| 发明名称 |
Magnetic recording medium possessing a fluctuation field of not less than 30 Oe |
| 摘要 |
An ferromagnetic thin film is used to provide a magnetic recording medium whose noise is low and whose S/N value is high. The ferromagnetic thin film as the magnetic film of the magnetic recording medium is such that the fluctuation field of magnetic viscosity at 25° C. at the field strength equal to remanence coercivity or coercivity is not less than 15 oersteds and the coercivity is not less than 2000 oersteds.
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| 申请公布号 |
US6846577(B2) |
申请公布日期 |
2005.01.25 |
| 申请号 |
US20030386456 |
申请日期 |
2003.03.13 |
| 申请人 |
HITACHI, LTD. |
发明人 |
YAMANAKA KAZUSUKE;YAMAMOTO TOMOO;HOSOE YUZURU;INABA NOBUYUKI;UESAKA YASUTARO;FUTAMOTO MASAAKI;MATSUDA YOSHIBUMI;FURUSAWA KENJI;NARISHIGE SHINJI |
| 分类号 |
G11B5/66;G11B5/02;G11B5/64;G11B5/65;G11B5/73;(IPC1-7):G11B5/66 |
主分类号 |
G11B5/66 |
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