Invention Grant
- Patent Title: Perpendicular write head having a trailing shield with a short gap, short throat and high apex angle for improved linear density recording
- Patent Title (中): 垂直写头具有短间隙,短喉和高顶角的后挡板,用于改善线密度记录
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Application No.: US12109940Application Date: 2008-04-25
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Publication No.: US08553361B2Publication Date: 2013-10-08
- Inventor: Wen-Chien David Hsiao , Vladimir Nikitin
- Applicant: Wen-Chien David Hsiao , Vladimir Nikitin
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Zilka-Kotab, PC
- Main IPC: G11B5/17
- IPC: G11B5/17

Abstract:
A magnetic write head having a trailing shield configured to optimize both write field strength and field gradient. The write head includes a write pole, a trailing gap layer formed over the trailing edge of the write pole and a trailing magnetic shield formed over the non-magnetic write gap layer such that the non-magnetic write gap layer is sandwiched between the trailing magnetic shield and the write pole. The trailing magnetic shield has a first surface disposed at the air bearing surface and second surface disposed away from the air bearing surface that is tapered at an angle of 20 to 75 degrees relative to the trailing edge of the write pole.
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