发明授权
- 专利标题： Method of making ferromagnetic ultrafine particles
- 专利标题（中）： 制备铁磁超细颗粒的方法
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申请号： US856370申请日： 1992-03-23
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公开(公告)号： US5221322A公开(公告)日： 1993-06-22
- 发明人: Yasumichi Tokuoka , Jiro Yoshinari
- 申请人： Yasumichi Tokuoka , Jiro Yoshinari
- 申请人地址： JPX Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-334196 19881229; JPX63-331486 19881230; JPX1-207555 19890810
- 主分类号： B22F9/12
- IPC分类号： B22F9/12 ; B22F9/28 ; G11B5/706 ; H01F1/11
摘要：
Ultrafine particles of Fe-Co-P material with a Fe/Co atomic ratio of from 95/5 to 70/30 and a (Fe+Co)/P atomic ratio of from 85/15 to 60/40 show improved ferromagnetic properties. The average particle size is from 0.005 to 0.1 .mu.m. Such ultrafine particles are prepared through gas phase reaction by evaporating a source material. They are useful in both magnetic and thermomagnetic recording media ensuring high density recording.
公开/授权文献
- US5838133A Switched reluctance motor controller 公开/授权日：1998-11-17
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