发明名称 |
Tapered PMR write pole with straight side wall portion |
摘要 |
A main pole layer with a tapered trailing side is disclosed that has three sections each with a write pole portion along the ABS and a yoke portion. A lower section has a bottom surface including a leading edge at the write pole tip and sidewalls with a bevel angle between 4 and 20 degrees. The middle section has essentially vertical sidewalls with a tapered side starting at the trailing edge and extending to a back side of the write pole and into the yoke. An upper section includes a portion of the tapered side and a top surface of the main pole layer and has a sidewall with a bevel angle from 0 to 45 degrees. The thickness of the middle section is greater than the pole height variation caused by variations in back end processes including ion milling and lapping to reduce erase width (EW) variations.
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申请公布号 |
US2011051293(A1) |
申请公布日期 |
2011.03.03 |
申请号 |
US20090583753 |
申请日期 |
2009.08.25 |
申请人 |
HEADWAY TECHNOLOGIES, INC. |
发明人 |
BAI ZHIGANG;WU YAN;DOVEK MORIS |
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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