发明名称 |
Magnetisches Aufzeichnungsmedium und Verfahren zu seiner Herstellung |
摘要 |
A magnetic recording medium having a nonmagnetic substrate, a first magnetic layer which is formed on a surface of the substrate, has an axis of easy magnetization slanting from a normal line of a layer plane, contains cobalt and oxygen in an amount of not more than 40 atomic % and has a thickness of not larger than 0.15 mu m, and a second magnetic layer which is formed on a surface of the first magnetic layer, contains cobalt, has an axis of easy magnetization slanting from a normal line of a layer plane, contains oxygen in an amount of not larger than 37 atomic % and from 61 % to 99 % of the oxygen concentration in the first layer, and has a thickness of not larger than 0.15 mu m, which medium has a large S/N ratio. <IMAGE> |
申请公布号 |
DE69309779(T2) |
申请公布日期 |
1997.08.07 |
申请号 |
DE1993609779T |
申请日期 |
1993.06.03 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., KADOMA, OSAKA, JP |
发明人 |
SUGITA, RYUJI;TOHMA, KIYOKAZU;ISHIDA, TATSUAKI, SAKAI-SHI, OSAKA-FU, JP;BAN, YASUAKI |
分类号 |
G11B5/64;G11B5/65;G11B5/66;G11B5/73;G11B5/738;G11B5/85;(IPC1-7):G11B5/66 |
主分类号 |
G11B5/64 |
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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