发明名称 |
Magnetic recording medium |
摘要 |
A distribution of grain boundaries in a magnetic recording medium having a granular structure is reduced so that the magnetic recording medium with a high medium signal-to-noise ratio is provided. According to one embodiment, in an underlayer composed of grains each having a generally columnar structure and in a magnetic recording layer composed of magnetic crystal grains each having a generally columnar structure and grain boundaries, a grain size Dm of the magnetic recording layer and a grain size Du of each of the underlayer crystal grains are determined to satisfy a relationship represented by 0.8xDu<=Dm<Du and a standardized grain boundary distribution obtained by dividing the standardized deviation of the distribution of the grain boundaries by an average grain boundary width is adjusted to about 0.4 or less.
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申请公布号 |
US2005142387(A1) |
申请公布日期 |
2005.06.30 |
申请号 |
US20040976649 |
申请日期 |
2004.10.29 |
申请人 |
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发明人 |
ARAKI RYOKO;TAKAHASHI YOSHIO |
分类号 |
G11B5/66;G11B5/64;G11B5/667;G11B5/714;G11B5/72;G11B5/738;G11B5/855;(IPC1-7):G11B5/667;G11B5/68 |
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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