公开(公告)号：US09980395B2

公开(公告)日：2018-05-22

申请号：US14492244

申请日：2014-09-22

Applicant: TDK Corporation ,  ROHM CO., LTD. ,  SAE Magnetics (H.K.) Ltd.

Inventor： Koji Shimazawa ,  Osamu Shindo ,  Yoshihiro Tsuchiya ,  Yasuhiro Ito ,  Kenji Sakai

IPC: B23K26/00 ,  H01S5/00 ,  H05K3/34 ,  B23K1/00 ,  H01S5/022

CPC classification number: H05K3/3421 ,  B23K1/0016 ,  H01S5/02236 ,  H01S5/02272 ,  Y10T29/49144

Abstract: A manufacturing method of laser diode unit of the present invention includes steps: placing a laser diode on top of a solder member formed on a mounting surface of a submount, applying a pressing load to the laser diode and pressing the laser diode against the solder member, next, melting the solder member by heating the solder member at a temperature higher than a melting point of the solder member while the pressing load is being applied, and thereafter, bonding the laser diode to the submount by cooling and solidifying the solder member, thereafter, removing the pressing load, and softening the solidified solder member by heating the solder member at a temperature lower than the melting point of the solder member after the pressing load has been removed, and thereafter cooling and re-solidifying the solder member.

公开(公告)号：US10043542B2

公开(公告)日：2018-08-07

申请号：US15080964

申请日：2016-03-25

Applicant: TDK Corporation

Inventor： Koji Shimazawa ,  Tsutomu Chou ,  Yoshihiro Tsuchiya ,  Kosuke Tanaka

IPC: G11B5/127 ,  G11B5/48 ,  G11B5/00 ,  G11B5/012

Abstract: A plasmon generator generates surface plasmon and generates near-field light from the surface plasmon at a distal end surface situated on an air bearing surface facing a magnetic recording medium. The plasmon generator has a first portion including the distal end surface, a second portion situated away from the air bearing surface, and a separating layer situated between the first portion and the second portion and separating the first portion from the second portion.

公开(公告)号：US09818436B2

公开(公告)日：2017-11-14

申请号：US15084956

申请日：2016-03-30

Applicant: TDK Corporation

Inventor： Koji Shimazawa ,  Shuji Okame ,  Yoshihiro Tsuchiya ,  Takafumi Kobayashi

IPC: G11B5/127 ,  G11B5/39 ,  G11B5/48 ,  G11B5/31 ,  G11B5/187 ,  G11B5/00 ,  G11B5/012 ,  G11B5/60

CPC classification number: G11B5/314 ,  G11B5/012 ,  G11B5/127 ,  G11B5/187 ,  G11B5/313 ,  G11B5/3133 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A thermal assisted magnetic recording head that performs magnetic recording while locally heating a magnetic recording medium includes: a plasmon generator that generates a surface plasmon and that generates near-field light from the surface plasmon on a front end surface positioned on an air bearing surface opposing the magnetic recording medium; a dielectric body layer positioned around the plasmon generator; and an adhesion layer positioned between the plasmon generator and the dielectric body layer. The adhesion layer is made from at least one of IrOx, RuOx, NiOx and CoOx.

公开(公告)号：US09620151B1

公开(公告)日：2017-04-11

申请号：US15152701

申请日：2016-05-12

Applicant: TDK Corporation

Inventor： Koji Shimazawa ,  Yoshihiro Tsuchiya ,  Shuji Okame

IPC: G11B5/33 ,  G11B11/00 ,  G11B5/31 ,  G11B5/48 ,  G11B5/60 ,  G11B5/00

CPC classification number: G11B5/314 ,  G02B6/1226 ,  G11B5/3163 ,  G11B2005/0021

Abstract: A plasmon generator generates a surface plasmon, and generates a near-field light from the surface plasmon on a front end surface positioned on an air bearing surface opposing to a magnetic recording medium. The plasmon generator has a first surface that is adjacent to the front end surface and that faces a lower layer where the plasmon generator is deposited, and a second surface at the back side of the first surface relative to a down track direction. The first surface tilts toward a surface that is orthogonal to the down track direction, and, is parallel to across track direction, and the plasmon generator is deposited with a (111) orientation from the first surface toward the second surface.