公开(公告)号：US20190206433A1

公开(公告)日：2019-07-04

申请号：US15857847

申请日：2017-12-29

Applicant: Headway Technologies, Inc.

Inventor： Matteo Staffaroni ,  Koji Shimazawa ,  Tobias Maletzky ,  Xuhui Jin ,  Yoshihiro Tsuchiya ,  Tsutomu Chou

IPC: G11B5/60 ,  G11B5/48 ,  G11B5/31

CPC classification number: G11B5/6082 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/4866 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A TAMR (thermally assisted magnetic recording) write head uses a gap-based NFT (near-field transducer) to create plasmon near field energy. In one embodiment the NFT is a double ridge aperture structure that simultaneously delivers low transition curvature and better cross-track thermal gradients than previous designs. In another embodiment a NFT comprises a top and bottom ridge not confined to an aperture structure, made of thermo-mechanically stable materials and a parabolic shaped metal layer disposed adjacent to a dielectric waveguide core to couple optical energy to surface plasmon modes.

公开(公告)号：US10332553B1

公开(公告)日：2019-06-25

申请号：US15857847

申请日：2017-12-29

Applicant: Headway Technologies, Inc.

Inventor： Matteo Staffaroni ,  Koji Shimazawa ,  Tobias Maletzky ,  Xuhui Jin ,  Yoshihiro Tsuchiya ,  Tsutomu Chou

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

CPC classification number: G11B5/6082 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/4866 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A TAMR (thermally assisted magnetic recording) write head uses a gap-based NFT (near-field transducer) to create plasmon near field energy. In one embodiment the NFT is a double ridge aperture structure that simultaneously delivers low transition curvature and better cross-track thermal gradients than previous designs. In another embodiment a NFT comprises a top and bottom ridge not confined to an aperture structure, made of thermo-mechanically stable materials and a parabolic shaped metal layer disposed adjacent to a dielectric waveguide core to couple optical energy to surface plasmon modes.

公开(公告)号：US09852752B1

公开(公告)日：2017-12-26

申请号：US15235171

申请日：2016-08-12

Applicant: Headway Technologies, Inc.

Inventor： Tsutomu Chou ,  Kouji Shimazawa ,  Tobias Maletzky ,  Weihao Xu ,  Shinji Hara ,  Yoshihiro Tsuchiya ,  Yiming Wang ,  Cherng-Chyi Han ,  Xuhui Jin

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

CPC classification number: G11B5/4866 ,  G11B5/1278 ,  G11B5/3106 ,  G11B5/3136 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6082 ,  G11B5/6088 ,  G11B11/10506 ,  G11B11/1051 ,  G11B2005/0021

Abstract: A TAMR (thermal assisted magnetic recording) write head has a metal blocker formed against a distal end of a waveguide. The waveguide focuses optical radiation on an adjacent plasmon generator where it excites plasmon modes that heat the recording medium. Although the plasmon generator typically heats the recording medium using the plasmon near field to supply the required Joule heating, an unblocked waveguide would also send optical radiation to the medium and surrounding structures producing unwanted heating and device unreliability. The role of the blocker is to block the unwanted optical radiation and, thereby, to limit the heating to that supplied by the plasmon near field.

公开(公告)号：US10152991B2

公开(公告)日：2018-12-11

申请号：US15837205

申请日：2017-12-11

Applicant: Headway Technologies, Inc.

Inventor： Tsutomu Chou ,  Kouji Shimazawa ,  Tobias Maletzky ,  Weihao Xu ,  Shinji Hara ,  Yoshihiro Tsuchiya ,  Yiming Wang ,  Cherng-Chyi Han ,  Xuhui Jin

IPC: G11B11/00 ,  G11B5/48 ,  G11B5/31 ,  G11B5/60 ,  G11B5/127 ,  G11B5/00 ,  G11B11/105

Abstract: A method for manufacturing a TAMR (thermal assisted magnetic recording) write head. The write head has a metal blocker formed against a distal end of a waveguide. The waveguide focuses optical radiation on an adjacent plasmon generator where it excites plasmon modes that heat the recording medium. Although the plasmon generator typically heats the recording medium using the plasmon near field to supply the required Joule heating, an unblocked waveguide would also send optical radiation to the medium and surrounding structures producing unwanted heating and device unreliability. The role of the blocker is to block the unwanted optical radiation and, thereby, to limit the heating to that supplied by the plasmon near field.

公开(公告)号：US20180182419A1

公开(公告)日：2018-06-28

申请号：US15837205

申请日：2017-12-11

Applicant: Headway Technologies, Inc.

Inventor： Tsutomu Chou ,  Kouji Shimazawa ,  Tobias Maletzky ,  Weihao Xu ,  Shinji Hara ,  Yoshihiro Tsuchiya ,  Yiming Wang ,  Cherng-Chyi Han ,  Xuhui Jin

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

CPC classification number: G11B5/4866 ,  G11B5/1278 ,  G11B5/3106 ,  G11B5/3136 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6082 ,  G11B5/6088 ,  G11B11/10506 ,  G11B11/1051 ,  G11B2005/0021

Abstract: A TAMR (thermal assisted magnetic recording) write head and a method of its fabrication. The write head has a metal blocker formed against a distal end of a waveguide. The waveguide focuses optical radiation on an adjacent plasmon generator where it excites plasmon modes that heat the recording medium. Although the plasmon generator typically heats the recording medium using the plasmon near field to supply the required Joule heating, an unblocked waveguide would also send optical radiation to the medium and surrounding structures producing unwanted heating and device unreliability. The role of the blocker is to block the unwanted optical radiation and, thereby, to limit the heating to that supplied by the plasmon near field.