Invention Grant
- Patent Title: Magnetic head for perpendicular magnetic recording having a pole layer including a plurality of stacked magnetic films
- Patent Title (中): 用于垂直磁记录的磁头,其具有包括多个堆叠的磁性膜的极层
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Application No.: US13440554Application Date: 2012-04-05
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Publication No.: US08687320B2Publication Date: 2014-04-01
- Inventor: Yoshitaka Sasaki , Hiroyuki Itoh , Shigeki Tanemura , Hironori Araki , Kazuo Ishizaki , Takehiro Horinaka
- Applicant: Yoshitaka Sasaki , Hiroyuki Itoh , Shigeki Tanemura , Hironori Araki , Kazuo Ishizaki , Takehiro Horinaka
- Applicant Address: US CA Milpitas
- Assignee: Headway Technologies, Inc.
- Current Assignee: Headway Technologies, Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Oliff PLC
- Main IPC: G11B5/127
- IPC: G11B5/127

Abstract:
A magnetic head includes a pole layer accommodated in a groove. The pole layer has a track width defining portion and a wide portion. The pole layer includes a plurality of magnetic films stacked. At least one of the plurality of magnetic films includes a first portion included in the track width defining portion, a second portion included in the wide portion, and a third portion coupling the first and second portions to each other. In a cross section passing through the center of the pole layer taken in the track width direction, the second portion is smaller than the first portion in thickness and the top surface of the third portion is inclined with respect to a direction perpendicular to a medium facing surface.
Public/Granted literature
Information query
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