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91. 发明申请

US20130215725A1 THERMALLY ASSISTED MAGNETIC HEAD, MAGNETIC HEAD DEVICE AND MAGNETIC RECORDING/REPRODUCING APPARATUS INCLUDING A RECORDING ELEMENT AND A NEAR-FIELD LIGHT GENERATING ELEMENT. 有权
标题翻译：热辅助磁头，磁头装置和磁记录/再现装置，包括记录元件和近场光产生元件。
公开(公告)号：US20130215725A1
公开(公告)日：2013-08-22
申请号：US13402318
申请日：2012-02-22
申请人： Kei HIRATA , Kosuke Takana , Tsutomu Chou , Susumu Aoki , Makoto Isogai , Tetsuya Roppongi
发明人： Kei HIRATA , Kosuke Takana , Tsutomu Chou , Susumu Aoki , Makoto Isogai , Tetsuya Roppongi
IPC分类号： G11B13/04 , G11B5/115 , G11B7/1387
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。

92. 发明授权

US08270791B2 Optical waveguide and thermally-assisted 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：US08270791B2
公开(公告)日：2012-09-18
申请号：US12898063
申请日：2010-10-05
申请人： Eiji Komura , Tsutomu Chou
发明人： Eiji Komura , Tsutomu Chou
IPC分类号： G11B7/135 , G02B6/34 , G02B6/42
CPC分类号： G02B6/1226 , B82Y20/00 , G02B6/1228 , G02B6/4214 , G11B5/3116 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： An optical waveguide of the invention includes a core that is a waveguide through which light propagates; and a cladding that surrounds the core. The core has a plate shape and includes a wide core base part onto which the light is incident, a taper part that is connected to the core base part and of which a width is gradually tapered along a propagation direction, and a narrow front end core part that is connected to the taper part and that extends along the propagation direction. A grating is provided on one of planar surfaces of the wide core base part, the grating is formed by engraving a number of concave grooves having a rectangular cross section on the planar surface along a width direction thereof, the grating is formed to be optically coupled with laser light that is incident perpendicularly onto the grating formation surface, a frequency (grating pitch: pitch of the concave grooves) of the grating is smaller than a wavelength (defined as a wavelength in the cladding) of the perpendicularly incident laser light, and a groove depth H1 of the grating is formed with respect to a thickness H2 of the core base part so that a relationship H1=(0.33 to 0.67)×H2 is satisfied.
摘要翻译：本发明的光波导包括：芯，其是光传播的波导; 以及围绕芯的包层。芯具有板状，并且包括光入射的宽核心基部，与芯基部连接并且宽度沿着传播方向逐渐变细的锥形部，并且窄前端芯连接到锥形部分并且沿着传播方向延伸的部分。光栅设置在宽核心基部的一个平面表面上，光栅通过沿平面的宽度方向雕刻多个具有矩形横截面的凹槽而形成，光栅形成为光耦合利用垂直于光栅形成面入射的激光，光栅的频率（光栅间距：凹槽的间距）小于垂直入射的激光的波长（被定义为包层的波长）），并且相对于芯基部的厚度H2形成光栅的槽深H1，使得满足关系H1 =（0.33〜0.67）×H2。

93. 发明授权

US08223596B2 Thermally-assisted magnetic recording head with plane-emission type light source 有权
标题翻译：具有平面发射型光源的热辅助磁记录头
公开(公告)号：US08223596B2
公开(公告)日：2012-07-17
申请号：US12581385
申请日：2009-10-19
申请人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Seiichi Takayama
发明人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Seiichi Takayama
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head includes a surface-emitting type light source for emitting substantially collimated beam, a first diffraction optical element for focusing the substantially collimated beam emitted from the surface-emitting type light source, a second diffraction optical element for collimating the light beam focused by the first diffraction optical element, a waveguide integrally formed with the second diffraction optical element and made of the material as that of second diffraction optical element, the light beam collimated by the second diffraction optical element being incident to the waveguide, an optical-path direction conversion element for converting a direction of an optical path of the incident light beam to a propagation direction of the waveguide, the propagation direction being toward an opposed-to-medium surface, and a magnetic pole for generating write field from its end face on the opposed-to-medium surface side.
摘要翻译：热辅助磁记录头包括用于发射基本上准直的光束的表面发射型光源，用于聚焦从表面发射型光源发射的基本上准直的光束的第一衍射光学元件，用于准直由第一衍射光学元件聚焦的光束，与第二衍射光学元件整体形成并由第二衍射光学元件的材料制成的波导，由第二衍射光学元件准直的光束入射到波导，光路方向转换元件，用于将入射光束的光路的方向转换为波导的传播方向，传播方向朝向相对中间的表面;以及用于从其产生写入场的磁极在相对中的表面侧上的端面。

94. 发明申请

US20120120781A1 Thermally-Assisted Head Including Surface-Plasmon Resonant Optical System 有权
标题翻译：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。

95. 发明授权

US08170389B1 Optical waveguide, and thermally-assisted magnetic recording head including the same 有权
标题翻译：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。

96. 发明授权

US07957108B2 Magnetoresistive element having spacer layer that includes two layered regions composed of oxide semiconductor and nonmagnetic conductor phase sandwiched therebetween 有权
标题翻译：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。

