Zobrazeno 1 - 10
of 258
pro vyhledávání: '"Akimasa, Sakuma"'
Autor:
Seiji Miyashita, Masamichi Nishino, Yuta Toga, Taichi Hinokihara, Ismail Enes Uysal, Takashi Miyake, Hisazumi Akai, Satoshi Hirosawa, Akimasa Sakuma
Publikováno v:
Science and Technology of Advanced Materials, Vol 22, Iss 1, Pp 658-682 (2021)
To study the temperature dependence of magnetic properties of permanent magnets, methods of treating the thermal fluctuation causing the thermal activation phenomena must be established. To study finite-temperature properties quantitatively, we need
Externí odkaz:
https://doaj.org/article/4369a53b929d4b6ca3a8fb097a0ac5f7
Autor:
Akimasa Sakuma
Publikováno v:
Journal of Applied Physics. 133
Herein, the first-principles technique combined with a coherent potential approximation is utilized to investigate the magnetic anisotropy energy (MAE) of (Fe1-xCox)16(N,C)2 alloys. The alloys contain an ordered α″-phase and partially ordered α
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9920d55d3344efaea249307a072ebad0
https://doi.org/10.1063/5.0148954
https://doi.org/10.1063/5.0148954
Publikováno v:
Journal of the Physical Society of Japan. 92
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2a73db902ce4c3759f2f17afcc0a647
https://doi.org/10.7566/jpsj.92.044704
https://doi.org/10.7566/jpsj.92.044704
Autor:
Seiji MIYASHITA, Masamichi NISHINO, Yuta TOGA, Taichi HINOKIHARA, Ismail Enes UYSAL, Takashi MIYAKE, Hisazumi AKAI, Satoshi HIROSAWA, Akimasa SAKUMA
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 69:S126-S146
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ae903c7a9763577b8ea2f62f58d2de7
https://doi.org/10.2497/jjspm.69.s126
https://doi.org/10.2497/jjspm.69.s126
Autor:
Daisuke Miura, Akimasa Sakuma
Publikováno v:
AIP Advances, Vol 8, Iss 7, Pp 075114-075114-8 (2018)
We perform phenomenological analysis of the temperature dependence of magnetocrystalline anisotropy (MA) in rare-earth magnets. We define the phenomenological power laws applicable to compound magnets using the Zener theory, and we apply these laws t
Externí odkaz:
https://doaj.org/article/78f96b537afd469e9fb50c0dc198f639
Autor:
Yuta Toga, Takashi Miyake, Satoshi Hirosawa, Ismail Enes Uysal, Hisazumi Akai, Masamichi Nishino, Akimasa Sakuma, Taichi Hinokihara, Seiji Miyashita
Publikováno v:
Science and Technology of Advanced Materials, Vol 22, Iss 1, Pp 658-682 (2021)
To study the temperature dependence of magnetic properties of permanent magnets, methods of treating the thermal fluctuation causing the thermal activation phenomena must be established. To study finite-temperature properties quantitatively, we need
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e63346af01d89f4fc7a7473f161d68eb
https://doaj.org/article/4369a53b929d4b6ca3a8fb097a0ac5f7
https://doaj.org/article/4369a53b929d4b6ca3a8fb097a0ac5f7
Autor:
Shogo Yamashita, Akimasa Sakuma
Publikováno v:
Journal of the Physical Society of Japan. 91
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ede66e32528f747b79ae3c667456ee48
https://doi.org/10.7566/jpsj.91.093703
https://doi.org/10.7566/jpsj.91.093703
Autor:
Yuta, Sasaki, Ryoya, Hiramatsu, Yohei, Kota, Takahide, Kubota, Yoshiaki, Sonobe, Akimasa, Sakuma, Koki, Takanashi, Shinya, Kasai, Yukiko K, Takahashi
Publikováno v:
Small (Weinheim an der Bergstrasse, Germany). 18(20)
A ferromagnetic metal nanolayer with a large perpendicular magnetic anisotropy, small saturation magnetization, and small magnetic damping constant is a crucial requirement for high-speed spintronic devices. Fabrication of these devices on Si/SiO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::9ceb7107dfe5f64589b1bd6e2a66c857
https://pubmed.ncbi.nlm.nih.gov/35429094
https://pubmed.ncbi.nlm.nih.gov/35429094
Publikováno v:
npj Computational Materials, Vol 6, Iss 1, Pp 1-7 (2020)
The microscopic mechanism of coercivity at finite temperature is a crucial issue for permanent magnets. Here we present the temperature dependence of the coercivity of an atomistic spin model for the highest-performance magnet Nd2Fe14B. For quantitat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8387afbf1834d857c05a29b3a8b96111
http://link.springer.com/article/10.1038/s41524-020-0325-6
http://link.springer.com/article/10.1038/s41524-020-0325-6
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-8 (2020)
Scientific Reports
Scientific Reports
Mn-based alloys exhibit unique properties in the spintronics materials possessing perpendicular magnetic anisotropy (PMA) beyond the Fe and Co-based alloys. It is desired to figure out the quantum physics of PMA inherent to Mn-based alloys, which hav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::baf91d2273fc8292ee4cd25355f6f861
http://link.springer.com/article/10.1038/s41598-020-66432-9
http://link.springer.com/article/10.1038/s41598-020-66432-9