公开(公告)号：US10339965B2

公开(公告)日：2019-07-02

申请号：US15416065

申请日：2017-01-26

Applicant: TDK Corporation

Inventor： Yuki Nishimura ,  Norikazu Ota

IPC: G11B5/31 ,  G11B5/60 ,  G11B5/127 ,  G11B5/00

Abstract: A thermally assisted magnetic recording head has a waveguide that propagates laser light as propagating light; a main pole that has a first end portion on an air bearing surface (ABS) facing a magnetic recording medium and that emits a magnetic flux to the magnetic recording medium; a metal layer that is positioned between the main pole and the waveguide, that extends from a second end portion positioned on the ABS in a height direction, that generates surface plasmons from the propagating light, and that generates near-field light (NF light) from the surface plasmons at the second end portion; and a dielectric body layer that is surrounded by the metal layer and that extends from a third end portion positioned on the ABS in a height direction.

公开(公告)号：US09997178B1

公开(公告)日：2018-06-12

申请号：US15417540

申请日：2017-01-27

Applicant: TDK Corporation

Inventor： Yuki Nishimura ,  Norikazu Ota

IPC: G11B5/31 ,  G11B5/60 ,  G11B5/127 ,  G11B5/00

CPC classification number: G11B5/314 ,  G11B5/1278 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A thermally assisted magnetic recording head includes: a main pole that has a main pole end face at an air bearing surface opposing a magnetic recording medium and emits magnetic flux from the main pole end face; a waveguide that propagates laser light as propagation light and has a first waveguide section provided with an incidence end face on which the laser light is incident, a second waveguide section provided with a waveguide end face positioned close to the main pole end face on the air bearing surface, and a third waveguide section that connects the first waveguide section to the second waveguide section; a metal layer surrounds at least a portion of the first waveguide section, the entire circumference of the second waveguide section and at least a portion of the third waveguide section.

公开(公告)号：US09082432B1

公开(公告)日：2015-07-14

申请号：US14467231

申请日：2014-08-25

Applicant: TDK Corporation

Inventor： Yuji Matsuura ,  Atsushi Yamaguchi ,  Michitaka Nishiyama ,  Yumiko Yokoyama ,  Yuki Nishimura ,  Ittetsu Kitajima

IPC: G11B5/31 ,  G11B5/127

CPC classification number: G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/3163

Abstract: A thin film magnetic head has a main magnetic pole layer; a first trailing shield that is positioned at the trailing side of the main magnetic pole layer, and that is close to the main magnetic pole layer; and a second trailing shield that is positioned at the trailing side of the first trailing shield, and that continues to the first trailing shield. An end surface of the second trailing shield positioned at the back side in the height direction has a first end side positioned at a medium opposing surface side, and a second end side positioned at the further back side in the height direction than the first end side, and at the trailing side closer than the first end side. An angle formed by a plane including the first end side and the second end side and a plane parallel to both the height direction and the track width direction is 30 degrees to 60 degrees.

Abstract translation: 薄膜磁头具有主磁极层; 位于主磁极层的后侧并且靠近主磁极层的第一尾部屏蔽件; 以及位于所述第一后挡板的后侧并且继续到所述第一后挡板的第二后挡板。 位于高度方向后侧的第二后挡板的端面具有位于介质相对表面侧的第一端侧和位于高度方向上比第一端侧更靠后侧的第二端侧 ，并且在比第一端侧更靠近的后侧。 由包括第一端侧和第二端侧的平面和平行于高度方向和轨道宽度方向的平面形成的角度为30度至60度。