Invention Grant
- Patent Title: Perpendicular magnetic write head having a corner notched conformal, wrap-around, trailing magnetic shield for reduced adjacent track interference
- Patent Title (中): 垂直磁性写头,具有角切口的保形,环绕,后退磁屏蔽,减少相邻的轨道干扰
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Application No.: US11744054Application Date: 2007-05-03
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Publication No.: US07848054B2Publication Date: 2010-12-07
- Inventor: Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Aron Pentek , Yi Zheng
- Applicant: Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Aron Pentek , Yi Zheng
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Zilka-Kotab, PC
- Main IPC: G11B5/127
- IPC: G11B5/127

Abstract:
A perpendicular magnetic write head having a conformal wrap around trailing shield. The write head includes a write pole that can be configured with a trapezoidal shape as viewed from the Air Bearing Surface (ABS) and which includes a wrap around trailing magnetic shield. The magnetic shield has a trailing portion that is separated from the leading edge of the write pole by a non-magnetic trailing gap, and has side shield portions that are separated from first and second side portions of the write pole by first and second non-magnetic side gaps. The magnetic shield can be configured with notches at either side of the trailing portion of magnetic shield. These notches can extend in the trailing direction by a distance that is preferably ¼ to 1 times the trailing gap thickness. The width of the straight, trailing portion of the shield is preferable ½ to 1 times of the main pole width.
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