发明授权
- 专利标题： Heat-assisted magnetic write head, head gimbals assembly, head arm assembly, and magnetic disk device
- 专利标题（中）： 热辅助写磁头，头架万向节组件，头臂组件和磁盘设备
-
申请号： US13045992申请日： 2011-03-11
-
公开(公告)号： US08374059B2公开(公告)日： 2013-02-12
- 发明人: Takahiko Izawa , Tsutomu Chuo , Eiji Komura , Kosuke Tanaka
- 申请人： Takahiko Izawa , Tsutomu Chuo , Eiji Komura , Kosuke Tanaka
- 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 heat-assisted magnetic write head includes a magnetic pole having an end surface exposed at an air bearing surface, a waveguide extending toward the air bearing surface to propagate light, a first pair of clads made of a first dielectric material having a refractive index lower than that of the waveguide, and sandwiching the waveguide in a track width direction, and a second pair of clads made of a second dielectric material having a refractive index lower than that of the first dielectric material, and sandwiching the waveguide in a thickness direction orthogonal to the track width direction. Further, the heat-assisted magnetic write head may include, between the magnetic pole and the waveguide, a plasmon generator generating near-field light from the air bearing surface, based on light propagating through the waveguide.