发明名称 |
Thin film magnetic recording film |
摘要 |
A thin film magnetic recording disc is provided wherein the magnetic layer is an alloy of cobalt and platinum disposed on a chromium layer. A barrier layer of chromium is formed on the cobalt-platinum film and a wear layer of an oxide of cobalt is provided on the barrier layer. The platinum content in the magnetic film is varied so as to provide a magnetic film with a desired coercivity which is significantly less dependent upon film thickness. This permits the cobalt-platinum film thickness to be adjusted to meet a wide range of recording system design parameters. The coercivity of the magnetic film may be determined primarily by the amount of platinum in the alloy and the saturation magnetization-thickness product of the film is determined primarily by the film thickness.
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申请公布号 |
US4631202(A) |
申请公布日期 |
1986.12.23 |
申请号 |
US19860853870 |
申请日期 |
1986.04.21 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
OPFER, JAMES E.;NATARAJAN, BANGALORE R. |
分类号 |
G11B5/64;G11B5/73;(IPC1-7):H01F10/02 |
主分类号 |
G11B5/64 |
代理机构 |
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代理人 |
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