 2018.7

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Event date： 2018.7

Language：English Presentation type：Oral presentation (general)

Venue：San Francisco Country：United States
Inserted layer effect on Spin Mixing Conductance in Spin Seebeck Effect International conference

@Hiromi Yuasa, #Ryohei Nakamura, #Fumiya Nakata, @Yuichiro Kurokawa

International Conference on Magnetism 2018 2018.7

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Event date： 2018.7

Language：English Presentation type：Oral presentation (general)

Venue：San Francisco Country：United States
Ta/GdFe磁性細線における電流誘起磁壁移動の温度依存性

@黒川雄一郎, #若江将和, @吉村瞭吾, @近藤広泰, @鷲見聡, @粟野博之, @湯浅裕美

日本物理学会第73回年次大会 2018.3

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Event date： 2018.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：東京理科大 Country：Japan
Spin thermoelectric power generation using amorphous ferrimagnetic Gd-Fe alloy

#Yukimasa Hatsuta, @Yuichiro Kurokawa, @Hiromi Yuasa

第65回応用物理学会春季学術講演会 2018.3

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Event date： 2018.3

Language：English Presentation type：Oral presentation (general)

Venue：早稲田大学 Country：Japan
Investigation of current-induced domain wall motion in Gd-Fe wire with low domain wall propagation filed

@Yuichiro Kurokawa, #Masakazu Wakae, @Ryogo Yoshimura, @Hiroyasu Kondo, @Satoshi Sumi, @Hiroyuki Awano, @Hiromi Yuasa

第65回応用物理学会春季学術講演会 2018.3

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Event date： 2018.3

Language：English Presentation type：Oral presentation (general)

Venue：早稲田大学 Country：Japan
Observation of spin-orbit torque magnetization switching in Gd-Fe perpendicular magnetized wire without external magnetic field

#Masakazu Wakae, @Yuichiro Kurokawa, @Hiromi Yuasa

第65回応用物理学会春季学術講演会 2018.3

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Event date： 2018.3

Language：English Presentation type：Oral presentation (general)

Venue：早稲田大学 Country：Japan

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MISC

インクジェット印刷で作製したスピントロニクス熱電変換素子

黒川　雄一郎、@山田　啓介、湯浅　裕美

CERAMICS JAPAN誌　トピックス 2024.4

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)

Professional Memberships

The Japan Society of Applied Physics
The Magnetics Society of Japan
IEEE Magnetic Society
電気学会

Committee Memberships

IEEE Mag Fukuoka Hiroshima chapter 会計 Foreign country

2024.3 - 2026.3
電気学会マグネティックス研究会委員 Domestic

2023.4 - 2026.3
日本磁気学会企画委員 Domestic

2021.4 - 2025.3

Academic Activities

座長

Role(s)： Planning, management, etc.

日本磁気学会第48回学術講演会 2024.9

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Type：Academic society, research group, etc.
受付係

日本磁気学会第47回学術講演会（ Japan ） 2023.9

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Type：Competition, symposium, etc.
座長

第84回応用物理学会秋季学術講演会（ Japan ） 2023.9

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Type：Competition, symposium, etc.
座長

日本磁気学会第46回学術講演会（ Japan ） 2023.9

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Type：Competition, symposium, etc.
チーフオーガナイザ

第28回日本磁気学会初等磁気工学講座（ Japan ） 2023.5

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Type：Competition, symposium, etc.
座長

第75回電気・情報関係学会九州支部連合大会（ Japan ） 2022.9

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Type：Competition, symposium, etc.
座長

電気関係学会九州支部第74回連合大会（ Japan ） 2021.9

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Type：Competition, symposium, etc.
座長

第45回　日本磁気学会学術講演会（ Japan ） 2021.8 - 2021.9

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Type：Competition, symposium, etc.
座長

Spin-RNJ 若手オンライン研究発表会（ Japan ） 2020.6

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Type：Competition, symposium, etc.
座長

平成30年度応用物理学会九州支部学術講演会（ Japan ） 2018.12

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Type：Competition, symposium, etc.
会場係

第41回日本磁気学会学術講演会（ Japan ） 2017.9

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Type：Competition, symposium, etc.

