发明授权
- 专利标题: Method for producing a ferromagnetic chromium oxide
- 专利标题(中): 铁磁性铬氧化物的制造方法
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申请号: US490703申请日: 1974-07-22
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公开(公告)号: US3956151A公开(公告)日: 1976-05-11
- 发明人: Tadashi Kawamata , Eiichi Hirota , Yukio Terada
- 申请人: Tadashi Kawamata , Eiichi Hirota , Yukio Terada
- 申请人地址: JA
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JA
- 优先权: JA48-83408 19730724
- 主分类号: C01G37/027
- IPC分类号: C01G37/027 ; G11B5/706 ; H01F1/11 ; C01G37/02 ; C04B35/12
摘要:
A method for producing, under a low pressure such as an ambient atmospheric pressure, a ferromagnetic chromium oxide having a sufficiently high saturation magnetization and, if necessary, sufficiently high coercive force as well. The main feature of this method is to use H.sub.2 O.sub.2 in conjunction with CrO.sub.3 and, if necessary, Te, Sb or an alkali element as well and to heat them.
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