- 专利标题: Heat-assisted magnetic recording head having peg coupler and plasmonic pad
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申请号: US15901991申请日: 2018-02-22
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公开(公告)号: US10121496B1公开(公告)日: 2018-11-06
- 发明人: Chubing Peng , Tae-Woo Lee , Peng Zhang , Weibin Chen
- 申请人: Seagate Technology LLC
- 申请人地址: US CA Cupertino
- 专利权人: Seagate Technology LLC
- 当前专利权人: Seagate Technology LLC
- 当前专利权人地址: US CA Cupertino
- 代理机构: Hollingsworth Davis, LLC
- 主分类号: G11B11/00
- IPC分类号: G11B11/00 ; G11B5/31 ; G11B5/48 ; G11B5/00 ; G11B11/105 ; G11B7/1387
摘要:
A write head includes a waveguide, a magnetic pole, and a near-field transducer. The near-field transducer includes an enlarged portion and a peg. The peg is separated from the magnetic pole in a downtrack direction by a dielectric gap. A peg coupler covers a bottom surface of the magnetic pole and is separated from the peg. The peg coupler is formed of a first plasmonic material. A pad extends from the peg coupler into part of the gap in the downtrack direction towards the peg. The pad is formed of a second plasmonic material and extends into the write head away from the media-facing surface a distance L that is less than a corresponding distance of the peg coupler.
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