发明名称 |
Perpendicular magnetic recording write head with trailing shield having notch and throat height defined by nonmagnetic pad layer |
摘要 |
A perpendicular magnetic recording write head supported on an air-bearing slider has a magnetic write pole (WP) with a WP end at the air-bearing surface (ABS) having a width generally equal to the data track width and a trailing shield (TS) with a TS end generally coplanar with the WP end. The TS has a first portion with a width at the TS end substantially wider than the width of the WP end and a TS notch (TSN) portion with a width at the TS end generally equal to the width of the WP end. The TS first portion has a height in a direction perpendicular to the ABS, and the TSN portion has a throat height (TH) in a direction perpendicular to the ABS that is less than the height of the TS first portion. A nonmagnetic gap layer separates the WP from the TSN portion and a nonmagnetic pad layer separates the WP from the TS first portion. The pad layer has a front edge generally parallel to and recessed from the ABS that defines the TH of the TSN portion, and a thickness that defines the length of the TSN portion in the along-the-track direction.
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申请公布号 |
US7768743(B2) |
申请公布日期 |
2010.08.03 |
申请号 |
US20070747656 |
申请日期 |
2007.05.11 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. |
发明人 |
GUTHRIE HUNG-CHIN;JIANG MING;SHI CHANGQING |
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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