发明名称 |
Magnetic recording medium |
摘要 |
A magnetic recording medium comprising: a non-magnetic substrate; a Co-based alloy magnetic layer (ML); and a non-magnetic Cr-based underlayer position between said magnetic layer and said substrate, compatibly provided with a high S/N and a high coercive force, and an intermediate layer (IL), formed of a Co-based alloy having the hcp structure, which is positioned between the magnetic layer and the non-magnetic underlayer, said intermediate layer having a ratio R=(BsIL*IL)/(BsML*ML), which is the product (BsIL*IL) of the saturation magnetic flux density (BsIL) of the Co-based alloy which constitutes said intermediate layer and the thickness (tIL) of the intermediate layer film to the product (BsML*ML) of the saturation magnetic flux density (BsML) of the Co-based alloy which constitutes said magnetic layer and the magnetic layer film thickness (tML) at 0.2 or less.
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申请公布号 |
US5736262(A) |
申请公布日期 |
1998.04.07 |
申请号 |
US19950567417 |
申请日期 |
1995.12.05 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
OHKIJIMA, SHIN;OKA, MASAHIRO;YOKOYAMA, FUMIAKI |
分类号 |
G11B5/66;G11B5/73;(IPC1-7):G11B5/66 |
主分类号 |
G11B5/66 |
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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