发明名称 |
Magnetic recording head having a first pole for generating an easy axis field and an auxiliary pole for generating a first auxiliary hard axis field that opposes an initial hard axis field |
摘要 |
A magnetic recording head includes a first pole having multiple magnetic layers separated by multiple gap layers. The multiple magnetic layers make up a write pole which produces a first hard axis field and a first auxiliary pole that produces a first auxiliary field that opposes the first hard axis field resulting in a reduced net hard axis field. The write pole and the first auxiliary pole are separated by a first gap layer made of a material that is less magnetically conducting than the write pole and the first auxiliary pole. The write pole is located upstream from the first auxiliary pole relative to a perpendicular magnetic recording medium. A portion of the first auxiliary pole exists in a region between a surface of the perpendicular magnetic recording medium and five microns from a surface of the perpendicular magnetic recording medium.
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申请公布号 |
US6965494(B2) |
申请公布日期 |
2005.11.15 |
申请号 |
US20030436545 |
申请日期 |
2003.05.12 |
申请人 |
CAMPBELL ROBERT OWEN;SESHAN CHITRA |
发明人 |
CAMPBELL ROBERT OWEN;SESHAN CHITRA |
分类号 |
G11B5/00;G11B5/127;(IPC1-7):G11B5/147 |
主分类号 |
G11B5/00 |
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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