发明授权
US4883710A Magneto-optical recording medium 失效
磁光记录介质

  • 专利标题: Magneto-optical recording medium
  • 专利标题(中): 磁光记录介质
  • 申请号: US113489
    申请日: 1987-10-28
  • 公开(公告)号: US4883710A
    公开(公告)日: 1989-11-28
  • 发明人: Hajime Machida
  • 申请人: Hajime Machida
  • 申请人地址: JPX Tokyo
  • 专利权人: Ricoh Company, Ltd.
  • 当前专利权人: Ricoh Company, Ltd.
  • 当前专利权人地址: JPX Tokyo
  • 优先权: JPX61-256424 19861028; JPX61-256425 19861028
  • 主分类号: G11B11/105
  • IPC分类号: G11B11/105
Magneto-optical recording medium
摘要:
A magneto-optical recording medium is disclosed, which comprises a substrate, and a magnetic layer supported on the substrate, the magnetic layer comprising (1) a first magnetic layer comprising a magnetic oxide with perpendicular magnetic characteristics, having a saturation magnetization Ms of 100 Gauss or less and a coercive force Hc.sub.1 of 1 KOe or less, and (2) a second magnetic layer comprising a magnetic oxide having a thermal conductivity.times.of less than 0.3 cal/cm.sec..degree.C. and a light absorption coefficient .alpha. of 5.times.10.sup.3 cm.sup.-1 or more. This magneto-optical recording medium may further comprises an auxiliary production layer comprising a magnetic material, which is overlaid adjacent to the first magnetic layer.
公开/授权文献
信息查询
0/0