Invention Grant
- Patent Title: Perpendicular magnetic recording head having main magnetic pole layer formed on high-flatness surface of yoke layer, and method of manufacturing the head
- Patent Title (中): 具有形成在磁轭层的高平坦表面上的主磁极层的垂直磁记录头及其制造方法
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Application No.: US10025131Application Date: 2001-12-18
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Publication No.: US06687084B2Publication Date: 2004-02-03
- Inventor: Toru Takahashi , Hisayuki Yazawa , Hideki Gochou , Kiyoshi Kobayashi , Minoru Yamada , Kiyoshi Sato , Toshinori Watanabe
- Applicant: Toru Takahashi , Hisayuki Yazawa , Hideki Gochou , Kiyoshi Kobayashi , Minoru Yamada , Kiyoshi Sato , Toshinori Watanabe
- Priority: JP2000-394697 20001226
- Main IPC: G11B5127
- IPC: G11B5127

Abstract:
A main magnetic pole layer is formed on an insulating layer flattened into a high-flatness surface, and a yoke layer having a large film thickness is formed under the main magnetic pole layer independently of the main magnetic pole. The main magnetic pole layer has a front end surface formed in a shape with a width size gradually increasing in a direction of track width as the front end surface departs farther away from an auxiliary magnetic pole layer. A perpendicular magnetic recording head can be provided which can suppress the occurrence of fringing in a recording pattern, and can form the main magnetic pole layer with high pattern accuracy, and can satisfactorily introduce a recording magnetic field to a fore end of the main magnetic pole layer.
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