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1. 发明申请

US20090128965A1 CPP MAGNETO-RESISTIVE ELEMENT PROVIDED WITH A PAIR OF MAGNETIC LAYERS AND NICR BUFFER LAYER 审中-公开
标题翻译： CPP磁电元件提供一对磁性层和NICR缓冲层
公开(公告)号：US20090128965A1
公开(公告)日：2009-05-21
申请号：US11940511
申请日：2007-11-15
申请人： Tomohito MIZUNO , Yoshihiro TSUCHIYA , Shinji HARA , Koji SHIMAZAWA , Daisuke MIYAUCHI , Takahiko MACHITA , Tsutomu CHOU , Toshiyuki AYUKAWA , Hironobu MATSUZAWA , Tsuyoshi ICHIKI
发明人： Tomohito MIZUNO , Yoshihiro TSUCHIYA , Shinji HARA , Koji SHIMAZAWA , Daisuke MIYAUCHI , Takahiko MACHITA , Tsutomu CHOU , Toshiyuki AYUKAWA , Hironobu MATSUZAWA , Tsuyoshi ICHIKI
IPC分类号： G11B5/33
CPC分类号： G11B5/3912 , B82Y25/00 , G01R33/093 , G11B5/3906 , G11B5/3932 , H01L43/10
摘要： A magnetic field detecting element has a stack which includes a NiCr layer, a first magnetic layer whose magnetization direction varies in accordance with an external magnetic field, a non-magnetic spacer layer, and a second magnetic layer whose magnetization direction varies in accordance with the external magnetic field, said NiCr layer, said first magnetic layer, said spacer layer and said second magnetic layer being disposed in this order and being arranged in contact with each other, wherein a sense current is adapted to flow in a direction that is perpendicular to a film surface of said stack; and a bias magnetic layer which is disposed on a side of said stack, said side being opposite to an air bearing surface of said stack, wherein said bias magnetic layer is adapted to apply a bias magnetic field to said stack in a direction that is perpendicular to said air bearing surface. Both first and second magnetic layers have bcc crystalline structures, and said non-magnetic spacer layer has a film configuration in which an insulating layer or a semiconductor layer is inserted into a metal layer.
摘要翻译：磁场检测元件具有堆叠，其包括NiCr层，其磁化方向根据外部磁场变化的第一磁性层，非磁性间隔层和其磁化方向根据外部磁场，所述NiCr层，所述第一磁性层，所述间隔层和所述第二磁性层按此顺序设置并且彼此接触，其中感测电流适于沿垂直于所述堆叠的膜表面; 以及偏置磁性层，其设置在所述堆叠的一侧，所述侧面与所述堆叠的空气支承表面相对，其中所述偏置磁性层适于在垂直方向上向所述堆叠施加偏置磁场到所述空气轴承表面。第一和第二磁性层都具有bcc晶体结构，并且所述非磁性间隔层具有绝缘层或半导体层插入到金属层中的膜结构。

