Invention Grant
- Patent Title: Thermally-assisted magnetic recording head and thermally-assisted magnetic recording method
- Patent Title (中): 热辅助磁记录头和热辅助磁记录方法
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Application No.: US12471786Application Date: 2009-05-26
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Publication No.: US08164986B2Publication Date: 2012-04-24
- Inventor: Susumu Aoki , Daisuke Miyauchi , Seiichi Takayama , Koji Shimazawa , Tetsuya Roppongi
- Applicant: Susumu Aoki , Daisuke Miyauchi , Seiichi Takayama , Koji Shimazawa , Tetsuya Roppongi
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Main IPC: G11B11/00
- IPC: G11B11/00

Abstract:
A magnetic recording head capable of a satisfying thermally-assisted magnetic recording without depending on the use of a near-field light generator is provided. The head comprises a waveguide and a main magnetic pole having a main pole tip. Further, at least a portion of the main pole tip is embedded in a groove provided in the upper surface of the waveguide. Further, a second clad layer is provided on the first clad layer and on a rear side from the main pole tip. This configuration of the first and second clad layers suppresses the absorption of the light propagating through the waveguide by the main magnetic pole. Further, the configuration in which at least a portion of the main pole tip is embedded in the groove can cause the distance between the light spot center of the waveguide and the main magnetic pole to be sufficiently small.
Public/Granted literature
- US20100302672A1 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD AND THERMALLY-ASSISTED MAGNETIC RECORDING METHOD Public/Granted day:2010-12-02
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