公开(公告)号：US08325570B1

公开(公告)日：2012-12-04

申请号：US13363795

申请日：2012-02-01

申请人： Kosuke Tanaka ,  Tetsuya Roppongi ,  Kei Hirata ,  Susumu Aoki ,  Takahiko Izawa ,  Makoto Isogai ,  Keita Kawamori ,  Takeshi Tsutsumi

发明人： Kosuke Tanaka ,  Tetsuya Roppongi ,  Kei Hirata ,  Susumu Aoki ,  Takahiko Izawa ,  Makoto Isogai ,  Keita Kawamori ,  Takeshi Tsutsumi

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes: a medium facing surface; a magnetic pole; a waveguide including a core and a cladding; a plasmon generator; and a protruding member. The protruding member is disposed between the medium facing surface and a front end face of the core facing toward the medium facing surface. The protruding member has a first end face located in the medium facing surface, and a second end face facing toward the front end face of the core and receiving light having propagated through the core and passed through the front end face. The protruding member is formed of a metal different from both a material forming the magnetic pole and a material forming the plasmon generator. The protruding member is heated and expanded by the light received at the second end face, so that the first end face gets protruded toward a magnetic recording medium.

摘要翻译： 一种热辅助磁记录头包括：面向介质的表面; 磁极 包括芯和包层的波导; 等离子体发生器; 和突出部件。 突出构件设置在面向介质的表面和芯的前端面之间，面向面向介质的表面。 突出构件具有位于介质相对表面中的第一端面和面向芯的前端面的第二端面，并且接收已经穿过芯并且穿过前端面的光。 突出部件由不同于形成磁极的材料和形成等离子体激元发生器的材料形成。 突出部件被第二端面所接收的光线加热膨胀，使得第一端面朝向磁记录介质突出。

公开(公告)号：US08077558B1

公开(公告)日：2011-12-13

申请号：US12785897

申请日：2010-05-24

申请人： Takeshi Tsutsumi ,  Daisuke Miyauchi ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Susumu Aoki ,  Takahiko Izawa ,  Tsutomu Chou

发明人： Takeshi Tsutsumi ,  Daisuke Miyauchi ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Susumu Aoki ,  Takahiko Izawa ,  Tsutomu Chou

IPC分类号： G11B11/00

CPC分类号： G11B5/3163 ,  B82Y20/00 ,  G02B5/008 ,  G02B6/1226 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B7/1384 ,  G11B7/1387 ,  G11B2005/0021 ,  Y10T29/49032

摘要： A plasmon generator has an outer surface including a plasmon exciting part that faces an evanescent light generating surface of a waveguide. The outer surface further includes first and second inclined surfaces that increase in distance from each other with increasing distance from the plasmon exciting part, and a front end face. The front end face has first and second portions that are connected to each other into a V-shape. The first portion includes a first side lying at an end of the first inclined surface. The second portion includes a second side lying at an end of the second inclined surface. An angle formed between a lower part of the first side and a lower part of the second side is smaller than that formed between an upper part of the first side and an upper part of the second side.

摘要翻译： 等离子体发生器具有外表面，其包括面向波导的ev逝光产生表面的等离子体激元部分。 外表面还包括第一和第二倾斜表面，该第一和第二倾斜表面随距距等离子体激元部分的距离增加而彼此间隔开，并且前端面。 前端面具有彼此连接成V形的第一和第二部分。 第一部分包括位于第一倾斜表面的端部的第一侧。 第二部分包括位于第二倾斜表面的端部的第二侧。 形成在第一侧的下部和第二侧的下部之间的角度小于在第一侧的上部和第二侧的上部之间形成的角度。

公开(公告)号：US08570843B2

公开(公告)日：2013-10-29

申请号：US13402318

申请日：2012-02-22

申请人： Kei Hirata ,  Kosuke Tanaka ,  Tsutomu Chou ,  Susumu Aoki ,  Makoto Isogai ,  Tetsuya Roppongi