2. 发明申请

US20090061258A1 CPP-TYPE MAGNETORESISTANCE EFFECT ELEMENT HAVING CHARACTERISTIC FREE LAYERS 审中-公开
标题翻译：具有特征自由层的CPP型磁阻效应元件
公开(公告)号：US20090061258A1
公开(公告)日：2009-03-05
申请号：US11847521
申请日：2007-08-30
申请人： Tomohito MIZUNO , Yoshihiro TSUCHIYA , Shinji HARA , Koji SHIMAZAWA , Tsutomu CHOU
发明人： Tomohito MIZUNO , Yoshihiro TSUCHIYA , Shinji HARA , Koji SHIMAZAWA , Tsutomu CHOU
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , G01R33/093 , G11B5/3932 , Y10T428/1129
摘要： A magnetic field detecting element comprises: a stack which includes first, second and third magnetic layers whose magnetization directions change in accordance with an external magnetic field, a first non-magnetic intermediate layer which is sandwiched between the first magnetic layer and the second magnetic layer, the first non-magnetic intermediate layer producing a magnetoresistance effect between the first magnetic layer and the second magnetic layer, and a second non-magnetic intermediate layer which is sandwiched between the second magnetic layer and the third magnetic layer, the second non-magnetic intermediate layer allowing the second magnetic layer and the third magnetic layer to be exchange-coupled such that magnetization directions thereof are anti-parallel to each other under no magnetic field, the stack being adapted such that sense current flows in a direction that is perpendicular to a film surface thereof; and a bias magnetic layer which is provided on a side of the stack, the side being opposite to an air bearing surface of the stack, the bias magnetic layer applying a bias magnetic field to the stack in a direction that is perpendicular to the air bearing surface.
摘要翻译：磁场检测元件包括：堆叠，其包括其磁化方向根据外部磁场而变化的第一，第二和第三磁性层，夹在第一磁性层和第二磁性层之间的第一非磁性中间层在第一磁性层和第二磁性层之间产生磁阻效应的第一非磁性中间层和夹在第二磁性层和第三磁性层之间的第二非磁性中间层，第二非磁性中间层中间层，允许第二磁性层和第三磁性层交换耦合，使得其磁化方向在没有磁场的情况下彼此反平行，所述堆叠适于使得感测电流沿垂直于其膜表面; 以及偏置磁性层，其设置在所述堆叠的一侧，所述侧面与所述堆叠的空气支承表面相对，所述偏置磁性层沿垂直于所述空气轴承的方向向所述堆叠施加偏置磁场表面。

3. 发明申请

US20130258824A1 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD HAVING TEMPERATURE SENSOR EMBEDDED ON DIELECTRIC WAVEGUIDE 有权
标题翻译：具有埋在电介质波导上的温度传感器的热辅助磁记录头
公开(公告)号：US20130258824A1
公开(公告)日：2013-10-03
申请号：US13432245
申请日：2012-03-28
申请人： Eiji KOMURA , Koji SHIMAZAWA , Tsutomu CHOU , Shinji HARA , Kosuke TANAKA , Ryo HOSOI
发明人： Eiji KOMURA , Koji SHIMAZAWA , Tsutomu CHOU , Shinji HARA , Kosuke TANAKA , Ryo HOSOI
IPC分类号： G11B13/04 , G11B19/20 , G11B21/24
CPC分类号： G11B5/314 , G11B5/607 , G11B2005/0021
摘要： A thermal assisted magnetic recording head includes a dielectric waveguide that is configured to propagate propagation light a metal waveguide that is provided facing the dielectric waveguide and that couples to the propagation light propagating through the dielectric waveguide in a surface plasmon mode, thereby generating and propagating surface plasmon, a near-field light generator that is exposed on an air bearing surface facing a magnetic recording medium either at an end part of the metal waveguide or at a position facing the end part of the metal waveguide, and that generates near-field light from the surface plasmon, a magnetic pole for magnetic recording that is exposed on the air bearing surface, and a temperature sensor that is arranged inside the dielectric waveguide.
摘要翻译：热辅助磁记录头包括电介质波导，其被配置为传播传播光，所述介质波导设置成面对介质波导并且以表面等离子体模式耦合到传播通过介质波导的传播光，从而产生和传播表面等离子体激元，近场光发生器，其在面向金属波导的端部的面向磁记录介质的空气轴承表面上或面对金属波导的端部的位置处暴露，并且产生近场光从表面等离子体激元，暴露在空气轴承表面上的用于磁记录的磁极，以及布置在电介质波导内部的温度传感器。

