公开(公告)号：US20150294678A1

公开(公告)日：2015-10-15

申请号：US14250522

申请日：2014-04-11

Applicant: TDK Corporation

Inventor： Shinji HARA ,  Eiji KOMURA ,  Norikazu OTA ,  Daisuke MIYAUCHI ,  Tetsuya ROPPONGI ,  Koji SHIMAZAWA

IPC: G11B5/48 ,  G11B5/60 ,  G11B5/31

CPC classification number: G11B13/08 ,  G11B5/3106 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6076 ,  G11B5/6082 ,  G11B5/6088 ,  G11B7/1387 ,  G11B2005/0021

Abstract: A thermal assisted magnetic recording head has a magnetic head slider having an air bearing surface that is opposite to a magnetic recording medium, a core that can propagate laser light as propagating light, a plasmon generator that includes a generator front end surface facing the air bearing surface, and a main pole facing the air bearing surface, and a laser light generator that supplies the laser light to the core. The plasmon generator generates near-field light (NF light) at the generator front end surface to heat the magnetic recording medium. The main pole includes a main pole end surface that faces the air bearing surface and that is positioned in the vicinity of the generator front end surface, and emits a magnetic flux to the magnetic recording medium from the main pole end surface. At least a portion of the laser light that is not coupled with the plasmon generator thermally deforms the air bearing surface so that a part of the air bearing surface positioned closer to the leading side than the generator front end surface and the main pole end surface in the down track direction protrudes toward the magnetic recording medium.

Abstract translation: 热辅助磁记录头具有磁头滑块，其具有与磁记录介质相反的空气轴承表面，可以传播激光作为传播光的芯，等离子体激元发生器，其包括面向空气轴承的发生器前端表面 表面和面向空气轴承表面的主极;以及激光发生器，其将激光供应到芯。 等离子体发生器在发生器前端表面产生近场光（NF光），以加热磁记录介质。 主极包括面向空气轴承表面并且位于发生器前端表面附近的主极端面，并且从主极端面向磁记录介质发射磁通量。 不与等离子体发生器耦合的激光的至少一部分使空气轴承表面发生热变形，使得空气轴承表面的一部分比发生器前端表面和主极端表面更靠近前端 向下轨道方向朝向磁记录介质突出。

公开(公告)号：US20150262595A1

公开(公告)日：2015-09-17

申请号：US14204064

申请日：2014-03-11

Applicant: TDK Corporation

Inventor： Susumu AOKI ,  Takafumi KOBAYASHI ,  Kei HIRATA ,  Eiji KOMURA ,  Tsutomu CHOU

IPC: G11B5/48 ,  G11B5/11 ,  G11B5/60

CPC classification number: G11B5/1278 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021 ,  G11B2005/0024

Abstract: A thermally assisted magnetic recording head has a generator end surface facing an air bearing surface (ABS), and includes: a near-field light (NF light) generator that generates an NF light on the generator end surface and irradiates a magnetic recording medium with the NF light, and a main magnetic pole end surface positioned in the vicinity of the generator end surface; a main magnetic pole that emits a magnetic flux from the main magnetic pole end surface to the magnetic recording medium and a shield end surface positioned in the vicinity of the generator end surface; and a return shield that is magnetically linked to the main magnetic pole, and that absorbs the magnetic flux returning from the magnetic recording medium at the shield end surface. The main magnetic pole and the return shield are positioned to be on the same side with respect to the NF light generator in the down track direction, and the NF light generator does not overlap with the main magnetic pole either in the down track direction or in the cross track direction.

Abstract translation: 一种热辅助磁记录头具有面向空气轴承表面（ABS）的发生器端面，并且包括：近场光（NF光）发生器，其在发生器端面上产生NF光并照射磁记录介质 NF灯和位于发电机端面附近的主磁极端面; 从主磁极端面向磁记录介质发出磁通的主磁极和位于发电机端面附近的屏蔽端面; 以及与主磁极磁连接并且在屏蔽端面处吸收从磁记录介质返回的磁通的返回屏蔽。 主磁极和返回屏蔽体相对于NF光发生器沿向下方向位于同一侧，并且NF光发生器在主导方向上或与主磁极不重叠 十字轨道方向。