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    Thermally-Assisted Head Including Surface-Plasmon Resonant Optical System
    42.
    发明申请
    Thermally-Assisted Head Including Surface-Plasmon Resonant Optical System 有权
    热辅助头包括表面等离子体共振光学系统

    公开(公告)号：US20120120781A1

    公开(公告)日：2012-05-17

    申请号：US12946196

    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 ,  F21V8/00

    CPC分类号： G11B5/314 ,  B82Y20/00 ,  G02B6/1226 ,  G11B5/105 ,  G11B5/3116 ,  G11B5/6088 ,  G11B2005/0021

    摘要： Provided is a surface plasmon resonating optical system emitting near-field light (NF-light) with a higher light density. The system comprises: a waveguide through which a light for exciting surface plasmon propagates; a plasmon generator that couples with the light in a surface plasmon mode and emits NF-light from its NF-light generating end surface; and a resonator mirror that reflects the excited surface plasmon, provided on the side of the plasmon generator opposite to the NF-light generating end surface. In the system, the excited surface plasmon can be amplified by using a resonator structure while reducing the length of the plasmon generator to reduce absorption of surface plasmon and prevent overheating of the plasmon generator.

    摘要翻译： 提供了具有较高光密度的发射近场光（NF-光）的表面等离子体共振光学系统。 该系统包括：用于激发表面等离子体激元的光传播的波导; 等离子体发生器，其以表面等离子体模式耦合光并从其NF光产生端表面发射NF光; 以及反射激发的表面等离子体的谐振镜，设置在等离子体发生器的与NF发光端面相对的一侧。 在该系统中，可以通过使用谐振器结构来放大激发的表面等离子体激元，同时减少等离子体发生器的长度以减少表面等离子体的吸收并防止等离子体发生器的过热。

    Optical waveguide, and thermally-assisted magnetic recording head including the same
    43.
    发明授权
    Optical waveguide, and thermally-assisted magnetic recording head including the same 有权
    光波导和包括其的热辅助磁记录头

    公开(公告)号：US08170389B1

    公开(公告)日：2012-05-01

    申请号：US13016085

    申请日：2011-01-28

    申请人： Eiji Komura ,  Tsutomu Chou

    发明人： Eiji Komura ,  Tsutomu Chou

    IPC分类号： G02B6/10

    CPC分类号： G02B6/1228 ,  B82Y20/00 ,  G02B6/1226 ,  G02B6/4203 ,  G11B5/314 ,  G11B5/4866 ,  G11B2005/0021

    摘要： An optical waveguide includes a core and a clad. The core includes first to third propagation parts, and a coupling part that couples the first to third propagation parts together. The first propagation part has a first incidence end face on which part of incident light is incident, and a first emission part that emits first propagation light. The second propagation part has a second incidence end face on which another part of the incident light is incident, and a second emission part that emits second propagation light. In the coupling part, a first light wave resulting from the first propagation light and a second light wave resulting from the second propagation light occur, and the first and second light waves interfere with each other to generate third propagation light to be emitted from a third emission part. The third propagation part propagates the third propagation light.

    摘要翻译： 光波导包括芯和包层。 芯部包括第一至第三传播部分，以及将第一至第三传播部分耦合在一起的耦合部分。 第一传播部分具有入射光的一部分入射的第一入射端面和发射第一传播光的第一发射部分。 第二传播部分具有入射光的另一部分入射的第二入射端面和发射第二传播光的第二发射部分。 在耦合部分中，产生由第一传播光产生的第一光波和由第二传播光产生的第二光波，并且第一和第二光波彼此干涉以产生将从第三传播光发射的第三传播光 排放部分。 第三传播部分传播第三传播光。

    THERMALLY ASSISTED MAGNETIC RECORDING HEAD
    44.
    发明申请
    THERMALLY ASSISTED MAGNETIC RECORDING HEAD 有权
    热辅助磁记录头

    公开(公告)号：US20120075967A1

    公开(公告)日：2012-03-29

    申请号：US12892540

    申请日：2010-09-28

    申请人： Tsutomu Chou ,  Eiji Komura ,  Shinji Hara ,  Kosuke Tanaka ,  Daisuke Miyauchi

    发明人： Tsutomu Chou ,  Eiji Komura ,  Shinji Hara ,  Kosuke Tanaka ,  Daisuke Miyauchi

    IPC分类号： G11B11/24

    CPC分类号： G11B5/3116 ,  G02B5/008 ,  G11B5/314 ,  G11B5/3163 ,  G11B2005/0021

    摘要： A thermally assisted magnetic head includes a magnetic pole that generates a writing magnetic field from an air bearing surface (ABS); a waveguide through which light propagates; and a plasmon generator generating near-field light from a near-field light generating end surface by coupling the light thereto in a surface plasmon mode. The magnetic pole includes a convex part protruding in a substantially V-shape along a light propagation direction of the waveguide. The plasmon generator includes a substantially V-shaped part contacting the convex part, and as seen from a side of the ABS, a thickness of the plasmon generator in a direction perpendicular to convex part contacting sides gradually increases from an end in a direction away from the waveguide, the convex part contacting sides being linear sides that form the substantially V-shaped part of the plasmon generator and contacting the convex part.