4. 发明申请

US20130250742A1 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD, HEAD GIMBALS ASSEMBLY, HEAD ARM ASSEMBLY, MAGNETIC DISK UNIT, AND LIGHT TRANSMISSION UNIT 有权
标题翻译：热辅助磁记录头，头盔组件，头臂组件，磁盘单元和光传输单元
公开(公告)号：US20130250742A1
公开(公告)日：2013-09-26
申请号：US13426142
申请日：2012-03-21
申请人： Eiji KOMURA , Tsutomu CHOU , Koji SHIMAZAWA , Shinji HARA , Ryo HOSOI , Nobuyuki MORI , Yasutoshi FUJITA , Hideki TANZAWA
发明人： Eiji KOMURA , Tsutomu CHOU , Koji SHIMAZAWA , Shinji HARA , Ryo HOSOI , Nobuyuki MORI , Yasutoshi FUJITA , Hideki TANZAWA
IPC分类号： G11B13/04 , G02B6/26 , G11B21/24
CPC分类号： G11B5/3116 , G02B6/4208 , G11B5/105 , G11B5/1278 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： The thermally-assisted magnetic recording head includes: a laser light source having an emission surface, the emission surface allowing laser light to be emitted therefrom; a waveguide having a core and a cladding, the core allowing the laser light emitted from the laser light source to propagate therethrough, and the cladding surrounding the core; a magnetic pole; and a plasmon generator. Each of the core and the cladding has an end surface facing the emission surface, and the end surface of the cladding suppresses returning of the laser light to the laser light source.
摘要翻译：热辅助磁记录头包括：具有发射表面的激光光源，所述发射表面允许从其发射激光; 具有芯和包层的波导，所述芯允许从激光源发射的激光传播通过其中;以及围绕芯的包层; 磁极和等离子体发生器。芯和包层中的每一个具有面向发射表面的端表面，并且包层的端表面抑制激光返回到激光光源。

5. 发明申请

US20110222184A1 OPTICAL WAVEGUIDE AND THERMAL ASSIST MAGNETIC RECORDING HEAD THEREWITH 有权
标题翻译：光波导和热辅助磁记录头
公开(公告)号：US20110222184A1
公开(公告)日：2011-09-15
申请号：US12720083
申请日：2010-03-09
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： G11B5/02 , G02B6/26
CPC分类号： G02B6/1228 , B82Y20/00 , G02B6/1226 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： An optical waveguide, on account of its ability to apply phase resonance of a wavelength and of a first and second triangular plate-like spot size converter members formed of the same material as a core material and being arranged and formed in a substantially symmetrical structure, can promote shortening of the waveguide length and contrive to reduce the size of the optical waveguide itself. Further, an optical waveguide having excellent spot size conversion efficiency can be obtained even in a reduced size.
摘要翻译：光波导由于其施加波长的相位谐振的能力以及由与芯材相同的材料形成并以基本对称的结构形式构成的第一和第二三角形板状光斑尺寸转换器部件，可以促进波导长度的缩短并且有助于减小光波导本身的尺寸。此外，即使在减小的尺寸的情况下也可以获得具有优异的光斑尺寸转换效率的光波导。

6. 发明申请

US20110164479A1 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD COMPRISING WAVEGUIDE WITH INVERTED-TRAPEZOIDAL SHAPE 有权
标题翻译：带有倒角形状的包含波导的热辅助磁记录头
公开(公告)号：US20110164479A1
公开(公告)日：2011-07-07
申请号：US12683041
申请日：2010-01-06
申请人： Eiji KOMURA , Tsutomu CHOU , Koji SHIMAZAWA , Kosuke TANAKA
发明人： Eiji KOMURA , Tsutomu CHOU , Koji SHIMAZAWA , Kosuke TANAKA
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/314 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a thermally-assisted magnetic recording head comprising a near-field-light-generating (NFL-generating) optical system with an improved light use efficiency. The head comprises a magnetic pole, a waveguide propagating a light for exciting surface plasmon, and a NF-optical device configured to emit NF-light from its end surface located adjacent to the magnetic pole end surface. The waveguide cross-section, taken by a plane perpendicular to a waveguide edge along elongated direction, has substantially a trapezoidal shape in which a longer side of opposed parallel sides is an edge of the cross-section on the NF-optical device side. This configuration enables a coupled portion of the NF-optical device which is coupled with the light to be placed in the effective distribution range of the light seeping from the waveguide. Consequently, there can be realized a sufficiently strong coupling between the light seeping from the waveguide and the NF-optical device.
摘要翻译：提供了一种热辅助磁记录头，其包括具有改善的光利用效率的近场光产生（NFL生成）光学系统。头包括磁极，传播用于激发表面等离子体激元的光的波导和被配置为从其邻近磁极端表面的端表面发射NF光的NF光学装置。波导横截面由沿着细长方向垂直于波导边缘的平面截取，具有基本上梯形的形状，其中相对的平行边的较长边是NF光学器件侧的横截面的边缘。该配置使得能够将与光耦合的NF光学器件的耦合部分放置在从波导管渗出的光的有效分布范围内。因此，可以实现从波导管和NF光学器件渗出的光之间的足够强的耦合。

