发明授权
- 专利标题: Magneto-optical recording medium simplifying transfer of magnetic domain
- 专利标题(中): 磁光记录介质简化了磁畴的传输
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申请号: US09208853申请日: 1998-12-10
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公开(公告)号: US06370089B1公开(公告)日: 2002-04-09
- 发明人: Atsushi Yamaguchi , Kenichiro Mitani
- 申请人: Atsushi Yamaguchi , Kenichiro Mitani
- 优先权: JP9-342886 19971212; JP10-040533 19980223
- 主分类号: G11B1100
- IPC分类号: G11B1100
摘要:
A magneto-optical recording medium including a substrate, a reproducing layer formed on the substrate, an intermediate layer formed on the reproducing layer, a recording layer formed on the intermediate layer and a high magnetization layer formed on the recording layer. The intermediate layer is made of a non-magnetic material, and set at a prescribed thickness so that a leakage magnetic field from the recording layer to the reproducing layer is so distributed that the intensity thereof is increased from an end to the center of its domain. The high magnetization layer is made of an alloy or a multilayer film of a noble metal and a transition metal having saturation magnetization stronger than that of the recording layer under a reproducing temperature. At room temperature, the coercive force of the recording layer is larger than that of the high magnetization layer. Consequently, transfer/enlargement from the recording layer to the reproducing layer is readily caused in this magneto-optical recording medium.
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