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1. 发明授权

US08462593B1 Thermal-assisted magnetic recording head having dielectric waveguide, metal waveguide and near-field light generating element 有权
标题翻译：具有介质波导，金属波导和近场光产生元件的热辅助磁记录头
公开(公告)号：US08462593B1
公开(公告)日：2013-06-11
申请号：US13367767
申请日：2012-02-07
申请人： Eiji Komura , Koji Shimazawa , Tsutomu Chou , Shinji Hara , Kosuke Tanaka
发明人： Eiji Komura , Koji Shimazawa , Tsutomu Chou , Shinji Hara , Kosuke Tanaka
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A magnetic head includes a dielectric waveguide to propagate propagation light; a metal waveguide facing the dielectric waveguide, coupling to the propagation light propagating through the dielectric waveguide in a surface plasmon mode, generating first surface plasmon with larger wavenumber than that of the propagation light, and propagating the first surface plasmon; a near-field light generating element facing the metal waveguide and extending to ABS, coupling to the first surface plasmon propagating on the metal waveguide in a surface plasmon mode, generating second surface plasmon with wavenumber larger than that of the first surface plasmon, propagating the second surface plasmon to an end part on the ABS side, and generating near-field light at the end part on the ABS side; and a recording magnetic pole provided in the vicinity of the near-field light generating element and having an end part positioned on the ABS.
摘要翻译：磁头包括传播传播光的电介质波导; 面向电介质波导的金属波导，以表面等离子体模式耦合到通过电介质波导传播的传播光，产生波数比传播光波数大的第一表面等离子体，并传播第一表面等离子体; 面向金属波导并延伸到ABS的近场光产生元件，以表面等离子体模式耦合到在金属波导上传播的第一表面等离子体激元，产生波数大于第一表面等离子体波的第二表面等离子体，传播第二表面等离子体激元到ABS侧的端部，并且在ABS侧的端部产生近场光; 以及设置在近场光产生元件附近并具有位于ABS上的端部的记录磁极。

2. 发明授权

US08437237B2 Light source unit including a photodetector, and thermally-assisted magnetic recording head 有权
标题翻译：光源单元包括光电检测器和热辅助磁记录头
公开(公告)号：US08437237B2
公开(公告)日：2013-05-07
申请号：US12986532
申请日：2011-01-07
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B7/00
CPC分类号： G11B5/314 , G01D5/34 , G11B5/6088 , G11B2005/0021
摘要： A light source unit includes a light source and a photodetector. The light source has an emission part for emitting light. The photodetector has a light receiving surface for receiving the light emitted from the emission part, and detects the light. The light source unit further includes a grating made of metal and disposed to extend along the light receiving surface. The grating includes a plurality of line-shaped portions that each extend in a direction intersecting the direction of travel of the light and that are located at positions different from each other along the direction of travel of the light.
摘要翻译：光源单元包括光源和光电检测器。光源具有用于发光的发射部分。光电检测器具有用于接收从发射部分发射的光的光接收表面，并检测光。光源单元还包括由金属制成并被设置为沿着光接收表面延伸的光栅。光栅包括多个线状部分，每个线状部分沿着与光的行进方向交叉的方向延伸，并且位于沿着光的行进方向彼此不同的位置。

3. 发明授权

US08405935B2 Magneto-resistive effect element having spacer layer including main spacer layer containing gallium oxide and nonmagnetic layer 有权
标题翻译：具有间隔层的磁阻效应元件包括含有氧化镓和非磁性层的主间隔层
公开(公告)号：US08405935B2
公开(公告)日：2013-03-26
申请号：US12979613
申请日：2010-12-28
申请人： Tsutomu Chou , Yoshihiro Tsuchiya , Hironobu Matsuzawa , Hayato Koike
发明人： Tsutomu Chou , Yoshihiro Tsuchiya , Hironobu Matsuzawa , Hayato Koike
IPC分类号： G11B5/39
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3929 , G11B2005/3996 , Y10T428/1121
摘要： A magnetoresistive effect element (MR element) includes first and second magnetic layers of which relative angles formed by magnetization directions change in relation to an external magnetic field; and a spacer layer positioned between the first magnetic layer and the second magnetic layer. The first magnetic layer is positioned on a side closer than the second magnetic layer in regards to a substrate above which the magnetoresistive effect element is formed, and the spacer layer includes a main spacer layer made of gallium oxide as the primary component, and a first nonmagnetic layer positioned between the main spacer layer and the first magnetic layer and contains copper and gallium.
摘要翻译：磁阻效应元件（MR元件）包括由磁化方向形成的相对角度相对于外部磁场而变化的第一和第二磁性层; 以及位于所述第一磁性层和所述第二磁性层之间的间隔层。相对于其上形成有磁阻效应元件的基板，第一磁性层位于比第二磁性层更靠近的一侧，并且间隔层包括以氧化镓为主要成分的主间隔层，第一磁性层位于主间隔层和第一磁性层之间并且包含铜和镓的非磁性层。

