发明名称 |
Perpendicular magnetic recording medium and manufacturing method thereof |
摘要 |
A perpendicular magnetic recording medium comprises a recording medium base, a low coercivity layer formed on the recording medium base and having a low coercivity in an in-plane direction thereof, and a high coercivity layer formed on the low coercivity layer and having a high coercivity in a direction perpendicular to a surface of the low coercivity layer. The low coercivity layer and the high coercivity layer are formed from the same magnetic material and constitute a magnetic layer. A method of manufacturing this perpendicular magnetic recording medium comprises a single magnetic layer forming process of successively and continuously forming the low coercivity layer and the high coercivity layer on the recording medium base by using the same magnetic material as a depositing material.
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申请公布号 |
US4731300(A) |
申请公布日期 |
1988.03.15 |
申请号 |
US19860834236 |
申请日期 |
1986.02.26 |
申请人 |
VICTOR COMPANY OF JAPAN, LTD. |
发明人 |
WATANABE, NOBORU;ISHIZAKA, YASUO;KIMURA, KAZUO;IMAOKA, EIICHIRO |
分类号 |
G11B5/66;(IPC1-7):G11B5/66 |
主分类号 |
G11B5/66 |
代理机构 |
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主权项 |
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地址 |
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