发明名称 |
Perpendicular magnetic recording medium, method for producing the same, and sputtering device |
摘要 |
A magnetic recording medium conventionally utilizes the in-plane magnetization mode, but recently the perpendicular magnetization mode utilizing the perpendicular anisotropy of an hcp cobalt alloy layer, in which the C axis is oriented perpendicular to the layer surface, has been proposed. The known perpendicular magnetic recording medium is produced by means of RF sputtering and comprises a Permalloy layer, as layer of a low coercive-force material, between the nonmagnetic base and the hcp cobalt alloy layer. The perpendicular anisotropy attained by the present invention in very excellent and is superior to that of a perpendicular recording medium having no Permalloy layer because a Co-Ta alloy is used as the layer of a low coercive-force material.
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申请公布号 |
US4842708(A) |
申请公布日期 |
1989.06.27 |
申请号 |
US19870022664 |
申请日期 |
1987.03.06 |
申请人 |
TEIJIN LIMITED |
发明人 |
KADOKURA, SADAO;HONJO, KAZUHIKO;TOMIE, TAKASHI;NAOE, MASAHIKO |
分类号 |
G11B5/66;G11B5/851 |
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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