发明名称 |
Composite shield structure of PMR writer for high track density |
摘要 |
Improved writability and a substantial reduction in adjacent track erasure are achieved by incorporating a composite shield structure in a PMR writer. There is a trailing shield formed a certain distance above the top surface of a write pole, a leading shield formed a certain distance below the bottom surface of the write pole, and a partial side shield having a side shield section formed on each side of the write pole. The partial side shield thickness is less than that of the write pole. Each partial side shield section has a side that is parallel to the nearest write pole side and a top surface that is offset from the write pole top surface by 0 to 0.15 microns. A plurality of magnetic connections between two or more shield elements is employed to ensure correct magnetic potential. The large write pole has a flare angle of 45 to 75 degrees.
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申请公布号 |
US8023231(B2) |
申请公布日期 |
2011.09.20 |
申请号 |
US20100807173 |
申请日期 |
2010.08.30 |
申请人 |
HEADWAY TECHNOLOGIES, INC. |
发明人 |
GUAN LIJIE;DOVEK MORIS;SMYTH JOE;SASAKI YOSHITAKA |
分类号 |
G11B5/127 |
主分类号 |
G11B5/127 |
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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