Invention Grant
- Patent Title: Writer shields with modified shapes for reduced flux shunting
- Patent Title (中): 作者盾牌具有改进的形状,用于减少通量分流
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Application No.: US12806803Application Date: 2010-08-20
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Publication No.: US08542461B2Publication Date: 2013-09-24
- Inventor: Zhigang Bai , Moris Dovek , Yan Wu
- Applicant: Zhigang Bai , Moris Dovek , Yan Wu
- Applicant Address: US CA Milpitas
- Assignee: Headway Technologies, Inc.
- Current Assignee: Headway Technologies, Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Saile Ackerman LLC
- Agent Stephen B. Ackerman
- Main IPC: G11B5/147
- IPC: G11B5/147 ; G11B5/187

Abstract:
A perpendicular magnetic recording (PMR) head is fabricated with a configuration of leading edge shields and trailing edge shields that reduce the leakage of flux between the main pole and the shields. The reduction of leakage is achieved by eliminating the sharp 90° corner between the backside surfaces of the shields and the surfaces adjacent to the main pole. In one embodiment the corner is replaced by two successive acute angles, in another embodiment it is replaced by a rounded surface. In a final embodiment, leakage between the pole and trailing edge shield is achieved by shortening the length of the write gap by forming the shield with a double taper.
Public/Granted literature
- US20120044598A1 Writer shields with modified shapes for reduced flux shunting Public/Granted day:2012-02-23
Information query
IPC分类: