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1.发明授权Thermally-assisted magnetic recording head, head gimbals assembly, head arm assembly and magnetic recording unit 有权热辅助磁记录头，头架万向节组件，头臂组件和磁记录单元公开(公告)号：US09153267B1
公开(公告)日：2015-10-06
申请号：US14276751
申请日：2014-05-13
Applicant: TDK CORPORATION
Inventor： Eiji Komura , Shinji Hara , Norikazu Ota , Tetsuya Roppongi , Kosuke Tanaka
CPC classification number: G11B5/6088 , G11B5/314 , G11B2005/0021
Abstract: A thermally-assisted magnetic recording head of the invention includes: a waveguide; a plasmon generator; and a light-absorbing protrusion layer provided on a leading side of the plasmon generator. A ratio W1/W2 is within a range from 2/3 to 55/3, where W1 is a width of the light-absorbing protrusion layer in an air-bearing surface, and W2 is a width of the waveguide in the air-bearing surface.
Abstract translation: 本发明的热辅助磁记录头包括：波导; 等离子体发生器; 以及设置在等离子发生器的前侧的吸光突起层。 比W1 / W2在2/3〜55/3的范围内，其中W1是空气轴承表面中的吸光突起层的宽度，W2是空气轴承中的波导的宽度 表面。
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公开(公告)号：US09025422B2
公开(公告)日：2015-05-05
申请号：US13849735
申请日：2013-03-25
Applicant: TDK Corporation
Inventor： Susumu Aoki , Kosuke Tanaka , Keita Kawamori , Hiroki Kawato , Takeshi Tsutsumi
CPC classification number: G21K1/00 , G11B5/314 , G11B5/6088 , G11B2005/0021
Abstract: The present invention relates to a plasmon generator, in which a surface plasmon is excited by application of light. The plasmon generator extends along one direction. The plasmon generator includes a first end surface that is positioned on one end in the one direction and at which near-field light is generated along with the excitation of the plasmon; and a second cross section that is substantially parallel to the first end surface and is away from the first end surface. The first end surface has a polygonal shape that does not have a substantially acute inner angle. The second cross section has an upper part that has a shape substantially the same as or similar to that of the first end surface and a flare shaped lower part that is connected to the upper part and has a width that increases as it is far from the upper part.
Abstract translation: 本发明涉及一种等离子体激元，其中通过施加光使表面等离子体激发。 等离子体发生器沿着一个方向延伸。 所述等离子体发生器包括位于一个方向的一端并与所述等离子体激元一起产生近场光的第一端面; 以及第二横截面，其基本上平行于第一端面并远离第一端面。 第一端面具有不具有基本上急剧的内角的多边形形状。 第二横截面具有与第一端面基本相同或类似的形状的上部，以及连接到上部的喇叭形下部，其宽度随着远离 上面的部分。
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3.发明授权公开(公告)号：US08675457B1
公开(公告)日：2014-03-18
申请号：US13687552
申请日：2012-11-28
Applicant: TDK Corporation
Inventor： Kei Hirata , Keita Kawamori , Nobuyuki Mori , Kosuke Tanaka
IPC: G11B11/00
CPC classification number: G11B5/314 , G11B5/6088 , G11B2005/0021
Abstract: A near-field light generator includes a waveguide, a plasmon generator, and an MgO layer. The waveguide includes a core and a cladding. The plasmon generator has an outer surface including a plasmon exciting part and a near-field light generating part, and is configured so that a surface plasmon is excited on the plasmon exciting part based on light propagating through the core, and the near-field light generating part generates near-field light based on the surface plasmon. The MgO layer is in contact with at least part of the outer surface of the plasmon generator excluding the near-field light generating part, and not in contact with the core. The cladding is lower in refractive index than the core and the MgO layer.
Abstract translation: 近场光发生器包括波导管，等离子体发生器和MgO层。 波导包括芯和包层。 等离子体发生器具有包括等离子体激元部分和近场光产生部分的外表面，并且被配置为使得表面等离子体激元基于通过芯传播的光而激发在等离子体激元部分上，并且近场光 基于表面等离子体产生近场光。 MgO层与除了近场光产生部分之外的等离子体发生器的外表面的至少一部分接触，并且不与芯接触。 包层的折射率低于芯层和MgO层。
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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
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.
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公开(公告)号：US09165569B1
公开(公告)日：2015-10-20
申请号：US14276409
申请日：2014-05-13
Applicant: TDK CORPORATION
Inventor： Takafumi Kobayashi , Susumu Aoki , Kosuke Tanaka , Tsutomu Chou , Koji Shimazawa
CPC classification number: G11B5/235 , G02B6/00 , G02B6/122 , G11B5/3116 , G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0021
Abstract: Thermally-assisted magnetic recording head, includes: a magnetic pole having an end exposed on an air-bearing surface; a waveguide; a plasmon generator having a first and second region, first region extending backward from the air-bearing surface to a first position, second region being coupled with the first region at the first position, extending backward from first position, and having a width in a track-width direction, and width in the track-width direction of second region being larger than a width in the track-width direction of first region; an adhesion layer having an end exposed on the air-bearing surface and a first adhesion region, the first adhesion region being in close contact with an end face in the track-width direction of first region; and a cladding layer located around plasmon generator and adhesion layer. Adhesion force between adhesion layer and plasmon generator is greater than adhesion force between cladding layer and plasmon generator.
Abstract translation: 热辅助磁记录头包括：具有暴露在空气轴承表面上的端部的磁极; 波导; 具有第一和第二区域的等离子体发生器，从空气轴承表面向后延伸到第一位置的第一区域，第二区域与第一位置处的第一区域耦合，从第一位置向后延伸，并且具有 轨道宽度方向和第二区域的轨道宽度方向上的宽度大于第一区域的轨道宽度方向上的宽度; 具有暴露在空气轴承表面上的端部和第一粘附区域的粘合层，所述第一粘合区域与第一区域的轨道宽度方向上的端面紧密接触; 以及位于等离子体发生器和粘附层周围的包覆层。 粘附层和等离子体发生器之间的粘附力大于包层和等离子体发生器之间的粘附力。
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Patent Agency Ranking
6.发明授权Thermally-assisted magnetic recording head, head gimbal assembly, and magnetic recording device 有权热辅助磁记录头，磁头万向节组件和磁记录装置公开(公告)号：US08873351B1
公开(公告)日：2014-10-28
申请号：US14011910
申请日：2013-08-28
Applicant: TDK Corporation
Inventor： Susumu Aoki , Kosuke Tanaka , Shinji Hara , Tsutomu Chou
CPC classification number: G11B5/314 , G02B6/1226 , G11B5/3133 , G11B5/6088 , G11B2005/0021
Abstract: A thermally assisted magnetic recording head includes a plasmon-generator that generates near-field light (NF light) from a near-field light generating portion on a near field light generator end surface constituting a portion of the medium opposing surface. The plasmon-generator has a first PG part having the near field light generator end surface constituting a portion of the medium opposing surface, and a second PG part positioned at a back side compared to the medium opposing surface when viewed from the medium opposing surface side. When viewed from the medium opposing surface side, the first PG part extends toward the back side from the medium opposing surface, and the second PG part is placed to contact at least a portion of both side surfaces of the first PG part. A material that configures the first PG part is a material having high thermostability compared to a material that configures the second PG part, and the material that configures the second PG part is a material having high excitation efficiency of plasmon compared to the material that configures the first PG part.
