发明授权
- 专利标题: Thermally-assisted magnetic recording head and thermally-assisted magnetic recording method
- 专利标题(中): 热辅助磁记录头和热辅助磁记录方法
-
申请号: US12471786申请日: 2009-05-26
-
公开(公告)号: US08164986B2公开(公告)日: 2012-04-24
- 发明人: Susumu Aoki , Daisuke Miyauchi , Seiichi Takayama , Koji Shimazawa , Tetsuya Roppongi
- 申请人: Susumu Aoki , Daisuke Miyauchi , Seiichi Takayama , Koji Shimazawa , Tetsuya Roppongi
- 申请人地址: JP Tokyo
- 专利权人: TDK Corporation
- 当前专利权人: TDK Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Oliff & Berridge, PLC
- 主分类号: G11B11/00
- IPC分类号: G11B11/00
摘要:
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.
公开/授权文献
信息查询
IPC分类: