发明授权
US06690625B2 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: US10132837
    申请日: 2002-04-25
  • 公开(公告)号: US06690625B2
    公开(公告)日: 2004-02-10
  • 发明人: Junji HirokaneNoboru Iwata
  • 申请人: Junji HirokaneNoboru Iwata
  • 优先权: JP2001-133555 20010427
  • 主分类号: G11B1100
  • IPC分类号: G11B1100
Magneto-optical recording medium
摘要:
A magneto-optical recording medium is provided with at least: a recording layer, made of a perpendicular magnetization film, in which magnetized information is recorded in the form of a perpendicular direction of magnetization; a magnetic flux generating layer, made of a perpendicular magnetization film, which is exchange-coupled with the recording layer; and a read-out layer, having a perpendicular magnetization at a predetermined temperature or higher temperatures than the predetermined temperature, which copies the magnetized information of the recording layer by magneto-static coupling with the magnetic flux generating layer and the recording layer, wherein the magnetic flux generating layer is a magnetic film having a lower Curie temperature than that of the recording layer and having a larger total magnetization than that of the recording layer at a temperature at which the read-out layer has a perpendicular magnetization.
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