发明名称 |
MAGNETO-OPTICAL RECORDING MEDIUM |
摘要 |
A magneto-optical recording medium is provided which has high magneto-optic effect even under a short-wavelength light, high anisotropy in the direction perpendicular to the film surface, and permits high-density recording, the medium having a first magnetic layer laminated onto a second magnetic layer, the first magnetic layer being a rare-earth-transition-metal amorphous film with mainly a light rare-earth element as rare-earth element, the light rare-earth element being at least one element selected from an element group consisting of Nd and Pr, and the second magnetic layer being a rare-earth-transition-metal amorphous film with at least one element selected from an element group consisting of Tb and Dy as rare-earth element. |
申请公布号 |
CA2017300(A1) |
申请公布日期 |
1991.03.20 |
申请号 |
CA19902017300 |
申请日期 |
1990.05.22 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
KATO, YOSHIMINE;SHIMIZU, TERUHISA;TAKAYAMA, SHINJI;TANAKA, HIROSHI |
分类号 |
G11B11/10;G11B11/105 |
主分类号 |
G11B11/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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