Yuki Hisamatsu
University of Tsukuba
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Yuki Hisamatsu.
Applied Physics Express | 2015
Masaki Nagata; Takahiro Moriyama; Kenji Tanabe; Kensho Tanaka; Daichi Chiba; Jun-ichiro Ohe; Yuki Hisamatsu; Tomohiko Niizeki; Hideto Yanagihara; Eiji Kita; Teruo Ono
Spin motive force (SMF) is induced by a time and spatial derivative of magnetizations and is dependent on spin polarization. We compare the SMF in FeNi with positive spin polarization with that in a magnetite (Fe3O4) with negative spin polarization. We observe the SMF induced by a nonuniform ferromagnetic resonance in Fe3O4 and find that the SMF in Fe3O4 is opposite to that in FeNi. This result originates from the negative spin polarization of Fe3O4. Our clear observation of the SMF depending on the sign of the spin polarization agrees well with the framework of the SMF theory.
Japanese Journal of Applied Physics | 2017
Ritesh Patel; Takeshi Tainosho; Yuki Hisamatsu; Sonia Sharmin; Eiji Kita; Hideto Yanagihara
We report the optimum conditions for the epitaxial growth of Co x Fe3− x O4 (CFO) (111) thin films with x = 0.75 on an α-Al2O3(0001) substrate via reactive RF magnetron sputtering. The lattice strain evaluated by X-ray diffraction measurements is as small as 0.11% in spite of the large lattice mismatch between CFO(111) and α-Al2O3(0001). The CFO(111) thin films grown under the optimal conditions exhibit magnetic anisotropy with the easy axis of magnetization perpendicular to the films. The induced uniaxial anisotropy energy can be quantitatively explained by the magnetoelastic effect.
The Japan Society of Applied Physics | 2018
Hiroki Koizumi; Takeshi Tainosho; Hiroshige Onoda; Yuki Hisamatsu; Hideto Yanagihara
The Japan Society of Applied Physics | 2018
Yang Liu; Yuki Hisamatsu; Isao Harayama; Sonia Sharmin; Daiichiro Sekiba; Daiki Oshima; Takeshi Kato; S. Iwata; Eiji Kita; Hideto Yanagihara
IEEE Transactions on Magnetics | 2018
Ritesh Patel; Y. Ikeda; Hiroshige Onoda; Takeshi Tainosho; Yuki Hisamatsu; Sonia Sharmin; Eiji Kita; Hideto Yanagihara
The Japan Society of Applied Physics | 2017
Hiroshige Onoda; Yuki Hisamatsu; J. Inoue; Hiroaki Sukegawa; Hideto Yanagihara
The Japan Society of Applied Physics | 2017
Hiroki Koizumi; Tainosho Takeshi; Hiroshige Onoda; Yuki Hisamatsu; Hideto Yanagihara
The Japan Society of Applied Physics | 2016
Ritesh Patel; Takeshi Tainosho; Yuki Hisamatsu; Sonia Sharmin; Hideto Yanagihara; Eiji Kita
The Japan Society of Applied Physics | 2016
Yang Liu; Yuki Hisamatsu; Hideto Yanagihara; Daiki Oshima; Takeshi Katoh; S. Iwata; Ko Mibu; Eiji Kita
ieee international magnetics conference | 2015
Yuki Hisamatsu; Tomohiko Niizeki; Hideto Yanagihara; Eiji Kita