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Research Projects

Investigations of magnetic multilayer film ink for printed spintronics

Grant number：25K00039 2025.4 - 2028.3

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

黒川雄一郎

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Authorship：Principal investigator Grant type：Scientific research funding

インクジェット印刷技術は高速かつ大量生産可能なデバイスのパターニング技術を提供するものであり，トリリオンセンサーを実現するプロセス技術として重要である．一方で，更なる高性能デバイス開発の為には，ナノサイズの厚みを持つ多層薄膜の印刷技術が必要である．この解決の為，本研究ではスパッタ法で作製したナノ薄膜をフレーク状にすることでナノ多層膜インクを開発する．次に，ナノ多層膜インクの物性と印刷との間の関係性を調べ，学術的知見を蓄積することで，ナノ多層膜インクの印刷技術の為の指導原理を確立する．

CiNii Research
インクジェットプリンタで作製する高感度巨大磁気抵抗デバイス

2024.4 - 2025.4

池谷科学技術振興財団単年度研究助成

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Authorship：Principal investigator Grant type：Donation
高度な柔軟性を有するIoTスピンデバイス開発（加速フェーズ)

2024

JST Strategic Basic Research Program (Ministry of Education, Culture, Sports, Science and Technology)

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Authorship：Principal investigator Grant type：Contract research
研究助成/大面積オールプリンテッドスピンゼーベック熱電変換デバイスの開発

2023

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Grant type：Donation
研究助成/自由に設計可能なプリンタブル回路を用いた不揮発性フレキシブルレーストラックメモリ実装の試み

2023

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Grant type：Donation
情報キャリア磁気準粒子の制御に関する共同研究

Grant number：22KK0056 2022 - 2026

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Fostering Joint International Research (B)

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Authorship：Coinvestigator(s) Grant type：Scientific research funding
水素化により制御されたスピンネットワークを利用した万能なニューロモルフィックシステム

2022 - 2024

日本-台湾研究交流「AIシステム構成に資するナノエレクトロニクス技術」

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Authorship：Coinvestigator(s) Grant type：Contract research
逆スピンホール効果による電流と三次元スピン偏極分布の同時測定

Grant number：21K05015 2021 - 2023

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

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Authorship：Coinvestigator(s) Grant type：Scientific research funding
高度な柔軟性を有するIoTスピンデバイス開発

2021 - 2023

JST Strategic Basic Research Program (Ministry of Education, Culture, Sports, Science and Technology)

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Authorship：Principal investigator Grant type：Contract research
二成分スピントルク項に基づく希土類フェリ磁性薄膜中スピントルクの新解釈

Grant number：21K14487 2021 - 2022

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Early-Career Scientists

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Authorship：Principal investigator Grant type：Scientific research funding
二成分スピントルク項に基づく希土類フェリ磁性薄膜中スピントルクの新解釈

Grant number：21K14487 2021 - 2022

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Early-Career Scientists

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Authorship：Principal investigator Grant type：Scientific research funding
工学研究奨励援助金/多層磁気記録層を有する大容量3次元磁性細線メモリの開発

2021

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Grant type：Donation
研究助成金/無給電温度・ガスセンシングのための薄型スピンゼーベック熱発電素子の作製(継続)

2021

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Grant type：Donation
無給電温度・ガスセンシングのための薄型スピンゼーベック熱発電素子の作製

2020

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Grant type：Donation
電流-磁区経路分離型磁壁移動スピンロジックによる不揮発性論理回路の開発

Grant number：18K13805 2018 - 2019

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Early-Career Scientists

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Authorship：Principal investigator Grant type：Scientific research funding
マツダ研究助成/ナノピラー型磁性細線を利用した大容量三次元磁壁移動型細線メモリの実現の試み

2018

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Grant type：Donation
研究助成/磁性細線メモリの熱アシストによる高性能化

2017

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Grant type：Donation
単年度研究助成/重金属サンドイッチ構造を利用した二重スピントルクによる磁壁移動の研究

2017

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Grant type：Donation
希土類アモルファス磁性体を用いたスピンゼーベック熱電変換の研究

2017

平成２９年度エネルギー研究教育機構若手研究者・博士課程学生支援プログラム

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Authorship：Principal investigator Grant type：On-campus funds, funds, etc.