    摘要翻译： 热辅助磁头包括从空气轴承表面（ABS）产生书写磁场的磁极; 光传播的波导; 以及等离子体发生器，其通过以表面等离子体激发模式将光耦合到其上，从近场光产生端面产生近场光。 磁极包括沿波导的光传播方向大致V形突出的凸部。 等离子体发生器包括接触凸部的大致V形部分，并且从ABS的侧面看，等离子体发生器在与凸部接触的方向垂直的方向上的厚度从远离方向的端部逐渐增加 所述波导，所述凸部接触侧为直线侧，其形成所述等离子体发生器的大致V形部分并接触所述凸部。

    Magnetoresistive element including a pair of free layers coupled to a pair of shield layers
    45.
    发明授权
    Magnetoresistive element including a pair of free layers coupled to a pair of shield layers 有权
    磁阻元件包括耦合到一对屏蔽层的一对自由层

    公开(公告)号：US08049997B2

    公开(公告)日：2011-11-01

    申请号：US12285069

    申请日：2008-09-29

    申请人： Daisuke Miyauchi ,  Yoshihiro Tsuchiya ,  Tsutomu Chou ,  Shinji Hara ,  Takahiko Machita ,  Koji Shimazawa

    发明人： Daisuke Miyauchi ,  Yoshihiro Tsuchiya ,  Tsutomu Chou ,  Shinji Hara ,  Takahiko Machita ,  Koji Shimazawa

    IPC分类号： G11B5/39

    CPC分类号： G11B5/398 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3909 ,  G11B5/3912 ,  G11B5/3932 ,  G11B5/3967 ,  H01F10/3254 ,  H01F10/3272 ,  H01L43/08

    摘要： A first shield portion located below an MR stack includes a first main shield layer, a first antiferromagnetic layer, and a first magnetization controlling layer including a first ferromagnetic layer exchange-coupled to the first antiferromagnetic layer. A second shield portion located on the MR stack includes a second main shield layer, a second antiferromagnetic layer, and a second magnetization controlling layer including a second ferromagnetic layer exchange-coupled to the second antiferromagnetic layer. The MR stack includes two free layers magnetically coupled to the two magnetization controlling layers. Only one of the two magnetization controlling layers includes a third ferromagnetic layer that is antiferromagnetically exchange-coupled to the first or second ferromagnetic layer through a nonmagnetic middle layer. The first shield portion includes an underlayer disposed on the first main shield layer, and the first antiferromagnetic layer is disposed on the underlayer.

    摘要翻译： 位于MR堆叠下方的第一屏蔽部分包括第一主屏蔽层，第一反铁磁层和包括与第一反铁磁层交换耦合的第一铁磁层的第一磁化控制层。 位于MR堆叠上的第二屏蔽部分包括第二主屏蔽层，第二反铁磁层和包括交换耦合到第二反铁磁层的第二铁磁层的第二磁化控制层。 MR堆叠包括磁耦合到两个磁化控制层的两个自由层。 两个磁化控制层中的仅一个包括通过非磁性中间层反铁磁交换耦合到第一或第二铁磁层的第三铁磁层。 第一屏蔽部分包括设置在第一主屏蔽层上的底层，并且第一反铁磁层设置在底层上。

    HEAT-ASSISTED MAGNETIC RECORDING HEAD INCLUDING PLASMON GENERATOR
    46.
    发明申请
    HEAT-ASSISTED MAGNETIC RECORDING HEAD INCLUDING PLASMON GENERATOR 有权
    热辅助磁记录头，包括等离子发生器

    公开(公告)号：US20110228419A1

    公开(公告)日：2011-09-22

    申请号：US12728600

    申请日：2010-03-22

    申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Shinji Hara ,  Eiji Komura

    发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Shinji Hara ,  Eiji Komura

    IPC分类号： G11B5/02

    CPC分类号： G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

    摘要： A plasmon generator has an outer surface including a propagation edge, and has a near-field light generating part lying at an end of the propagation edge and located in a medium facing surface. The propagation edge faces an evanescent light generating surface of a waveguide's core with a predetermined distance therebetween and extends in a direction perpendicular to the medium facing surface. The propagation edge is arc-shaped in a cross section parallel to the medium facing surface. The plasmon generator includes a shape changing portion in which a radius of curvature of the propagation edge in the cross section parallel to the medium facing surface continuously decreases with decreasing distance to the medium facing surface.

    摘要翻译： 等离子体发生器具有包括传播边缘的外表面，并且具有位于传播边缘的末端并位于面向介质的表面中的近场光产生部分。 传播边缘面向波导芯的ev逝光产生表面，其间具有预定距离，并且在垂直于介质面向表面的方向上延伸。 传播边缘在平行于面向介质的表面的横截面中是弧形的。 等离子体发生器包括形状改变部分，其中平面于介质面向表面的横截面中的传播边缘的曲率半径随着到面向介质的表面的距离的减小而连续地减小。

    Magnetoresistive element having spacer layer that includes two layered regions composed of oxide semiconductor and nonmagnetic conductor phase sandwiched therebetween
    47.
    发明授权
    Magnetoresistive element having spacer layer that includes two layered regions composed of oxide semiconductor and nonmagnetic conductor phase sandwiched therebetween 有权
    具有间隔层的磁阻元件包括由氧化物半导体和夹在其间的非磁性导体相组成的两个层状区域

    公开(公告)号：US07957108B2

    公开(公告)日：2011-06-07

    申请号：US11889012

    申请日：2007-08-08

    申请人： Tsutomu Chou ,  Tomohito Mizuno

    发明人： Tsutomu Chou ,  Tomohito Mizuno

    IPC分类号： G11B5/39 ,  H04R31/00

    CPC分类号： G11B5/3929 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B2005/3996 ,  Y10T29/49032

    摘要： An MR element includes a free layer having a direction of magnetization that changes in response to an external magnetic field, a pinned layer having a fixed direction of magnetization, and a spacer layer disposed between these layers. The spacer layer includes a first region, a second region and a third region that are each in the form of a layer and that are arranged in a direction intersecting the plane of each of the foregoing layers. The second region is sandwiched between the first region and the third region. The first region and the third region are each composed of an oxide semiconductor, and the second region includes at least a nonmagnetic conductor phase.

    摘要翻译： MR元件包括具有响应于外部磁场而变化的磁化方向的自由层，具有固定的磁化方向的被钉扎层以及设置在这些层之间的间隔层。 间隔层包括第一区域，第二区域和第三区域，其各自为层的形式，并且沿与每个前述层的平面交叉的方向布置。 第二区域夹在第一区域和第三区域之间。 第一区域和第三区域各自由氧化物半导体构成，第二区域至少包括非磁性导体相。

    MAGNETORESISTIVE DEVICE OF THE CPP TYPE, AND MAGNETIC DISK SYSTEM
    50.
    发明申请
    MAGNETORESISTIVE DEVICE OF THE CPP TYPE, AND MAGNETIC DISK SYSTEM 有权

    公开(公告)号：US20090290264A1

    公开(公告)日：2009-11-26

    申请号：US12126567

    申请日：2008-05-23

    申请人： Toshiyuki Ayukawa ,  Takahiko Machita ,  Daisuke Miyauchi ,  Tsutomu Chou ,  Koji Shimazawa ,  Shinji Hara ,  Tomohito Mizuno ,  Yoshihiro Tsuchiya

    发明人： Toshiyuki Ayukawa ,  Takahiko Machita ,  Daisuke Miyauchi ,  Tsutomu Chou ,  Koji Shimazawa ,  Shinji Hara ,  Tomohito Mizuno ,  Yoshihiro Tsuchiya

    IPC分类号： G11B5/33

    CPC分类号： G11B5/398 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3932

    摘要： The invention provides a magnetoresistive device of the CPP (current perpendicular to plane) structure, comprising a magnetoresistive unit, and a first, substantially soft magnetic shield layer positioned below and a second, substantially soft magnetic shield layer positioned above, which are located and formed such that the magnetoresistive effect is sandwiched between them from above and below, with a sense current applied in the stacking direction. The magnetoresistive unit comprises a nonmagnetic intermediate layer, and a first ferromagnetic layer and a second ferromagnetic layer stacked and formed such that said nonmagnetic intermediate layer is sandwiched between them. At least one of the first shield layer positioned below and the second shield layer positioned above is configured in a framework form having a planar shape (X-Y plane) defined by the width and length directions of the device. The framework has a front frame-constituting portion located on a medium opposite plane side in front and near where the magnetoresistive unit is positioned, and any other frame portion. The any other frame portion partially comprises a combination of a nonmagnetic gap layer with a bias magnetic field-applying layer. The bias magnetic field-applying layer is constructed by repeating the stacking of a multilayer unit at least twice or up to 50 times, wherein the multilayer unit comprises a nonmagnetic underlay layer and a high-coercive material layer. The nonmagnetic gap layer is designed and located such that a magnetic flux given out of the bias magnetic field-applying layer is efficiently sent out to the front frame-constituting portion. The combination of the nonmagnetic gap layer with the bias magnetic field-applying layer forms a closed magnetic path with a magnetic flux going all the way around the framework, and turns the magnetization of the front frame-constituting portion into a single domain. It is thus possible to make the domain control of the shield layers much more stable, achieve remarkable improvements in resistance to an external magnetic field, and make the operation of the device much more reliable.