发明授权
- 专利标题： Magneto optical recording medium
- 专利标题（中）： 磁光记录介质
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申请号： US832373申请日： 1986-02-24
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公开(公告)号： US4690861A公开(公告)日： 1987-09-01
- 发明人: Hitoshi Nakamura , Yujiro Kaneko , Yasuo Sawada , Hajime Machida , Fumiya Omi , Atsuyuki Watada
- 申请人： Hitoshi Nakamura , Yujiro Kaneko , Yasuo Sawada , Hajime Machida , Fumiya Omi , Atsuyuki Watada
- 申请人地址： JPX Tokyo
- 专利权人： Ricoh Co., Ltd.
- 当前专利权人： Ricoh Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX60-46647 19850311
- 主分类号： G11B11/10
- IPC分类号： G11B11/10 ; C09D5/23 ; G11B11/105 ; H01F10/20 ; G11B9/00
摘要：
A magneto optical recording medium comprising laminating a reflective layer, a dielectric undercoat layer and a hexagonal magnetoplumbite-type metal oxide magnetic layer on a substrate in order, characterized by that said magnetic layer is made an excellently C axis - orientated perpendicular magnetic film by putting the crystal misfit between said reflective layer and said dielectric undercoat layer formed thereon within .+-.30% and the crystal misfit between said dielectric undercoat layer and said hexagonal magnetoplumbite -type metal oxide magnetic layer formed thereon within .+-.30%, and thus various characteristics are widely improved.