发明授权
- 专利标题： Heat-assisted magnetic recording head including plasmon generator
- 专利标题（中）： 热辅助磁记录头包括等离子体发生器
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申请号： US12728600申请日： 2010-03-22
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公开(公告)号： US08125857B2公开(公告)日： 2012-02-28
- 发明人: Kosuke Tanaka , Daisuke Miyauchi , Susumu Aoki , Tetsuya Roppongi , Tsutomu Chou , Shinji Hara , Eiji Komura
- 申请人： Kosuke Tanaka , Daisuke Miyauchi , Susumu Aoki , Tetsuya Roppongi , Tsutomu Chou , Shinji Hara , Eiji Komura
- 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 plasmon generator has an outer surface including a propagation edge, and has a near-field light generating part lying at an end of the propagation edge and located in a medium facing surface. The propagation edge faces an evanescent light generating surface of a waveguide's core with a predetermined distance therebetween and extends in a direction perpendicular to the medium facing surface. The propagation edge is arc-shaped in a cross section parallel to the medium facing surface. The plasmon generator includes a shape changing portion in which a radius of curvature of the propagation edge in the cross section parallel to the medium facing surface continuously decreases with decreasing distance to the medium facing surface.