发明人： Kei Hirata ,  Kosuke Tanaka ,  Tsutomu Chou ,  Susumu Aoki ,  Makoto Isogai ,  Tetsuya Roppongi

IPC分类号： G11B11/00

CPC分类号： G11B5/313 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/3146 ,  G11B5/6088 ,  G11B2005/0021

摘要： The present invention provides a thermally assisted magnetic head with improved recording performance. The thermally assisted magnetic head includes a recording element and a near-field light generating element. The recording element includes a main pole appearing on a medium-facing surface, and a bit inversion starting region intended to be a maximum recording magnetic field generating position is formed at a leading edge of the main pole. The near-field light generating element is located on a leading side of the main pole and capable of creating a heating spot due to a near-field light on a near-field light generating end face appearing on the medium-facing surface. The bit inversion starting region is located within one-half of a diameter of the heating spot from a center of the heating spot.

摘要翻译： 本发明提供了具有改进的记录性能的热辅助磁头。 热辅助磁头包括记录元件和近场光产生元件。 记录元件包括出现在面向中间的表面上的主极，并且在主极的前缘形成旨在成为最大记录磁场产生位置的位反转起始区。 近场光产生元件位于主极的前导侧，并且能够在出现在面向中间的表面上的近场光产生端面上产生由于近场光产生的加热点。 位反转起始区域位于加热点的直径从加热点的中心的一半的范围内。

公开(公告)号：US08462594B1

公开(公告)日：2013-06-11

申请号：US13405893

申请日：2012-02-27

申请人： Susumu Aoki ,  Kosuke Tanaka ,  Tetsuya Roppongi ,  Kei Hirata ,  Takeshi Tsutsumi

发明人： Susumu Aoki ,  Kosuke Tanaka ,  Tetsuya Roppongi ,  Kei Hirata ,  Takeshi Tsutsumi

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a medium facing surface, a magnetic pole, a waveguide including a core and a cladding, and a plasmon generator. The magnetic pole is located forward of the core in the direction of travel of a magnetic recording medium. The plasmon generator is disposed between the core and the magnetic pole. The core has an evanescent light generating surface facing toward the plasmon generator. The plasmon generator has a front end face located in the medium facing surface, a flat surface facing toward the'evanescent light generating surface, and first and second side surfaces that are at a distance from each other and are located farther from the evanescent light generating surface than is the flat surface.

摘要翻译： 一种热辅助磁记录头包括面向介质的表面，磁极，包括芯和包层的波导，以及等离子体激元发生器。 磁极位于磁芯的前方，位于磁记录介质的行进方向。 等离子体发生器设置在芯和磁极之间。 核心具有面向等离子体发生器的ev逝光产生表面。 等离子体激元发生器具有位于介质面向表面中的前端面，面向朝向光生成表面的平坦表面，以及彼此相距一定距离并且远离产生ev逝光的第一和第二侧表面 表面比平坦的表面。

公开(公告)号：US20110176398A1

公开(公告)日：2011-07-21

申请号：US12688367

申请日：2010-01-15

申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

IPC分类号： G11B11/00

CPC分类号： G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a waveguide through which a light for exciting surface plasmon propagates, a near-field optical device configured to be coupled with the light in a surface plasmon mode and to emit near-field light from a near-field-light-generating end surface that forms a portion of an opposed-to-medium surface, and a magnetic pole for generating write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface having a contact to the waveguide, and a propagation edge provided on a side opposite to the contact-to-waveguide surface, extending to the near-field-light-generating end surface, and configured to propagate there on the surface plasmon excited by the light. A gap between a near-field optical device-opposed surface of the magnetic pole and the propagation edge of the near-field optical device is larger at a section far from the end on the opposed-to-medium surface side than that at a section near the on the opposed-to-medium surface side.

摘要翻译： 热辅助磁记录头包括用于激发表面等离子体激元的光传播的波导，被配置成以表面等离子体激元模式与光耦合的近场光学装置，并且从近场发射近场光 形成相对中间表面的一部分的光产生端面，以及用于从其相对中间表面侧的端部产生写入场的磁极。 近场光学器件包括与波导接触的接触到波导表面，以及设置在与波导表面相对的一侧的传播边缘，延伸到近场光产生端 并且被配置为在由光激发的表面等离子体上传播。 磁场的近场光学器件相对表面与近场光学器件的传播边缘之间的间隙在远离相对于介质表面侧的端部的部分处比在部分 靠近对面 - 中等表面侧。

公开(公告)号：US08208349B2

公开(公告)日：2012-06-26

申请号：US12688367

申请日：2010-01-15

申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

IPC分类号： G11B11/00

CPC分类号： G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a waveguide, a near-field optical device which emits near-field light from a near-field-light-generating end surface that forms a portion of an opposed-to-medium surface, and a magnetic pole generates write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface, and a propagation edge configured to propagate there on the surface plasmon excited by the light. A gap between a near-field optical device-opposed surface of the magnetic pole and the propagation edge of the near-field optical device is larger at a section far from the end on the opposed-to-medium surface side than that at a section near the opposed-to-medium surface side.

摘要翻译： 热辅助磁记录头包括波导，近场光学装置，其从形成相对中间表面的一部分的近场光产生端面发射近场光，以及磁场 极点从其相对到中等表面侧的端部产生写入场。 近场光学器件包括接触到波导表面，以及配置成在由光激发的表面等离子体激元上传播的传播边缘。 磁场的近场光学器件相对表面与近场光学器件的传播边缘之间的间隙在远离相对于介质表面侧的端部的部分处比在部分 靠近相对中的表面侧。

公开(公告)号：US08437230B2

公开(公告)日：2013-05-07

申请号：US13030634

申请日：2011-02-18

申请人： Susumu Aoki ,  Kosuke Tanaka ,  Takeshi Tsutsumi ,  Daisuke Miyauchi ,  Tetsuya Roppongi

发明人： Susumu Aoki ,  Kosuke Tanaka ,  Takeshi Tsutsumi ,  Daisuke Miyauchi ,  Tetsuya Roppongi

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： A heat-assisted magnetic write head includes a magnetic pole having an end surface exposed at an air bearing surface, a waveguide extending toward the air bearing surface to propagate light, and a plasmon generator provided between the magnetic pole and the waveguide, and generating near-field light from the air bearing surface, based on the light propagated through the waveguide. The plasmon generator has an end portion exposed at the air bearing surface or located in close proximity to the air bearing surface, the end portion having a minimum thickness in a region close to the waveguide.

摘要翻译： 一种热辅助磁性写头包括：具有在空气轴承表面露出的端面的磁极，朝向空气支承表面延伸以传播光的波导;以及设置在磁极和波导之间的等离子体激元发生器， 来自空气轴承表面的场光，基于通过波导传播的光。 等离子体发生器具有暴露在空气轴承表面处或者位于紧邻空气轴承表面的端部，端部在靠近波导的区域中具有最小厚度。

公开(公告)号：US08254215B1

公开(公告)日：2012-08-28

申请号：US13282943

申请日：2011-10-27

申请人： Kosuke Tanaka ,  Susumu Aoki ,  Kei Hirata ,  Makoto Isogai

发明人： Kosuke Tanaka ,  Susumu Aoki ,  Kei Hirata ,  Makoto Isogai

IPC分类号： G11B11/00

CPC分类号： G11B5/3116 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a main pole, a waveguide, and a plasmon generator. The main pole has a front end face including first and second ends that are opposite in a track width direction. An arbitrary cross section of the main pole that passes through an arbitrary point on the front end face and is perpendicular to a medium facing surface and to the track width direction has a length in a direction perpendicular to the medium facing surface. When the arbitrary point on the front end face is located at a center of the front end face in the track width direction, the length of the arbitrary cross section is smaller than that when the arbitrary point is located at the first end and that when the arbitrary point is located at the second end.

摘要翻译： 热辅助磁记录头包括主极，波导和等离子体发生器。 主极具有包括在轨道宽度方向上相对的第一端和第二端的前端面。 主极的任意横截面，其通过前端面上的任意点并且垂直于介质相对表面和轨道宽度方向，具有与面向介质的表面垂直的方向的长度。 当前端面上的任意点位于轨道宽度方向上的前端面的中心时，任意横截面的长度小于任意点位于第一端的长度，而当 任意点位于第二端。

公开(公告)号：US08432773B2

公开(公告)日：2013-04-30

申请号：US12962878

申请日：2010-12-08

申请人： Shinji Hara ,  Kosuke Tanaka ,  Keita Kawamori ,  Daisuke Miyauchi ,  Takahiko Izawa ,  Eiji Komura

发明人： Shinji Hara ,  Kosuke Tanaka ,  Keita Kawamori ,  Daisuke Miyauchi ,  Takahiko Izawa ,  Eiji Komura

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  B82Y10/00 ,  B82Y25/00 ,  G11B2005/0021

摘要： A thermally-assisted magnetic head that has an air bearing surface (ABS) facing a recording medium and that performs magnetic recording while heating the recording medium includes: a magnetic recording element that includes a pole of which an edge part is positioned on the ABS and which generates magnetic flux traveling to the recording medium; a waveguide that is configured with a core through which light propagates and a cladding, surrounding a periphery of the core, at least one part of which extends to the ABS; a plasmon generator that faces a part of the core and that extends toward the ABS side; and a bank layer that is positioned between the plasmon generator and the pole, and of which an edge part on the ABS side protrudes relative to the plasmon generator.

摘要翻译： 具有面向记录介质的空气轴承表面（ABS）并且在加热记录介质的同时执行磁记录的热辅助磁头包括：磁记录元件，其包括边缘部分位于ABS上的极点和 其产生传播到记录介质的磁通量; 波导，其配置有光传播的芯和包围芯，围绕芯的周边，其至少一部分延伸到ABS; 等离子体发生器，其面向所述芯的一部分并朝向ABS侧延伸; 以及位于等离子体发生器和极之间的堤层，并且ABS侧上的边缘部分相对于等离子体发生器突出。

公开(公告)号：US20120147716A1

公开(公告)日：2012-06-14

申请号：US12962878

申请日：2010-12-08

申请人： Shinji HARA ,  Kosuke Tanaka ,  Keita Kawamori ,  Daisuke Miyauchi ,  Takahiko Izawa ,  Eiji Komura

发明人： Shinji HARA ,  Kosuke Tanaka ,  Keita Kawamori ,  Daisuke Miyauchi ,  Takahiko Izawa ,  Eiji Komura

IPC分类号： G11B13/04 ,  G11B13/08 ,  B82Y10/00

CPC分类号： G11B5/314 ,  B82Y10/00 ,  B82Y25/00 ,  G11B2005/0021

摘要： A thermally-assisted magnetic head that has an air bearing surface (ABS) facing a recording medium and that performs magnetic recording while heating the recording medium includes: a magnetic recording element that includes a pole of which an edge part is positioned on the ABS and which generates magnetic flux traveling to the recording medium; a waveguide that is configured with a core through which light propagates and a cladding, surrounding a periphery of the core, at least one part of which extends to the ABS; a plasmon generator that faces a part of the core and that extends toward the ABS side; and a bank layer that is positioned between the plasmon generator and the pole, and of which an edge part on the ABS side protrudes relative to the plasmon generator.

摘要翻译： 具有面向记录介质的空气轴承表面（ABS）并且在加热记录介质的同时执行磁记录的热辅助磁头包括：磁记录元件，其包括边缘部分位于ABS上的极点和 其产生传播到记录介质的磁通量; 波导，其配置有光传播的芯和包围芯，围绕芯的周边，其至少一部分延伸到ABS; 等离子体发生器，其面向所述芯的一部分并朝向ABS侧延伸; 以及位于等离子体发生器和极之间的堤层，并且ABS侧上的边缘部分相对于等离子体发生器突出。