Invention Grant
- Patent Title: Perpendicular magnetic recording head having return path layer and gap adjusting layer
- Patent Title (中): 具有返回路径层和间隙调整层的垂直磁记录头
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Application No.: US11460922Application Date: 2006-07-28
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Publication No.: US07692896B2Publication Date: 2010-04-06
- Inventor: Hiroshi Kameda , Hisayuki Yazawa
- Applicant: Hiroshi Kameda , Hisayuki Yazawa
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Brinks Hofer Gilson & Lione
- Priority: JP2005-238912 20050819
- Main IPC: G11B5/147
- IPC: G11B5/147

Abstract:
A perpendicular magnetic recording head includes a main pole layer and a return path layer that are exposed from a medium-facing surface of the recording head facing a recording medium and that face each other with a predetermined gap therebetween at the medium-facing surface. A coil layer applies a recording magnetic field to the main pole layer and the return path layer. The return path layer includes a gap adjusting layer and a main layer stacked in that order from a side facing the main pole layer. The gap adjusting layer is positioned so as to face the main pole layer and the recording medium, and is made of a magnetic material having a resistivity lower than resistivities of the main layer and the main pole layer.
Public/Granted literature
- US20070041127A1 PERPENDICULAR MAGNETIC RECORDING HEAD HAVING RETURN PATH LAYER AND GAP ADJUSTING LAYER Public/Granted day:2007-02-22
Information query
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