Katsutoshi Nakagawa
Toshiba
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Publication
Featured researches published by Katsutoshi Nakagawa.
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 1994
Takao Sawa; Katsutoshi Nakagawa
Abstract Soft magnetic properties up to the megahertz range were investigated for Fe(Cr,Nb)SiB amorphous alloys of thickness 6–18 μm prepared by a single-roll method in vacuum. A low magnetic core loss of 1.5–2.0 W cm−3 at 1 MHz and 1 kG was attained by annealing near their crystallization temperatures. The annealing leads to the precipitation of excess α-Fe particles, so the d.c. coercive force changes drastically over 1 Oe. The magnetomechanical resonance effect due to magnetostriction in the initial permeability decreases upon substitution of Fe by Cr or upon annealing at higher temperature.
Archive | 2009
Tsutomu Ishii; Hajime Takeuchi; Yasumasa Ooya; Katsutoshi Nakagawa; Yumi Ito; Masaki Toyoshima; Yasuhiro Shirakawa; Ryo Sakai
Archive | 2006
Tetsuo Inoue; Akira Sato; Katsutoshi Nakagawa
Archive | 2006
Katsutoshi Nakagawa; Tetsuo Inoue; Akira Sato
Archive | 2013
Yasumasa Ooya; Masahiko Yamakawa; Yasuhiro Shirakawa; Katsutoshi Nakagawa
Archive | 2008
Tsutomu Ishii; Yoshitaka Funayama; Yumi Ito; Yasumasa Ooya; Ryo Sakai; Katsutoshi Nakagawa; Hajime Takeuchi; Yasuhiro Shirakawa
Archive | 2009
Tsutomu Ishii; Yasumasa Ooya; Ryo Sakai; Katsutoshi Nakagawa; Hajime Takeuchi; Yumi Ito; Yasuhiro Shirakawa
Archive | 2007
Tsutomu Ishii; Yumi Ito; Katsutoshi Nakagawa; Yasumasa Oya; Akira Sakai; Yasuhiro Shirakawa; Hajime Takeuchi; 勝利 中川; 由美 伊藤; 恭正 大屋; 康博 白川; 努 石井; 肇 竹内; 亮 酒井
Archive | 2003
Takao Sawa; Katsutoshi Nakagawa; Hisashi Takahashi; Teruo Murakami; Masao Obama
Archive | 2001
Takao Sawa; Katsutoshi Nakagawa; Teruo Murakami; Tadahiko Kobayashi; Hisashi Takahashi; Masao Obama
