发明授权
- 专利标题： Magnetic recording medium
- 专利标题（中）： 磁记录介质
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申请号： US30600申请日： 1987-03-27
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公开(公告)号： US4786553A公开(公告)日： 1988-11-22
- 发明人: Yoshihiro Shiroishi , Sadao Hishiyama , Hiroyuki Suzuki , Norikazu Tsumita , Tsuneo Suganuma , Yoshio Gobara , Masaaki Hayashi , Makoto Sano , Takaaki Shirakura
- 申请人： Yoshihiro Shiroishi , Sadao Hishiyama , Hiroyuki Suzuki , Norikazu Tsumita , Tsuneo Suganuma , Yoshio Gobara , Masaaki Hayashi , Makoto Sano , Takaaki Shirakura
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-68327 19860328; JPX61-68329 19860328; JPX61-306421 19861224
- 主分类号： G11B5/64
- IPC分类号： G11B5/64 ; H01F10/10 ; H01F10/26
摘要：
A magnetic recording medium comprises a non-magnetic substrate and a thin magnetic film, the thin magnetic film being composed mainly of Co, Ni and at least one of Zr and Hf, and a concentration of Zr, Hf or Zr and Hf as contained in the thin magnetic film being 0.1 to 30% by atom on the basis of the total of Co and Ni, and has a considerably higher corrosion resistance than that of the conventional magnetic recording medium having a thin Co-Ni magnetic film.
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