97. 发明授权

US06310837B1 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US06310837B1
公开(公告)日：2001-10-30
申请号：US09170083
申请日：1998-10-13
申请人： Tsutomu Chou , Masao Shigeta , Masahiro Karatsu , Mari Fujii , Chikara Ishizaka , Katsumi Saito , Katsuhiko Wakayama , Shohei Mimura , Masahiro Ito
发明人： Tsutomu Chou , Masao Shigeta , Masahiro Karatsu , Mari Fujii , Chikara Ishizaka , Katsumi Saito , Katsuhiko Wakayama , Shohei Mimura , Masahiro Ito
IPC分类号： G11B566
CPC分类号： G06K19/06196 , Y10T428/2982
摘要： The invention is a magnetic recording medium which is effectively protected against forgery by the alteration of recorded data, and a method for carrying out writing and reading on this magnetic recording medium. The magnetic recording medium of the invention comprises a recording material composed of a crystalline alloy containing Fe and Al . In the recoding material, the total amount of Fe and Al is at least 90 at % and the atomic ratio Al/(Fe+Al) ranges from 0.30 to 0.45. The recording material changes from a disordered phase to an ordered phase by heating. The recording material has a saturation magnetization of at least 45 emu/g prior to heating and lowers its saturation magnetization by at least 35 emu/g upon heating. Dark regions are observable in a bright-field image of the recording material by transmission electron microscopy, the dark regions accounting for 15-60% of the recording material in areal ratio and having a maximum breadth of 10-200 nm.
摘要翻译：本发明是通过改变记录数据有效地防止伪造的磁记录介质，以及用于在该磁记录介质上执行写和读的方法。本发明的磁记录介质包括由含有Fe和Al的结晶合金构成的记录材料。在记录材料中，Fe和Al的总量为90原子％以上，原子比Al /（Fe + Al）为0.30〜0.45。记录材料通过加热从无序相变为有序相。记录材料在加热之前具有至少45emu / g的饱和磁化强度，并且在加热时将其饱和磁化降低至少35emu / g。通过透射电子显微镜在记录材料的明场图像中可以观察到暗区域，黑色区域占记录材料的面积比率的15-60％，最大宽度为10-200nm。

98. 发明授权

US08374063B2 Heat-assisted magnetic write head, head gimbals assembly, head arm assembly, and magnetic disk device 有权
标题翻译：热辅助写磁头，头架万向节组件，头臂组件和磁盘设备
公开(公告)号：US08374063B2
公开(公告)日：2013-02-12
申请号：US13029555
申请日：2011-02-17
申请人： Kosuke Tanaka , Tsutomu Chou , Eiji Komura , Takahiko Izawa
发明人： Kosuke Tanaka , Tsutomu Chou , Eiji Komura , Takahiko Izawa
IPC分类号： G11B11/00
CPC分类号： G11B5/6088 , G11B5/314 , G11B2005/0021
摘要： A heat-assisted magnetic write head includes: a magnetic pole having an end surface exposed to an air bearing surface; a waveguide extending toward the air bearing surface to propagate light; 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; and a clad provided to surround both the waveguide and the plasmon generator collectively, the clad having a refractive index lower than that of the waveguide, and exhibiting a thermal conductivity higher than that of the waveguide. The clad may be provided to collectively surround the magnetic pole, as well.
摘要翻译：一种热辅助磁写头包括：具有暴露于空气轴承表面的端面的磁极; 波导向空气轴承表面延伸以传播光; 基于通过波导传播的光，设置在磁极和波导之间并产生来自空气轴承表面的近场光的等离子体激元发生器; 以及包围所述波导和所述等离子体发生器两者的集合体，所述包层的折射率低于所述波导的折射率，并且具有高于所述波导的导热率。也可以提供包层以集中地围绕磁极。

99. 发明授权

US08077558B1 Thermally-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体发生器
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。

100. 发明申请

US20110058272A1 Thermally-Assisted Magnetic Recording Head Comprising Near-Field Light Generator 有权
标题翻译：包括近场光发生器的热辅助磁记录头
公开(公告)号：US20110058272A1
公开(公告)日：2011-03-10
申请号：US12557078
申请日：2009-09-10
申请人： Daisuke Miyauchi , Tsutomu Chou , Kosuke Tanaka , Susumu Aoki , Tetsuya Roppongi , Katsuki Kurihara
发明人： Daisuke Miyauchi , Tsutomu Chou , Kosuke Tanaka , Susumu Aoki , Tetsuya Roppongi , Katsuki Kurihara
IPC分类号： G11B5/02
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a thermally-assisted magnetic recording head capable of setting the near-field light (NFL-) emission point to be sufficiently close to the write-field-generating portion. The head comprises a magnetic pole, a waveguide propagating light, and a NFL-generator coupled with the light in surface plasmon mode. The NFL-generator comprises a propagation edge extending to the NFL-generating end surface, at least a portion of the propagation edge being opposed to the waveguide with a distance, and the magnetic pole has a surface contact with a surface portion of the NFL-generator including no propagation edge. Therefore, the distance between the magnetic-pole end surface and the NFL-generating end surface becomes zero. The propagation edge is not contacted with the magnetic pole. Accordingly, the surface plasmon can propagate along on the propagation edge without being absorbed by the pole. Thus, the NFL-emission point is ensured to be at the end point of the propagation edge.
摘要翻译：提供了一种能够将近场光（NFL-）发射点设定为足够靠近写入场产生部分的热辅助磁记录头。磁头包括磁极，波导传播光和与表面等离子体激发光模式耦合的NFL发生器。 NFL发生器包括延伸到NFL生成端面的传播边缘，传播边缘的至少一部分与波导相距一定距离，并且磁极与NFL-发生端面的表面部分具有表面接触，发生器不包括传播边。因此，磁极端面与产生NFL的端面之间的距离为零。传播边缘不与磁极接触。因此，表面等离子体激元可以沿着传播边缘传播而不被极吸收。因此，确保NFL发射点处于传播边缘的终点。

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