公开(公告)号：US11107497B1

公开(公告)日：2021-08-31

申请号：US16724558

申请日：2019-12-23

Applicant: Seagate Technology LLC

Inventor： Ruoxi Yang ,  YongJun Zhao ,  Nan Zhou ,  Weibin Chen ,  Huaqing Yin ,  Michael Allen Seigler

IPC: G11B7/1362 ,  G11B5/60 ,  G11B13/08 ,  G11B5/31 ,  G11B7/1387 ,  G11B11/105 ,  G11B5/00

Abstract: A recording head includes a near-field transducer proximate a media-facing surface of the recording head and a waveguide that overlaps and delivers light to the near-field transducer. The recording head includes subwavelength-sized focusing mirror comprising first and second reflectors disposed on cross track sides of the near-field transducer. Each of the first and second reflectors is spaced apart from the media-facing surface by a distance, D, measured along an axis normal to the media-facing surface.

公开(公告)号：US12249356B1

公开(公告)日：2025-03-11

申请号：US18529302

申请日：2023-12-05

Applicant: Seagate Technology LLC

Inventor： Tae-Woo Lee ,  YongJun Zhao

IPC: G11B5/31 ,  G11B5/00

Abstract: A heat-assisted magnetic recording head includes a near-field transducer, a waveguide, and a resonance enhancing feature. The near-field transducer is configured to focus and emit an optical near-field. The waveguide is configured to receive electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer. The resonance enhancing feature is disposed proximal to the near-field transducer and to a media-facing surface of the heat-assisted magnetic recording head. The resonance enhancing feature includes a first segment and a second segment disposed on opposite sides of the near-field transducer relative to a cross-track dimension of the heat-assisted magnetic recording head. Each of the first segment and the second segment of the resonance enhancing feature includes a liner and a filler. The liner of each of the first segment and the second segment at least partially faces the near-field transducer. The filler of each of the first segment and the second segment is disposed distal to the near-field transducer relative to the liner of the respective segment.

公开(公告)号：US11373679B1

公开(公告)日：2022-06-28

申请号：US17406352

申请日：2021-08-19

Applicant: Seagate Technology LLC

Inventor： Ruoxi Yang ,  YongJun Zhao ,  Nan Zhou ,  Weibin Chen ,  Huaqing Yin ,  Michael Allen Seigler

IPC: G11B7/1387 ,  G11B5/60 ,  G11B5/31 ,  G11B13/08 ,  G11B7/1362 ,  G11B11/105 ,  G11B5/00

Abstract: A recording head includes a near-field transducer proximate a media-facing surface of the recording head and a waveguide that overlaps and delivers light to the near-field transducer. The recording head includes subwavelength-sized focusing mirror comprising first and second reflectors disposed on cross track sides of the near-field transducer. Each of the first and second reflectors is spaced apart from the media-facing surface by a distance, D, measured along an axis normal to the media-facing surface.

公开(公告)号：US20160133275A1

公开(公告)日：2016-05-12

申请号：US14938264

申请日：2015-11-11

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Sridhar Dubbaka ,  YongJun Zhao ,  David Michael Grundman

IPC: G11B5/127

CPC classification number: G11B5/314 ,  G11B2005/0021

Abstract: A method of forming a peg of a NFT, the peg having a tapered portion, the method including depositing a layer of dielectric material; forming a three dimensional shape from at least a portion of the dielectric material the three dimensional shape having two side surfaces and two end surfaces; and depositing plasmonic material on at least one side surface of the three dimensional shape of dielectric material, wherein the plasmonic material deposited on the at least one side surface forms the tapered portion of the peg.

Abstract translation: 一种形成NFT的钉的方法，所述钉具有锥形部分，所述方法包括沉积介电材料层; 从电介质材料的至少一部分形成具有两个侧面和两个端面的三维形状的三维形状; 以及将等离子体激元材料沉积在介电材料的三维形状的至少一个侧表面上，其中沉积在所述至少一个侧表面上的等离子体激元材料形成所述钉的锥形部分。

公开(公告)号：US11664051B1

公开(公告)日：2023-05-30

申请号：US17706257

申请日：2022-03-28

Applicant: Seagate Technology LLC

Inventor： Nan Zhou ,  Michael Allen Seigler ,  YongJun Zhao ,  Huaqing Yin ,  Michael C. Kautzky ,  Li Wan

IPC: G11B5/31 ,  G11B13/08 ,  G11B5/00

CPC classification number: G11B13/08 ,  G11B2005/0021

Abstract: A recording head has a near-field transducer proximate a media-facing surface of the recording head. A waveguide overlaps and delivers light to the near-field transducer. Two subwavelength focusing mirrors are at an end of the waveguide proximate the media-facing surface. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a core having a first edge exposed at the media-facing surface. The core formed of a core material that is resistant to mechanical wear and corrosion, such as a dielectric or robust metal. A liner covers a second edge of the core facing the near-field transducer. The liner includes a plasmonic metal that is different than the core material, such as Au or Al.

公开(公告)号：US10186283B2

公开(公告)日：2019-01-22

申请号：US14938264

申请日：2015-11-11

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Sridhar Dubbaka ,  YongJun Zhao ,  David Michael Grundman

IPC: H01L21/311 ,  G11B5/31 ,  G11B5/00

Abstract: A method of forming a peg of a NFT, the peg having a tapered portion, the method including depositing a layer of dielectric material; forming a three dimensional shape from at least a portion of the dielectric material the three dimensional shape having two side surfaces and two end surfaces; and depositing plasmonic material on at least one side surface of the three dimensional shape of dielectric material, wherein the plasmonic material deposited on the at least one side surface forms the tapered portion of the peg.