Index Catalog // MDR

Description/Abstract:: Understanding magnetic damping behavior at finite temperatures is crucial for magnetization reversal, especially in heat-assisted magneti...
Keyword:: First-principles calculations, Lattice dynamics, Magnetization dynamics, Spin-orbit torque
Resource Type:: Article
Author:: Ivan Kurniawan, Yoshio Miura, Guangzong Xing, Terumasa Tadano, and Kazuhiro Hono
Journal:: Physical Review B
Date Uploaded:: 24/05/2024

Description/Abstract:: We study interfacial magnetocrystalline anisotropies in various Fe/semiconductor heterostructures by means of first-principles calculatio...
Keyword:: Magnetic anisotropy, Magnetic tunnel junction, and Spintronics
Resource Type:: Article
Author:: Keisuke Masuda, Shinya Kasai, Yoshio Miura, and Kazuhiro Hono
Journal:: Physical Review B
Date Uploaded:: 11/04/2024

Description/Abstract:: The nanocrystalline structure and soft magnetic properties of melt-spun Fe-B-P-Cu ribbons are largely influenced by heating rates for cry...
Keyword:: atom probe tomography
Resource Type:: Article
Author:: Yohei Nomura, Jun Uzuhashi, Tatsuya Tomita, Toru Takahashi, Hidenori Kuwata, Taichi Abe, Tadakatsu Ohkubo, and Kazuhiro Hono
Journal:: Journal of Alloys and Compounds
Date Uploaded:: 29/03/2024

Description/Abstract:: The compositional and structural investigations of threading dislocations (TDs) in InGaN/GaN multiple quantum wells were carried out usin...
Keyword:: InGaN, atom probe tomography, dislocation, pipe diffusion, and transmission electron microscopy
Resource Type:: Article
Author:: Yudai Yamaguchi, Yuya Kanitani, Yoshihiro Kudo, Jun Uzuhashi, Tadakatsu Ohkubo, Kazuhiro Hono, and Shigetaka Tomiya
Journal:: NANO LETTERS
Date Uploaded:: 04/10/2023
Date Modified:: 04/10/2023

Description/Abstract:: Behaviors of vacancy-type defects in ion-implanted GaN were studied by means of positron annihilation. Si or Mg ions were implanted into ...
Keyword:: gallium nitride, positron, and vacancy
Resource Type:: Article
Author:: Akira Uedono, Hideki Sakurai, Jun Uzuhashi, Tetsuo Narita, Kacper Sierakowski, Shoji Ishibashi, Shigefusa F. Chichibu, Michal Bockowski, Jun Suda, Tadakatsu Ohokubo, Nobuyuki Ikarashi, Kazuhiro Hono, and Tetsu Kachi
Journal:: Proceedings of SPIE - The International Society for Optical Engineering
Date Uploaded:: 04/10/2023
Date Modified:: 04/10/2023

Description/Abstract:: We used atomic-scale direct observations by transmission electron microscopy (TEM) and atom probe tomography to clarify the crystallograp...
Keyword:: atom probe tomography, gallium nitride, and transmission electron microscopy
Resource Type:: Article
Author:: Emi Kano, Keita Kataoka, Jun Uzuhashi, Kenta Chokawa, Hideki Sakurai, Akira Uedono, Tetsuo Narita, Kacper Sierakowski, Michal Bockowski, Ritsuo Otsuki, Koki Kobayashi, Yuta Itoh, Masahiro Nagao, Tadakatsu Ohkubo, Kazuhiro Hono, Jun Suda, Tetsu Kachi, and Nobuyuki Ikarashi
Journal:: JOURNAL OF APPLIED PHYSICS
Date Uploaded:: 28/09/2023
Date Modified:: 28/09/2023

Description/Abstract:: A huge magnetoresistance (MR) ratio exceeding 2000% at cryogenic temperature that was reported for half-metallic Heusler alloy based magn...
Keyword:: spintronics, half-metal, Heusler alloy, machine learning, disordered local moment, Bayesian optimization
Resource Type:: Article
Author:: Ivan Kurniawan, Yoshio Miura, and Kazuhiro Hono
Journal:: Physical Review Materials
Date Uploaded:: 10/07/2023

Description/Abstract:: An area selective doping via ion implantation is a key technology to realize gallium nitride (GaN) based energy-efficient power devices; ...
Keyword:: atom probe tomography, cathodoluminescence, gallium nitride, implantation, and scanning transmission electron microscopy
Resource Type:: Article
Author:: Jun Uzuhashi, Jun Chen, Ashutosh Kumar, Wei Yi, Tadakatsu Ohkubo, Ryo Tanaka, Shinya Takashima, Masaharu Edo, Kacper Sierakowski, Michal Bockowski, Hideki Sakurai, Tetsu Kachi, Takashi Sekiguchi, and Kazuhiro Hono
Journal:: JOURNAL OF APPLIED PHYSICS
Date Uploaded:: 04/07/2023

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