Invention Grant
- Patent Title: Perpendicular recording magnetic head
- Patent Title (中): 垂直记录磁头
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Application No.: US12079223Application Date: 2008-03-24
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Publication No.: US08054580B2Publication Date: 2011-11-08
- Inventor: Wataru Kimura , Tadayuki Iwakura , Yohji Marujama
- Applicant: Wataru Kimura , Tadayuki Iwakura , Yohji Marujama
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Gloabl Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Gloabl Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Zilka-Kotab, PC
- Priority: JP2007-074658 20070322
- Main IPC: G11B5/31
- IPC: G11B5/31

Abstract:
Embodiments of the present invention provide a perpendicular recording magnetic head having a narrow track width, high recording magnetic field intensity, and a good recording magnetic field distribution. According to one embodiment, a perpendicular recording magnetic head includes a read section and a write section. The write section includes a main magnetic pole layer, a lower sub magnetic pole layer, an upper sub magnetic pole layer, a pedestal magnetic layer, and a coil conductor generating a magnetic flux in the main magnetic pole layer. The write section further includes lower and upper auxiliary magnetic pole layers disposed on a leading side and a trailing side, respectively, relative to a medium moving direction, adjacent to the main magnetic pole layer. The lower and upper auxiliary magnetic pole layers are retracted from an air bearing surface. The upper auxiliary magnetic pole layer is retracted from the air bearing surface less than the lower auxiliary magnetic pole layer.
Public/Granted literature
- US20080231994A1 Perpendicular recording magnetic head Public/Granted day:2008-09-25
Information query
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