Abstract translation: 热辅助磁记录头包括等离子体发生器，其在构成介质相对表面的一部分的近场光产生器端表面上产生近场光产生部分的近场光（NF光）。 等离子体发生器具有第一PG部分，其具有构成介质相对表面的一部分的近场光产生器端表面，以及当从介质相对表面侧观察时，位于背面的第二PG部分 。 当从介质相对表面侧观察时，第一PG部分从介质相对表面朝向后侧延伸，并且第二PG部分被放置成接触第一PG部分的两个侧表面的至少一部分。 配置第一PG部件的材料是与构成第二PG部件的材料相比具有高热稳定性的材料，并且构成第二PG部件的材料是与构成第二PG部件的材料相比具有高等离子体激发效率的材料 第一PG部分。
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公开(公告)号：US08873185B2
公开(公告)日：2014-10-28
申请号：US13849784
申请日：2013-03-25
Applicant: TDK Corporation
Inventor： Kosuke Tanaka , Susumu Aoki , Keita Kawamori , Hiroki Kawato
CPC classification number: G11B5/3163 , G11B5/1278 , G11B5/314 , G11B2005/0021
Abstract: The thermally-assisted magnetic recording head includes: a magnetic pole having an end exposed on an air-bearing surface; a waveguide; a plasmon generator formed essentially of a first metallic material, and having a first region and a second region, the first region extending backward from the air-bearing surface to a first position, and the second region being coupled with the first region at the first position and extending backward from the first position; and a metallic layer filling a part in the second region, and formed essentially of a second metallic material that has a higher melting temperature than a melting temperature of the first metallic material.
Abstract translation: 热辅助磁记录头包括：具有暴露在空气轴承表面上的端部的磁极; 波导; 基本上由第一金属材料形成并具有第一区域和第二区域的等离子体发生器，所述第一区域从空气支承表面向后延伸到第一位置，并且所述第二区域在第一区域与第一区域耦合 位置并从第一位置向后延伸; 以及填充在第二区域中的部分的金属层，并且基本上由具有比第一金属材料的熔融温度更高的熔融温度的第二金属材料形成。
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公开(公告)号：US08817581B1
公开(公告)日：2014-08-26
申请号：US13774521
申请日：2013-02-22
Applicant: TDK Corporation
Inventor： Takeshi Tsutsumi , Ryo Hosoi , Tetsuya Roppongi , Kosuke Tanaka
CPC classification number: G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0021 , Y10T29/49032
Abstract: A plasmon generator of a thermally-assisted magnetic recording head has a first configuration member having a near-field light generation end surface at an ABS, and a second configuration member being in contact with main magnetic pole, and terminating at a front end portion of a slope positioned at the position recessed from the ABS. An end part of a separator layer, which is interposed between the main magnetic pole and the first configuration member, on a side opposite to the ABS is at a position more recessed from the air bearing surface than the front end portion of the slope of the second configuration member.
Abstract translation: 热辅助磁记录头的等离子体发生器具有在ABS处具有近场光产生端面的第一配置构件和与主磁极接触的第二配置构件，并且终止于 位于从ABS凹陷的位置的斜面。 介于主磁极和第一构造构件之间的分隔层的与ABS相反的一侧的端部处于比空气轴承表面更凹下的位置，该位置比斜边的前端部 第二配置成员。
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9.发明授权公开(公告)号：US08767348B1
公开(公告)日：2014-07-01
申请号：US13789086
申请日：2013-03-07
Applicant: TDK Corporation
Inventor： Kosuke Tanaka , Susumu Aoki , Keita Kawamori , Hiroki Kawato
CPC classification number: G11B5/6088 , G11B5/314 , G11B2005/0021
Abstract: The thermally-assisted magnetic recording head of the invention includes: a waveguide; a magnetic pole; a cladding layer provided between the waveguide and the magnetic pole; and a plasmon generator embedded in the cladding layer. The cladding layer includes a first cladding section located on a side close to an air-bearing surface and a second cladding section located on a side far from the air-bearing surface, and a thermal expansion coefficient of the first cladding section is larger than a thermal expansion coefficient of the second cladding section.
Abstract translation: 本发明的热辅助磁记录头包括：波导; 磁极 设置在波导和磁极之间的包层; 以及嵌入包层中的等离子体发生器。 包覆层包括位于靠近空气轴承表面的一侧的第一包层部分和位于远离空气轴承表面的一侧的第二包层部分，并且第一包层部分的热膨胀系数大于 第二包层部的热膨胀系数。
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10.发明授权Thermal assisted magnetic recording head with protrusion on leading side of plasmon generator 有权热辅助磁记录头，在等离子体发生器的前端具有突起公开(公告)号：US09190084B1
公开(公告)日：2015-11-17
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
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。
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