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Educational Activities

電気情報工学実験 2
電気情報工学基礎実験

Class subject

電気情報工学基礎実験

2017.10 - Present Second semester
電気情報工学実験２

2017.10 - Present Second semester

FD Participation

2025.5 Role：Participation Title：【シス情FD】若手教員の研究紹介⑪

Organizer：[Undergraduate school/graduate school/graduate faculty]
2023.11 Role：Participation Title：【シス情FD】企業等との共同研究の実施増加に向けて

Organizer：[Undergraduate school/graduate school/graduate faculty]
2023.4 Role：Participation Title：【シス情FD】若手教員による研究紹介⑧

Organizer：[Undergraduate school/graduate school/graduate faculty]
2023.3 Role：Participation Title：【シス情FD】独・蘭・台湾での産学連携を垣間見る-Industy 4.0・量子コンピューティング・先端半導体-

Organizer：[Undergraduate school/graduate school/graduate faculty]
2022.10 Role：Participation Title：【シス情FD】若手教員による研究紹介⑥

Organizer：[Undergraduate school/graduate school/graduate faculty]
2022.7 Role：Participation Title：【シス情FD】若手教員による研究紹介⑤

Organizer：[Undergraduate school/graduate school/graduate faculty]
2022.5 Role：Participation Title：【シス情FD】若手教員による研究紹介④「量子コンピュータ・システム・アーキテクチャの研究～道具になることを目指して～」

Organizer：[Undergraduate school/graduate school/graduate faculty]
2022.4 Role：Participation Title：【シス情FD】第4期中期目標・中期計画等について

Organizer：[Undergraduate school/graduate school/graduate faculty]
2022.1 Role：Participation Title：【シス情FD】シス情関連の科学技術に対する国の政策動向（に関する私見）

Organizer：[Undergraduate school/graduate school/graduate faculty]
2021.11 Role：Participation Title：【シス情FD】若手教員による研究紹介　及び　研究費獲得のポイント等について③

Organizer：[Undergraduate school/graduate school/graduate faculty]
2021.9 Role：Participation Title：博士後期課程の充足率向上に向けて

Organizer：[Undergraduate school/graduate school/graduate faculty]
2021.7 Role：Speech Title：若手教員による研究紹介　及び　科研取得のポイント、その他について　②

Organizer：[Undergraduate school/graduate school/graduate faculty]
2021.6 Role：Participation Title：若手教員による研究紹介　及び　科研取得のポイントについて　①

Organizer：[Undergraduate school/graduate school/graduate faculty]
2021.5 Role：Participation Title：先導的人材育成フェローシップ事業(情報・AI分野)について

Organizer：[Undergraduate school/graduate school/graduate faculty]
2020.10 Role：Participation Title：2020年度ユニバーシティ・デザイン・ワークショップの報告

Organizer：[Undergraduate school/graduate school/graduate faculty]
2020.9 Role：Participation Title：電気情報工学科総合型選抜（AO入試）について

Organizer：[Undergraduate school/graduate school/graduate faculty]
2020.7 Role：Participation Title：アフターコロナの大学はどうあるべきか

Organizer：[Undergraduate school/graduate school/graduate faculty]
2020.6 Role：Participation Title：どんな3ポリシーが、どのように役立つのかｰ九州大学カリキュラム・マップの威力 -

Organizer：[Undergraduate school/graduate school/graduate faculty]
2020.5 Role：Participation Title：オンサイト授業 vs. オンライン授業：分かったこと，変わったこと

Organizer：[Undergraduate school/graduate school/graduate faculty]
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）

Organizer：[Undergraduate school/graduate school/graduate faculty]
2020.4 Role：Participation Title：新型コロナウイルスが誘起した社会変化に対するシステム情報科学からの提言

Organizer：[Undergraduate school/graduate school/graduate faculty]
2020.2 Role：Participation Title：九州大学工学系改組の現状と今後の予定

Organizer：[Undergraduate school/graduate school/graduate faculty]
2018.11 Role：Participation Title：科学技術基本政策の今と未来

Organizer：[Undergraduate school/graduate school/graduate faculty]
2017.4 Role：Participation Title：新任教員の研修

Organizer：University-wide

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Social Activities

中学生の科学実験教室

Role(s)：Lecturer

2024.8

Activities contributing to policy formation, academic promotion, etc.

2019.11 6U-HAPPIER

6大学助教を対象としたリーダー的素養を学び合う『交流会』

Travel Abroad

2019.4 - 2019.9

Staying countory name 1：United States Staying institution name 1：massachusetts institute of technology
2018.5 - 2018.9

Staying countory name 1：Germany Staying institution name 1：Johannes Gutenberg-Universität Mainz