公开(公告)号：US20220220795A1

公开(公告)日：2022-07-14

申请号：US17583550

申请日：2022-01-25

Applicant: Seagate Technology LLC

Inventor： Weibin Chen ,  Nan Zhou ,  Ruoxi Yang ,  Michael Allen Siegler

IPC: E06B1/62 ,  C08L95/00 ,  E04B1/66

Abstract: A recording head has a near-field transducer that extends a first distance away from a media-facing surface. Two subwavelength focusing mirrors are at an end of a waveguide proximate the media-facing surface and extend a second distance away from the media-facing surface that is less than the first distance. 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 first material at the media-facing surface and a plasmonic material that covers an edge of the subwavelength focusing mirror that faces the near-field transducer. The first material is more mechanically robust than the plasmonic material.

公开(公告)号：US11646058B1

公开(公告)日：2023-05-09

申请号：US17657167

申请日：2022-03-30

Applicant: Seagate Technology LLC

Inventor： Martin Giles Blaber ,  Michael Allen Siegler ,  James G Wessel ,  YuHang Cheng ,  Scott M Franzen

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

CPC classification number: G11B13/08 ,  G11B5/3106 ,  G11B2005/0021

Abstract: A heat-assisted magnetic recording head includes a near-field transducer, a heat sink, a diffuser, and a diffusion barrier. The near-field transducer is configured to produce a hot spot on a proximate magnetic disk. The heat sink is configured to draw heat away from the near-field transducer. The heat sink is disposed in a down-track direction relative to and coupled to the near-field transducer. The diffuser is configured to draw heat away from the heat sink. The diffuser is disposed in a down-track direction relative to the heat sink. The diffusion barrier includes a metal. The diffusion barrier is disposed between and coupled to the heat sink and the diffuser.

公开(公告)号：US11661788B2

公开(公告)日：2023-05-30

申请号：US17583550

申请日：2022-01-25

Applicant: Seagate Technology LLC

Inventor： Weibin Chen ,  Nan Zhou ,  Ruoxi Yang ,  Michael Allen Siegler

IPC: G11B5/00 ,  G11B11/105 ,  E06B1/62 ,  C08L95/00 ,  E04B1/66 ,  E04F19/04

CPC classification number: E06B1/62 ,  C08L95/005 ,  E04B1/665 ,  E04F19/045 ,  E04F19/0459 ,  E06B2001/628

Abstract: A recording head has a near-field transducer that extends a first distance away from a media-facing surface. Two subwavelength focusing mirrors are at an end of a waveguide proximate the media-facing surface and extend a second distance away from the media-facing surface that is less than the first distance. 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 first material at the media-facing surface and a plasmonic material that covers an edge of the subwavelength focusing mirror that faces the near-field transducer. The first material is more mechanically robust than the plasmonic material.

公开(公告)号：US20140376348A1

公开(公告)日：2014-12-25

申请号：US14313540

申请日：2014-06-24

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Yuhang Cheng ,  Tong Zhao ,  Michael C. Kautzky ,  Ed F. Rejda ,  Kurt W. Wierman ,  Scott Franzen ,  Michael Allen Siegler

IPC: G11B13/08 ,  G11B5/48

CPC classification number: G11B5/314 ,  G11B5/3106 ,  G11B5/4866 ,  G11B5/6088 ,  G11B13/08 ,  G11B2005/0021

Abstract: Devices that include a near field transducer (NFT), the NFT including a peg having five exposed surfaces, the peg including a first material; an overlying structure; at least one intermixing layer, positioned between the peg and the overlying structure, the at least one intermixing layer positioned on at least one of the five surfaces of the peg, the intermixing layer including at least the first material and a second material.

Abstract translation: 包括近场换能器（NFT）的装置，所述NFT包括具有五个暴露表面的钉，所述钉包括第一材料; 上层结构; 至少一个混合层，位于所述钉和所述上覆结构之间，所述至少一个混合层定位在所述栓钉的五个表面中的至少一个上，所述混合层至少包括所述第一材料和第二材料。