Invention Grant
- Patent Title: Perpendicular magnetic recording head
- Patent Title (中): 垂直磁记录头
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Application No.: US13372775Application Date: 2012-02-14
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Publication No.: US08284517B1Publication Date: 2012-10-09
- Inventor: Hai Sun , Jinqiu Zhang , Hongping Yuan , Donghong Li , Liubo Hong , Yong Shen
- Applicant: Hai Sun , Jinqiu Zhang , Hongping Yuan , Donghong Li , Liubo Hong , Yong Shen
- Applicant Address: US CA Fremont
- Assignee: Western Digital (Fremont), LLC
- Current Assignee: Western Digital (Fremont), LLC
- Current Assignee Address: US CA Fremont
- Main IPC: G11B5/127
- IPC: G11B5/127

Abstract:
A perpendicular magnetic recording (PMR) head comprises a PMR pole having at least one side, a bottom, and a top wider than the bottom, a first portion of the at least one side being substantially vertical, a second portion of the at least one side being nonvertical, the top portion having a width not greater than one hundred fifty nanometers. The PMR head further comprises a nonmagnetic layer surrounding the bottom and the at least one side of the PMR pole, an intermediate layer substantially surrounding at least the second portion of the at least one side of the PMR pole, and a planarization stop layer adjacent to the first portion of the at least one side of the PMR pole.
Information query
IPC分类: