Zobrazeno 1 - 10
of 312
pro vyhledávání: '"Osamu Kitakami"'
Autor:
Nguyen Tat Trung, Mohammad Ikram Hossain, Md Iftekharul Alam, Atsushi Ando, Osamu Kitakami, Nobuaki Kikuchi, Tsuyoshi Takaoka, Yasuyuki Sainoo, Ryuichi Arafune, Tadahiro Komeda
Publikováno v:
ACS Omega, Vol 5, Iss 43, Pp 28108-28115 (2020)
Externí odkaz:
https://doaj.org/article/cb59eb636a1b49a1bda928d3be66c84f
Autor:
Takahiro Yomogita, Nobuaki Kikuchi, Satoshi Okamoto, Osamu Kitakami, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono, Keiko Hioki, Atsushi Hattori
Publikováno v:
AIP Advances, Vol 9, Iss 12, Pp 125052-125052-4 (2019)
Magnetization reversal in a permanent magnet takes place through multiple and simultaneous events of nucleation and domain wall depinning. Thus, detection and analysis of elemental magnetization reversal events are essentially important to understand
Externí odkaz:
https://doaj.org/article/79279e69212d4bf3b03fb99cf66bb7e0
Autor:
Hideo Kaiju, Taro Nagahama, Shun Sasaki, Toshihiro Shimada, Osamu Kitakami, Takahiro Misawa, Masaya Fujioka, Junji Nishii, Gang Xiao
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
Abstract Magnetocapacitance (MC) effect, observed in a wide range of materials and devices, such as multiferroic materials and spintronic devices, has received considerable attention due to its interesting physical properties and practical applicatio
Externí odkaz:
https://doaj.org/article/1f68e4b39a804eca8998ece12e570d43
Autor:
Takuya Ono, Hitoshi Nakata, Tomohiro Moriya, Nobuaki Kikuchi, Satoshi Okamoto, Osamu Kitakami, Takehito Shimatsu
Publikováno v:
AIP Advances, Vol 6, Iss 5, Pp 056011-056011-5 (2016)
In L10 (fct)-FePt thin films, both tuning Fe and Pt concentrations and substitution with third-metal were studied for magnetic characteristic optimization. We investigated single-crystalline FePt-X (X = Mn, Ni, Cu) thin films grown epitaxially on MgO
Externí odkaz:
https://doaj.org/article/13937bb130bd41469eb449eb5d8cda94
Autor:
Tadakatsu Ohkubo, Osamu Kitakami, Nobuaki Kikuchi, Satoshi Okamoto, Yukiko Takahashi, Hossein Sepehri-Amin, K. Hioki, Takahiro Yomogita, Kazuhiro Hono, A. Hattori
Publikováno v:
Acta Materialia. 201:7-13
Although the magnetization reversal process in the permanent magnets has long been studied, it has not been fully revealed. The recent progress of the computational science realizes the atomistic calculations for the thermally activated magnetization
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7049c6021fd1fd186d08b2ff7b338295
https://doi.org/10.1016/j.actamat.2020.09.074
https://doi.org/10.1016/j.actamat.2020.09.074
Autor:
Mohammad Ikram Hossain, Atsushi Ando, Nobuaki Kikuchi, Ryuichi Arafune, Osamu Kitakami, Nguyen Tat Trung, Tadahiro Komeda, Tsuyoshi Takaoka, Iftekharul Alam, Yasuyuki Sainoo
Publikováno v:
ACS Omega, Vol 5, Iss 43, Pp 28108-28115 (2020)
ACS Omega
ACS Omega
We report a precise measurement of the sensor behavior of the field effect transistor (FET) formed with the MoS2 channel when the channel part is exposed to Cl2 gas. The gas exposure and the electrical measurement of the MoS2 FET were executed with i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee5261c47b23cfb6dc00bf3bd71720ad
https://doaj.org/article/cb59eb636a1b49a1bda928d3be66c84f
https://doaj.org/article/cb59eb636a1b49a1bda928d3be66c84f
Autor:
David Billington, Kazunori Miyazawa, Kazuhiro Hono, Yoshinori Kotani, Yukio Takada, Tetsuya Nakamura, Osamu Kitakami, Nobuaki Kikuchi, Satoshi Okamoto, T. Sato, Yuji Kaneko, Taisuke Sasaki, Akira Kato, Kentaro Toyoki, Takahiro Yomogita, Tadakatsu Ohkubo
Publikováno v:
Acta Materialia. 178:90-98
A Ga-doped Nd-Fe-B sintered magnet has attracted significant attention as a heavy-rare-earth-free high-performance magnet. We have studied the temperature dependent magnetization reversal process of a Ga-doped Nd-Fe-B sintered magnet based on the fir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a70bcba9d34f5caccb173b9166b9abea
https://doi.org/10.1016/j.actamat.2019.08.004
https://doi.org/10.1016/j.actamat.2019.08.004
Autor:
Kazunori Miyazawa, Kentaro Toyoki, David Billington, Tadakatsu Ohkubo, Yoshinori Kotani, Kazuhiro Hono, Tetsuya Nakamura, Takahiro Yomogita, Nobuaki Kikuchi, Osamu Kitakami, Satoshi Okamoto, Taisuke Sasaki
Publikováno v:
Acta Materialia. 162:1-9
First-order reversal curve (FORC) diagram, which visualizes the variation of magnetic susceptibility on a field plane, has been applied to a Nd-Fe-B sintered magnet. The FORC diagram exhibits the characteristic behavior of two remarkable spots in low
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::100df8e6a5660ded6077dce05d3f607b
https://doi.org/10.1016/j.actamat.2018.09.053
https://doi.org/10.1016/j.actamat.2018.09.053
Autor:
Parmanand Sharma, Kazuhisa Sato, Satoshi Okamoto, Akihiro Makino, Hiroo Tajiri, Yan Zhang, Osamu Kitakami
Publikováno v:
IEEE Transactions on Magnetics. 54:1-5
There is a growing interest in the development of rare-earth element-free hard magnets. The L10 FeNi phase found in Fe-based meteorites is promising based on its high-magnetocrystalline anisotropy and saturation magnetization. Not only the production
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9811f521c1677d8807221122cf612a7
https://doi.org/10.1109/tmag.2018.2842057
https://doi.org/10.1109/tmag.2018.2842057
Autor:
Satoshi Okamoto, Satoshi Iwata, Osamu Kitakami, Daiki Oshima, Takeshi Kato, Nobuaki Kikuchi, Y. Otaki
Publikováno v:
IEEE Transactions on Magnetics. 54:1-4
[Co (0.29 nm)/Ni (0.71 nm)]10 multilayers were deposited on Ta (30 nm) and Pt (30 nm) buffer layers, and the variation of the magnetization dynamics by the adsorption of Fe3O4 nanoparticles was studied by vector network analyzer—ferromagnetic reson
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1da27eaa6a237fa27c09637a45f32a27
https://doi.org/10.1109/tmag.2018.2832660
https://doi.org/10.1109/tmag.2018.2832660