7. 发明申请

US20110116349A1 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD COMPRISING NEAR-FIELD OPTICAL DEVICE WITH PROPAGATION EDGE 有权
标题翻译：包含传播边缘的近场光学装置的热辅助磁记录头
公开(公告)号：US20110116349A1
公开(公告)日：2011-05-19
申请号：US12617853
申请日：2009-11-13
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 , G11B5/1278 , G11B5/6005 , G11B5/6088 , G11B2005/0005 , 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: a contact-to-waveguide surface having a contact to the waveguide; and a propagation edge provided on the side opposite to the contact-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 is reliably 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光学器件包括：具有与波导的接触的接触到波导表面; 以及设置在与所述接触到所述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所述表面等离子体。在该光学系统中，NFL产生端面的产生NF光的点可靠地位于与波导相反的一侧。

8. 发明申请

US20110205860A1 HEAT-ASSISTED MAGNETIC RECORDING HEAD INCLUDING PLASMON GENERATOR 有权
标题翻译：热辅助磁记录头，包括等离子发生器
公开(公告)号：US20110205860A1
公开(公告)日：2011-08-25
申请号：US12710129
申请日：2010-02-22
申请人： Tsutomu CHOU , Eiji KOMURA , Koji SHIMAZAWA , Kosuke TANAKA , Daisuke MIYAUCHI
发明人： Tsutomu CHOU , Eiji KOMURA , Koji SHIMAZAWA , Kosuke TANAKA , Daisuke MIYAUCHI
IPC分类号： G11B11/00 , G11B5/02
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A plasmon generator has an outer surface including a surface plasmon exciting surface, and has a near-field light generating part located in a medium facing surface. The surface plasmon exciting surface is a flat surface that faces an evanescent light generating surface of a waveguide with a predetermined distance therebetween. The surface plasmon exciting surface includes a width changing portion. The width of the width changing portion in a direction parallel to the medium facing surface and the evanescent light generating surface decreases with decreasing distance to the medium facing surface. A magnetic pole is located at such a position that the plasmon generator is interposed between the magnetic pole and the waveguide. The outer surface of the plasmon generator includes a pole contact surface that is in contact with the magnetic pole.
摘要翻译：等离子体发生器具有包括表面等离子体激元表面的外表面，并且具有位于介质面对表面中的近场光产生部。表面等离子体激元表面是面对波导的ev逝光产生表面的平坦表面，其间具有预定的距离。表面等离子体激元表面包括宽度改变部分。宽度改变部分在与面向介质的表面和ev逝光产生表面平行的方向上的宽度随着与面向介质的表面的距离的减小而减小。磁极位于这样的位置，等离子体发生器插入在磁极和波导之间。等离子体发生器的外表面包括与磁极接触的极接触表面。