4. 发明授权

US08310791B2 Magnetoresistive effect element and magnetic disk device 有权
标题翻译：磁阻效应元件和磁盘装置
公开(公告)号：US08310791B2
公开(公告)日：2012-11-13
申请号：US12382309
申请日：2009-03-13
申请人： Takahiko Machita , Tomohito Mizuno , Koji Shimazawa , Tsutomu Chou , Daisuke Miyauchi , Yoshihiro Tsuchiya , Shinji Hara , Toshiyuki Ayukawa
发明人： Takahiko Machita , Tomohito Mizuno , Koji Shimazawa , Tsutomu Chou , Daisuke Miyauchi , Yoshihiro Tsuchiya , Shinji Hara , Toshiyuki Ayukawa
IPC分类号： G11B5/39
CPC分类号： G11B5/3929 , B82Y10/00 , B82Y25/00 , G11B2005/3996
摘要： A magnetoresistive effect element is structured in the manner that the antiferromagnetic layer interposed between the upper and lower shields is eliminated and the antiferromagnetic layer is positioned in a so-called shield layer. Therefore, it is realized to solve a pin reversal problem and to allow narrower tracks and narrower read gaps.
摘要翻译：磁阻效应元件的结构是，插入在上屏蔽和下屏蔽之间的反铁磁层被消除，反铁磁层位于所谓的屏蔽层中。因此，实现了解决引脚反转问题并且允许更窄的轨道和更窄的读取间隙。

5. 发明申请

US20120237796A1 MAGNETO-RESISTIVE EFFECT ELEMENT HAVING SPACER LAYER CONTAINING GALLIUM OXIDE, PARTIALLY OXIDIZED COPPER 有权
标题翻译：含有氧化铝，部分氧化铜的间隔层的磁电阻效应元件
公开(公告)号：US20120237796A1
公开(公告)日：2012-09-20
申请号：US13049195
申请日：2011-03-16
申请人： Hayato KOIKE , Tsutomu CHOU , Yoshihiro TSUCHIYA , Hironobu MATSUZAWA
发明人： Hayato KOIKE , Tsutomu CHOU , Yoshihiro TSUCHIYA , Hironobu MATSUZAWA
IPC分类号： G11B5/39
CPC分类号： G11B5/3929 , B82Y10/00 , B82Y25/00 , G11B2005/3996 , Y10T428/1121
摘要： A magneto-resistive effect (MR) element includes first and second magnetic layers where a relative angle formed by magnetization directions changes in response to an external magnetic field and a spacer layer positioned between the first magnetic layer and the second magnetic layer. The first magnetic layer is positioned closer to a substrate above which the MR element is formed than the second magnetic layer. The spacer layer includes a main spacer layer that is composed of gallium oxide as a primary component and a bottom layer that is positioned between the main spacer layer and the first magnetic layer and that is composed of partially oxidized copper as a primary component.
摘要翻译：磁阻效应（MR）元件包括第一和第二磁性层，其中由磁化方向形成的相对角响应于外部磁场而变化，并且间隔层位于第一磁性层和第二磁性层之间。第一磁性层定位成比第二磁性层更靠近形成MR元件的衬底。间隔层包括由氧化镓作为主要成分构成的主间隔层和位于主间隔层和第一磁性层之间并由部分氧化的铜作为主要成分的底层。

6. 发明授权

US08264920B1 Near-field light generator and thermally-assisted magnetic recording head 有权
标题翻译：近场光发生器和热辅助磁记录头
公开(公告)号：US08264920B1
公开(公告)日：2012-09-11
申请号：US13191913
申请日：2011-07-27
申请人： Tsutomu Chou , Eiji Komura , Shinji Hara , Daisuke Miyauchi , Kosuke Tanaka
发明人： Tsutomu Chou , Eiji Komura , Shinji Hara , Daisuke Miyauchi , Kosuke Tanaka
IPC分类号： G11B11/00 , G11B7/135
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G11B5/3116 , G11B5/6088 , G11B2005/0021
摘要： A near-field light generator includes a waveguide, a plasmon generator, and a metal layer. The waveguide includes a core having an evanescent light generating surface. The plasmon generator includes a base part, and a protruding part that protrudes from the base part toward the evanescent light generating surface. The protruding part has: a front end face located at an end in a direction parallel to the evanescent light generating surface; a band-shaped flat surface facing toward the evanescent light generating surface; and two side surfaces connected to the flat surface. In at least a portion of the protruding part, the distance between the two side surfaces increases with increasing distance from the evanescent light generating surface. The flat surface includes a first portion contiguous with the front end face, and a second portion that is located farther from the front end face than is the first portion. The metal layer has an end face facing the first portion. The evanescent light generating surface faces the second portion.
摘要翻译：近场光发生器包括波导管，等离子体激元发生器和金属层。波导包括具有ev逝光产生表面的芯。等离子体发生器包括基部和从基部朝向渐逝光产生表面突出的突出部分。所述突出部具有：前端面，其位于与所述ev逝光生成面平行的方向的端部; 面向渐逝光产生表面的带状平坦表面; 以及连接到平坦表面的两个侧表面。在突出部分的至少一部分中，两个侧表面之间的距离随着与渐消光产生表面的距离的增加而增加。平坦表面包括与前端面相邻的第一部分，以及比第一部分更远离前端面的第二部分。金属层具有面向第一部分的端面。渐逝光产生表面面向第二部分。

7. 发明授权

US08264919B2 Thermal assisted magnetic recording head having spot size converter 有权
标题翻译：具有光斑尺寸转换器的热辅助磁记录头
公开(公告)号：US08264919B2
公开(公告)日：2012-09-11
申请号：US12659094
申请日：2010-02-25
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Seiichi Takayama
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Seiichi Takayama
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G02B6/1228 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A spot size converter according to the present invention is capable of shortening the waveguide length in the spot size converter and of promoting a size reduction of the optical waveguide itself because two cores having a taper portion are combined and those tapering angles are mutually aligned. Furthermore, spot size conversion efficiency is favorable even in a small size.
摘要翻译：根据本发明的点尺寸转换器能够缩短光斑尺寸转换器中的波导长度并且促进光波导本身的尺寸减小，因为具有锥形部分的两个芯体组合并且这些渐缩角度相互对准。此外，即使在小尺寸的情况下，光斑尺寸转换效率也是有利的。

8. 发明申请

US20120212860A1 MAGNETO-RESISTIVE EFFECT ELEMENT HAVING SPACER LAYER INCLUDING GALLIUM OXIDE LAYER WITH METAL ELEMENT 有权
标题翻译：具有包含金属元素的氧化铝层的间隔层的磁电阻效应元件
公开(公告)号：US20120212860A1
公开(公告)日：2012-08-23
申请号：US13029415
申请日：2011-02-17
申请人： Hayato KOIKE , Tsutomu CHOU , Yoshihiro TSUCHIYA , Hironobu MATSUZAWA
发明人： Hayato KOIKE , Tsutomu CHOU , Yoshihiro TSUCHIYA , Hironobu MATSUZAWA
IPC分类号： G11B5/56 , G11B5/48 , G11B5/39
CPC分类号： G11B5/3912 , B82Y10/00 , B82Y25/00 , G11B5/3906 , G11B5/3929 , G11B2005/3996
摘要： A magneto-resistive effect (MR) element includes: first and second magnetic layers in which a relative angle formed by magnetization directions changes according to an external magnetic field; and a spacer layer positioned between the first magnetic layer and the second magnetic layer. The spacer layer includes a main spacer layer composed of gallium oxide as a primary component and containing at least one metal element selected from a group of magnesium, zinc, indium and aluminum.
摘要翻译：磁阻效应（MR）元件包括：由磁化方向形成的相对角度根据外部磁场而变化的第一和第二磁性层; 以及位于所述第一磁性层和所述第二磁性层之间的间隔层。间隔层包括由氧化镓作为主要成分构成的主要间隔层，并含有至少一种选自镁，锌，铟和铝的金属元素。

