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公开(公告)号：US10714137B1
公开(公告)日：2020-07-14
申请号：US16353237
申请日：2019-03-14
IPC分类号： G11B11/105 , G11B5/60 , G11B5/31 , G11B5/00 , G11B5/48
摘要： A recording head includes a waveguide core layer that delivers light from a light source to a region proximate a magnetic write pole. A near-field transducer that is formed of a thin metal film is deposited over the waveguide core layer. The near-field transducer includes an enlarged part with two straight edges facing a media-facing surface and at obtuse angles relative to the media-facing surface. A peg extends from the enlarged part towards the media-facing surface. The near-field transducer includes a metal aperture plate at the media-facing surface. The metal aperture plate surrounds at least three sides of the end of the peg.
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公开(公告)号：US11222657B1
公开(公告)日：2022-01-11
申请号：US17138508
申请日：2020-12-30
摘要： A recording head has a waveguide that delivers optical energy from an energy source and a write pole extending to a media-facing surface of the recording head. The recording head also has a near-field transducer coupled to receive the optical energy from the waveguide and emit surface plasmons from the media-facing surface towards a recording medium while the write pole applies a magnetic field to the recording medium. The near-field transducer has an extended portion that, as-manufactured, protrudes beyond the media-facing surface by a first distance.
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公开(公告)号：US10121496B1
公开(公告)日：2018-11-06
申请号：US15901991
申请日：2018-02-22
发明人： Chubing Peng , Tae-Woo Lee , Peng Zhang , Weibin Chen
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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公开(公告)号：US10186292B1
公开(公告)日：2019-01-22
申请号：US15966170
申请日：2018-04-30
摘要： A recording head has a waveguide core layer that delivers light from a light source to a region proximate a magnetic write pole. A near-field transducer is formed of a thin film of Rh or Ir deposited over the waveguide core layer. The near-field transducer includes an enlarged part with two straight edges facing a media-facing surface and at obtuse angles relative to the media-facing surface. A peg extends from the enlarged part towards the media-facing surface. The waveguide core layer has a terminating end with terminating edges that align with the two straight edges of the near-field transducer.
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