发明名称 |
Magneto-optical recording medium and process for producing the same |
摘要 |
Disclosed is a magneto-optical recording medium which comprises a transparent substrate and, provided on the substrate, a magneto-optical recording film comprising a perpendicular magnetic film based on rare earth metal-transition metal and an auxiliary magnetic film having spontaneous magnetization which exerts, between itself and the magneto-optical recording film, an exchange coupling force on each other and in which the auxiliary magnetic film used is a magnetic film which readily rotates its magnetization direction toward the external magnetic field in the neighborhood of the Curie temperature of the magneto-optical recording film and has a squareness ratio of not more than 1 in the neighborhood of the Curie temperature, and a process for producing the magneto-optical recording medium.
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申请公布号 |
US5783320(A) |
申请公布日期 |
1998.07.21 |
申请号 |
US19970781711 |
申请日期 |
1997.01.10 |
申请人 |
HITACHI MAXELL, LTD. |
发明人 |
SHIMAZAKI, KATSUSUKE;OHNUKI, SATORU;HASHIMOTO, MASATOSHI;SHIRAI, YOSHINORI;OHTA, NORIO;FUJIWARA, HIDEO;YOSHIHIRO, MASAFUMI;YAMADA, YUKINORI;KOYAMA, EIJI;FURUSHO, HITOSHI |
分类号 |
G11B7/26;G11B11/105;(IPC1-7):G11B5/66 |
主分类号 |
G11B7/26 |
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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