公开(公告)号：US20140177104A1

公开(公告)日：2014-06-26

申请号：US13727341

申请日：2012-12-26

Applicant: TDK CORPORATION

Inventor： Hideyuki UKITA ,  Kenta HARA ,  Kenkichi ANAGAWA ,  Yosuke ANTOKU ,  Masashi SANO ,  Shuji OKAME ,  Masaya KATO

IPC: G11B5/39

CPC classification number: G11B5/1278 ,  G11B5/235 ,  G11B5/3116 ,  G11B5/315

Abstract: A trailing shield is provided on a trailing side of a magnetic pole with a non-magnetic gap layer in between, and an intermediate layer having negative uniaxial magnetocrystalline anisotropy is provided between the non-magnetic gap layer and the trailing shield. The intermediate layer has a magnetic property in which an easy axis of magnetization is provided in an in-plane direction and thus magnetization is likely to occur in that direction, whereas a difficult axis of magnetization is provided in a direction intersecting the in-plane direction and thus magnetization is less likely to occur in that direction. Accordingly, magnetic flux becomes difficult to excessively flow from the magnetic pole into the trailing shield.

Abstract translation: 尾部屏蔽设置在磁极的后侧，其间具有非磁隙层，并且在非磁隙层和后屏蔽之间设置具有负单轴结晶各向异性的中间层。 中间层具有磁特性，其中容易的磁化轴在面内方向上提供，因此可能在该方向上发生磁化，而在与面内方向交叉的方向上提供难度的磁化轴 因此磁化不太可能在该方向上发生。 因此，磁通变得难以从磁极过渡到后挡板。

公开(公告)号：US20150332717A1

公开(公告)日：2015-11-19

申请号：US14277374

申请日：2014-05-14

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

Inventor： Kenta HARA ,  Kosuke TANAKA ,  Tetsuya ROPPONGI ,  Ryuji FUJII ,  Yasutoshi FUJITA

IPC: G11B5/48 ,  G11B5/31 ,  G11B5/60

CPC classification number: G11B5/314 ,  G11B5/1278 ,  G11B5/3106 ,  G11B5/3169 ,  G11B5/4866 ,  G11B5/6082 ,  G11B5/6088 ,  G11B2005/0021 ,  Y10T29/49034 ,  Y10T29/4905

Abstract: A thermal assisted magnetic recording head of the present invention has an air bearing surface (ABS) 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 ABS, and a main pole that faces the ABS and emits magnetic flux to the magnetic recording medium. The plasmon generator is opposite to a part of the core and extends to the generator front surface, is coupled with a portion of the propagating light that propagates through the core in the surface plasmon mode to generate a surface plasmon, propagates the surface plasmon to the generator front end surface, and generates near-field light (NF light) at the generator front end surface to irradiate the NF light to the magnetic recording medium. The ABS has a protrusion that is closer to the leading side than the generator front end surface in the down track direction, and that protrudes more toward the magnetic recording medium than the generator front end surface upon operation of the thermal assisted magnetic recording head.

Abstract translation: 本发明的热辅助磁记录头具有与磁记录介质相对的空气轴承表面（ABS），可将激光作为传播光传播的芯，包括面向ABS的发生器前端表面的等离子体发生器， 以及面向ABS并且向磁记录介质发射磁通的主极。 等离子体发生器与芯的一部分相对并延伸到发生器前表面，与表面等离子体模式中传播通过芯的传播光的一部分耦合以产生表面等离子体激元，将表面等离子体传播到 在发生器前端面产生近场光（NF光），将NF光照射到磁记录介质上。 ABS具有比沿着导轨方向更靠近发电机前端表面的前侧的突起，并且在热辅助磁记录头的操作时，比在发生器前端表面更向导磁体的突出。

公开(公告)号：US20140160597A1

公开(公告)日：2014-06-12

申请号：US13708507

申请日：2012-12-07

Applicant: TDK CORPORATION

Inventor： Norikazu OTA ,  Masahiro SAITO ,  Taro OIKE ,  Takeo KAGAMI ,  Yosuke ANTOKU ,  Kenkichi ANAGAWA ,  Kenta HARA ,  Tetsuro SASAKI ,  Shingo MIYATA ,  Katsuki KURIHARA

IPC: G11B5/11

CPC classification number: G11B5/1278 ,  G11B5/3116 ,  G11B5/315

Abstract: A magnetic head includes a main pole, a write shield, and a return path section. The write shield includes first and second shield portions located on opposite sides of the main pole in the track width direction. The return path section includes first and second yoke portions located on opposite sides of the main pole in the track width direction. The first yoke portion is connected to the first shield portion. The second yoke portion is connected to the second shield portion. A coil surrounds at least part of the entire outer periphery of the main pole when viewed from a medium facing surface.

Abstract translation: 磁头包括主极，写屏蔽和返回路径部分。 写屏蔽包括位于主磁极在磁道宽度方向的相对侧上的第一和第二屏蔽部分。 返回路径部分包括在轨道宽度方向上位于主极的相对侧上的第一和第二轭部分。 第一磁轭部分连接到第一屏蔽部分。 第二磁轭部分连接到第二屏蔽部分。 当从面向介质的表面观察时，线圈围绕主极的整个外周的至少一部分。