Invention Grant
- Patent Title: Perpendicular magnetic write head and magnetic recording device
- Patent Title (中): 垂直磁头和磁记录装置
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Application No.: US13727341Application Date: 2012-12-26
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Publication No.: US08817417B2Publication Date: 2014-08-26
- Inventor: Hideyuki Ukita , Kenta Hara , Kenkichi Anagawa , Yosuke Antoku , Masashi Sano , Shuji Okame , Masaya Kato
- Applicant: TDK Corporation
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Main IPC: G11B5/245
- IPC: G11B5/245 ; G11B5/39 ; G11B5/235

Abstract:
A trailing shield is provided on a trailing side of a magnetic pole with a non-magnetic gap layer in between, and an intermediate layer having negative uniaxial magnetocrystalline anisotropy is provided between the non-magnetic gap layer and the trailing shield. The intermediate layer has a magnetic property in which an easy axis of magnetization is provided in an in-plane direction and thus magnetization is likely to occur in that direction, whereas a difficult axis of magnetization is provided in a direction intersecting the in-plane direction and thus magnetization is less likely to occur in that direction. Accordingly, magnetic flux becomes difficult to excessively flow from the magnetic pole into the trailing shield.
Public/Granted literature
- US20140177104A1 PERPENDICULAR MAGNETIC WRITE HEAD AND MAGNETIC RECORDING DEVICE Public/Granted day:2014-06-26
Information query
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