Invention Grant
- Patent Title: Composite thin-film magnetic head with non-magnetic conductive layer electrically connected with lower pole layer to increase counter electrode area
- Patent Title (中): 具有与下极层电连接的非磁性导电层的复合薄膜磁头增加对电极面积
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Application No.: US12427314Application Date: 2009-04-21
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Publication No.: US07672084B2Publication Date: 2010-03-02
- Inventor: Takeo Kagami , Noriaki Kasahara , Tetsuya Kuwashima
- Applicant: Takeo Kagami , Noriaki Kasahara , Tetsuya Kuwashima
- Applicant Address: JP Nihonbashi, Chuo-ku, Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Nihonbashi, Chuo-ku, Tokyo
- Agency: Frommer Lawrence & Haug LLP
- Priority: JP2005-034280 20050210
- Main IPC: G11B5/265
- IPC: G11B5/265 ; G11B5/31 ; G11B5/39

Abstract:
Composite thin-film magnetic head includes a substrate; a first insulation layer on the substrate; an MR read head element on the first insulation layer and provided with a lower shield layer, an upper shield layer and an MR layer with a sense current flowing perpendicular to a surface of the MR layer though the upper and lower shield layers; a second insulation layer on the MR read head element; an inductive write head element on the second insulation layer and provided with a lower magnetic pole layer, a recording gap layer, an upper magnetic pole layer with end portion opposed to an end portion of the lower magnetic pole layer through the recording gap layer and a write coil; and a nonmagnetic conductive layer electrically conducted with the lower shield layer and opposed to the substrate to increase the electrode area between the lower shield layer and the substrate.
Public/Granted literature
- US20090213501A1 Composite Thin-Film Magnetic Head, Magnetic Head Assembly And Magnetic Disk Drive Apparatus Public/Granted day:2009-08-27
Information query
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