发明授权
- 专利标题： Overwritable magnetooptical recording element including first and second magnetic layers, with one of which containing zirconium
- 专利标题（中）： 可覆盖的磁光记录元件包括第一和第二磁性层，其中一个含有锆
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申请号： US571363申请日： 1990-08-23
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公开(公告)号： US5069984A公开(公告)日： 1991-12-03
- 发明人: Tukaram K. Hatwar , Anthony C. Palumbo, Jr. , Douglas G. Stinson
- 申请人： Tukaram K. Hatwar , Anthony C. Palumbo, Jr. , Douglas G. Stinson
- 申请人地址： NY Rochester
- 专利权人： Eastman Kodak Company
- 当前专利权人： Eastman Kodak Company
- 当前专利权人地址： NY Rochester
- 主分类号： G11B11/10
- IPC分类号： G11B11/10 ; G11B11/105
摘要：
A multilayer, direct-overwrite, magnetooptic recording element comprises first and second layers of magnetic materials having different magnetic coercivities and Curie temperatures. According to the invention, one of the two magnetic layers is doped with zirconium. The addition of zirconium has the effect of substantially lowering the Curie temperature of the doped layer, thereby enlarging the Curie temperature differential between the magnetic layers. The zirconium additive also has the effect of stabilizing the magnetic properties of the doped layer.
公开/授权文献
- US5894994A Adjustable slot coating die 公开/授权日：1999-04-20