9. 发明申请

US20120120780A1 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD COMPRISING PLASMON GENERATOR 有权
标题翻译：包括等离子发生器的热辅助磁记录头
公开(公告)号：US20120120780A1
公开(公告)日：2012-05-17
申请号：US12946103
申请日：2010-11-15
申请人： EIJI KOMURA , TSUTOMU CHOU , KOJI SHIMAZAWA
发明人： EIJI KOMURA , TSUTOMU CHOU , KOJI SHIMAZAWA
IPC分类号： G11B13/08 , B82Y10/00
CPC分类号： G11B5/314 , G02B6/1226 , G11B5/3116 , G11B5/6088 , G11B2005/0021
摘要： Provided is a thermally-assisted magnetic recording head in which NF-light with sufficiently high light density can be applied to a medium while a write-field generating point and a near-field light (NF-light) generating point are close to each other. The head comprises a plasmon generator provided between a magnetic pole and a waveguide and configured to be coupled with light propagating through the waveguide in a surface plasmon mode to emit NF-light. The plasmon generator comprises: a plasmon propagating part comprising a propagation edge for propagating surface plasmon excited by the light; and a light penetration suppressing part with an extinction coefficient greater than the plasmon propagating part. The light penetration suppressing part is in surface-contact with a surface portion of the plasmon propagating part excluding the propagation edge, and the magnetic pole is in surface-contact with the light penetration suppressing part. This configuration can avoid significant reduction in light use efficiency of an optical system generating NF-light due to partial absorption of electromagnetic field (light) into the magnetic pole.
摘要翻译：本发明提供一种热辅助磁记录头，其中写入场产生点和近场光（NF-光）产生点彼此靠近的情况下，能够将具有足够高的光密度的NF光施加到介质上。头部包括设置在磁极和波导之间的等离子体激元发生器，其被配置为以表面等离子体模式传播通过波导的光耦合，以发射NF光。等离子体发生器包括：等离子体激元传播部分，包括用于传播由光激发的表面等离子体激元的传播边缘; 以及具有大于等离子体激元传播部分的消光系数的光穿透抑制部分。透光抑制部与除了传播边缘之外的等离子体激元传播部分的表面部分表面接触，并且磁极与透光抑制部分表面接触。该结构可以避免由于电磁场（光）向磁极的部分吸收而产生NF光的光学系统的光使用效率的显着降低。

10. 发明授权

US08130599B2 Thermally-assisted magnetic recording head comprising near-field optical device with propagation edge 有权
标题翻译：包括具有传播边缘的近场光学装置的热辅助磁记录头
公开(公告)号：US08130599B2
公开(公告)日：2012-03-06
申请号：US12616924
申请日：2009-11-12
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： There is provided a near-field-light (NFL) generating optical system in which the point where near-field (NF) light is generated can be provided sufficiently close to the end surface of a magnetic pole that generates write field. The optical system comprises: a waveguide through which a light for exciting surface plasmon propagates; and a NF-optical device configured to be coupled with the light in a surface plasmon mode. The NF-optical device comprises: an opposed-to-waveguide surface opposed to the waveguide with a predetermined distance; and a propagation edge provided on the side opposite to the opposed-to-waveguide surface, extending to the NFL-generating end surface of the device, and configured to propagate thereon the surface plasmon excited by the light. In this optical system, the point, where NF-light is generated, of the NFL-generating end surface can be located on the side opposite to the waveguide.
摘要翻译：提供了一种产生近场（NF）光的点的近场光（NFL）产生光学系统，其可以充分靠近生成写入场的磁极的端面附近。该光学系统包括：用于激发表面等离子体激元的光传播的波导; 以及配置成以表面等离子体激发模式与光耦合的NF光学装置。 NF型光学器件包括：与波导相对的与波导相对的预定距离的相对的波导表面; 以及设置在与所述相对的波导表面相对的一侧的传播边缘，延伸到所述装置的产生NFL的端面，并且被配置为在其上传播由所述光激发的表面等离子体。在该光学系统中，产生NFL的点的产生NFL的端面可以位于与波导相对的一侧。

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