Invention Grant
- Patent Title: Method for manufacturing a perpendicular magnetic write head having a leading edge tapered write pole, self aligned side shield and independent trailing shield
- Patent Title (中): 用于制造具有前缘锥形写极,自对准侧屏蔽和独立后屏蔽的垂直磁写头的方法
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Application No.: US12874116Application Date: 2010-09-01
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Publication No.: US08347489B2Publication Date: 2013-01-08
- Inventor: Liubo Hong , Aron Pentek , Yi Zheng , Honglin Zhu
- Applicant: Liubo Hong , Aron Pentek , Yi Zheng , Honglin Zhu
- 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 ; H04R31/00

Abstract:
A method for manufacturing a magnetic write head having a tapered write pole as well as a leading edge taper, and independent trailing and side magnetic shields. The method allows the write pole to be constructed by a dry process wherein the write pole material is either deposited by a process such as sputter deposition or electrically plated and the write pole shape is defined by masking and ion milling. The write pole has a stepped feature that can either be used to provide increased magnetic spacing between the trailing shield and the write pole at a location slightly recessed from the ABS or can be magnetic material that increases the effective thickness of the write pole at a location slightly recessed from the ABS. A bump structure can be further built over that stepped feature to enhance field gradient as well as reduce trailing shield saturation.
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