发明授权
US5326637A Magnetic recording medium having a Co-O magnetic layer, and specified in-plane properties 失效
具有Co-O磁性层的磁记录介质,具有规定的面内特性

  • 专利标题: Magnetic recording medium having a Co-O magnetic layer, and specified in-plane properties
  • 专利标题(中): 具有Co-O磁性层的磁记录介质,具有规定的面内特性
  • 申请号: US24109
    申请日: 1993-02-23
  • 公开(公告)号: US5326637A
    公开(公告)日: 1994-07-05
  • 发明人: Shogo NasuKoji Saiki
  • 申请人: Shogo NasuKoji Saiki
  • 专利权人: Shogo Nasu,Koji Saiki
  • 当前专利权人: Shogo Nasu,Koji Saiki
  • 优先权: JPX2-39199 19900219; JPX2-238688 19900907; JPX2-416992 19901228; JPX3-024090 19910123
  • 主分类号: G11B5/64
  • IPC分类号: G11B5/64 G11B5/66 G11B5/00
Magnetic recording medium having a Co-O magnetic layer, and specified
in-plane properties
摘要:
A magnetic recording medium is disclosed, wherein a magnetic film comprising a partially oxidized cobalt with its in-plane coercive force not less than 500 Oe is provided on a substrate. Further disclosed are megnetic recording media, wherein there is further provided an underlayer comprising Cr, Fe or an Fe-Co alloy under said magnetic film, and wherein a perpendicular magnetic anisotropic film comprising a partially oxidized metal is further provided on said magnetic film. The magnetic recording media of the present invention are high in recording density and reproduction output, low in noise and high in S/N ratio.
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