公开(公告)号：US12190922B1

公开(公告)日：2025-01-07

申请号：US17543993

申请日：2021-12-07

Applicant: Seagate Technology LLC

Inventor： Michael A. Seigler ,  Peng Zhang ,  David James Ellison ,  James D. Kiely ,  Edwin F. Rejda

IPC: G11B5/48 ,  G11B5/00 ,  G11B5/31 ,  G11B5/41 ,  G11B5/60

Abstract: A method involves forming a recording head that comprises a waveguide, a write pole, and a near-field transducer proximate the write pole. The near-field transducer has an extended portion extending towards a surface of the recording head and operable to direct plasmons to a recording medium. The surface of the recording head is lapped to form a lapped surface. A resist or hardmask is patterned on the lapped surface in a region that encompasses the extended portion. The lapped surface is etched with the resist or hardmask pattern to form a media-facing surface such that the extended portion protrudes beyond the media-facing surface by a first distance, and the resist or hardmask is removed.

公开(公告)号：US10714137B1

公开(公告)日：2020-07-14

申请号：US16353237

申请日：2019-03-14

Applicant: Seagate Technology LLC

Inventor： Vivek Krishnamurthy ,  TaeWoo Lee ,  Michael Allen Seigler ,  Peng Zhang ,  Martin Giles Blaber

IPC: G11B11/105 ,  G11B5/60 ,  G11B5/31 ,  G11B5/00 ,  G11B5/48

Abstract: 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.

公开(公告)号：US11222657B1

公开(公告)日：2022-01-11

申请号：US17138508

申请日：2020-12-30

Applicant: Seagate Technology LLC

Inventor： Michael A. Seigler ,  Peng Zhang ,  David James Ellison ,  James D. Kiely ,  Edwin F. Rejda

IPC: G11B11/105 ,  G11B5/48 ,  G11B5/60 ,  G11B5/31 ,  G11B5/41 ,  G11B5/00

Abstract: 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.

公开(公告)号：US10121496B1

公开(公告)日：2018-11-06

申请号：US15901991

申请日：2018-02-22

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Tae-Woo Lee ,  Peng Zhang ,  Weibin Chen

IPC: G11B11/00 ,  G11B5/31 ,  G11B5/48 ,  G11B5/00 ,  G11B11/105 ,  G11B7/1387

Abstract: 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.

公开(公告)号：US10186292B1

公开(公告)日：2019-01-22

申请号：US15966170

申请日：2018-04-30

Applicant: Seagate Technology LLC

Inventor： Vivek Krishnamurthy ,  Tae-Woo Lee ,  Michael Allen Seigler ,  Peng Zhang

IPC: G11B7/00 ,  G11B5/60 ,  G11B5/31 ,  G11B5/48 ,  G11B5/00

Abstract: 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.