9. 发明申请

US20090207534A1 MAGNETO-RESISTANCE EFFECT ELEMENT INCLUDING STACK WITH DUAL FREE LAYER AND MAGNETIZED SHIELD ELECTRODE LAYERS 审中-公开
标题翻译：磁电阻效应元件，包括具有双层和磁性屏蔽电极层的堆叠
公开(公告)号：US20090207534A1
公开(公告)日：2009-08-20
申请号：US12033292
申请日：2008-02-19
申请人： Daisuke MIYAUCHI , Koji SHIMAZAWA , Tsutomu CHOU , Takahiko MACHITA
发明人： Daisuke MIYAUCHI , Koji SHIMAZAWA , Tsutomu CHOU , Takahiko MACHITA
IPC分类号： G11B5/39 , G11B5/012 , G01R33/09 , G11B5/00
CPC分类号： G01R33/093 , B82Y25/00 , G11B5/3912 , G11B5/3932 , G11B5/398 , H01F10/3263 , H01L43/08
摘要： A magneto-resistance effect element comprises; a magneto-resistance effect stack including an upper magnetic layer and a lower magnetic layer in which respective magnetization directions change in accordance with an external magnetic field, a non-magnetic intermediate layer sandwiched between the upper and lower magnetic layers, an upper gap adjustment layer and a lower gap adjustment layer provided at respective ends in the direction of stacking the magneto-resistance effect stack, an upper exchange coupling transmission layer configured to generate exchange coupling between the upper magnetic layer and the upper gap adjustment layer, and a lower exchange coupling transmission layer configured to generate exchange coupling between the lower magnetic layer and the lower gap adjustment layer; an upper shield electrode layer and a lower shield electrode layer which are provided to sandwich the magneto-resistance effect stack therebetween in the direction of stacking the magneto-resistance effect stack, wherein the upper shield electrode layer and the lower shield electrode layer supply sense current in the direction of stacking, and magnetically shield the magneto-resistance effect stack; and a bias magnetic layer which is provided on a surface of the magneto-resistance effect stack opposite to an air bearing surface, and wherein the bias magnetic layer applies a bias magnetic field to the upper and lower magnetic layers in a direction perpendicular to the air bearing surface, wherein the upper and lower shield electrode layers are each magnetized in a track width direction by a magnetization controller, and the upper and lower gap adjustment layers are composed of a material having a higher magnetic permeability and a lower saturation magnetic flux density than the upper and lower shield electrode layers respectively.
摘要翻译：磁阻效应元件包括：包括上磁化层和下磁性层的磁电阻效应堆，其中磁化方向各自根据外部磁场而变化，夹在上下磁层之间的非磁性中间层，上间隙调整层以及设置在层叠磁阻效应堆叠方向的各端的下间隙调整层，被配置为产生上磁性层和上间隙调整层之间的交换耦合的上交换耦合传输层，以及下交换耦合传输层，其被配置为在所述下磁性层和所述下间隙调整层之间产生交换耦合; 上屏蔽电极层和下屏蔽电极层，其被设置成在堆叠磁阻效应堆叠的方向上夹着磁阻效应堆叠，其中上屏蔽电极层和下屏蔽电极层提供感测电流在层叠方向上磁屏蔽磁阻效应堆; 以及设置在与空气轴承表面相对的磁阻效应堆的表面上的偏置磁性层，并且其中偏置磁性层在与空气垂直的方向上向上磁层和下磁层施加偏置磁场其中上下屏蔽电极层通过磁化控制器在磁道宽度方向上磁化，上下间隙调整层由具有较高磁导率和较低饱和磁通密度的材料构成，上，下屏蔽电极层。

10. 发明申请

US20120176874A1 LIGHT SOURCE UNIT INCLUDING A PHOTODETECTOR, AND THERMALLY-ASSISTED MAGNETIC RECORDING HEAD 有权
标题翻译：光源单元，包括一个光电转换器和一个辅助磁记录头
公开(公告)号：US20120176874A1
公开(公告)日：2012-07-12
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： G11B13/04 , H01L31/0248 , G11B13/08 , G01D5/32
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。

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