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1. 发明申请

US20050117386A1 Magnetoresistive element, magnetic memory cell, and magnetic memory device 有权
标题翻译：磁阻元件，磁存储单元和磁存储器件
公开(公告)号：US20050117386A1
公开(公告)日：2005-06-02
申请号：US10967297
申请日：2004-10-19
申请人： Akifumi Kamijima , Koji Shimazawa , Hitoshi Hatate
发明人： Akifumi Kamijima , Koji Shimazawa , Hitoshi Hatate
IPC分类号： G11C11/15 , G11C11/16 , H01L21/8246 , H01L27/105 , H01L43/08 , G11C11/14
CPC分类号： G11C11/16
摘要： The present invention provides a magnetic memory device capable of stably performing information writing operation by efficiently using a magnetic field generated by current flowing in write lines and having a high degree of flexibility in designing. A magneto-resistive element has: a magnetic yoke disposed annularly in a circumferential direction so as to surround a write word line and a write bit line, and having a pair of open ends facing each other while sandwiching a gap provided in a part in the circumferential direction; and a stacked body including a second magnetic layer of which magnetization direction changes according to an external magnetic field and a pair of end faces. The stacked body is disposed in the gap so that each of the pair of end faces and each of the pair of open ends face each other. With the configuration, magnetization of the second magnetic layer can be efficiently inverted and, as compared with the case where the stacked body and the magnetic yoke are in contact with each other, the material of the stacked body can be selected from a wider range and the magnetic and electric performances of the stacked body can be sufficiently displayed.
摘要翻译：本发明提供一种能够通过有效地利用在写入线中流动的电流产生的磁场并且在设计中具有高度的灵活性来稳定执行信息写入操作的磁存储器件。磁阻元件具有：环绕圆周方向设置的磁轭，以便围绕写入字线和写入位线，并且具有一对彼此相对的开口端，同时将设置在其中的部分中的间隙夹在圆周方向以及包括其磁化方向根据外部磁场而变化的第二磁性层和一对端面的层叠体。叠层体设置在间隙中，使得一对端面和一对开口端中的每一个彼此面对。利用该结构，可以有效地反转第二磁性层的磁化，并且与堆叠体和磁轭相互接触的情况相比，层叠体的材料可以从更宽的范围内选择，可以充分地显示堆叠体的磁性和电气性能。

2. 发明授权

US07403358B2 Thin film magnetic head, magnetic head device, magnetic recording/reproducing device and method for fabricating a thin film magnetic head 失效
标题翻译：薄膜磁头，磁头装置，磁记录/重放装置以及用于制造薄膜磁头的方法
公开(公告)号：US07403358B2
公开(公告)日：2008-07-22
申请号：US11227126
申请日：2005-09-16
申请人： Koichi Terunuma , Koji Shimazawa , Akifumi Kamijima
发明人： Koichi Terunuma , Koji Shimazawa , Akifumi Kamijima
IPC分类号： G11B5/39 , G11B5/127
CPC分类号： G11B5/3903 , G11B5/3932 , G11B5/3967 , Y10T29/49046
摘要： A magnetoresistive effective film responds commensurate with an external magnetic field. Magnetic domain-controlling films apply a perpendicular biasing magnetic field to the magnetoresistive effective film. The forefronts of first electrode films constituting a pair of electrode films are overlaid on the magnetoresistive effective film, and the forefront surfaces of the first electrode films are risen at an inner angle of θ1. Second electrode films are overlaid on the first electrode films, and the forefront surfaces of the second electrode films are risen at an inner angle of θ2 smaller than the inner angle θ1.
摘要翻译：磁阻有效膜响应与外部磁场相称。磁畴控制膜对磁阻有效膜施加垂直偏置磁场。构成一对电极膜的第一电极膜的前面覆盖在磁阻有效膜上，并且第一电极膜的最前面以内角θ1升高。第二电极膜覆盖在第一电极膜上，并且第二电极膜的最前端表面以小于内角θ1的内角θ2升高。

3. 发明授权

US08094523B2 Heat-assisted magnetic recording medium and magnetic recording apparatus with the medium 有权
标题翻译：热辅助磁记录介质和带有介质的磁记录装置
公开(公告)号：US08094523B2
公开(公告)日：2012-01-10
申请号：US12234250
申请日：2008-09-19
申请人： Akifumi Kamijima , Koji Shimazawa
发明人： Akifumi Kamijima , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/02 , G11B5/314 , G11B7/1387 , G11B11/10536 , G11B11/1058 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a magnetic recording medium that generates near-field light within itself and enables favorable heat-assisted magnetic recording with this near-field light. The medium comprises: a magnetic recording layer; and an optically changeable layer formed on the opposite side to a substrate relative to the magnetic recording layer, the optically changeable layer being made transparent or a refractive index of the layer being changed when irradiated by light with an intensity not less than a predetermined intensity. By the irradiation, a minute opening or a refractive-index-changed area is formed within the irradiated portion on the optically changeable layer. The light irradiation onto the minute opening or the refractive-index-changed area enables near-field light to be generated, which heats a portion of the magnetic recording layer. Thus, the anisotropic field of the portion is lowered to a writable value, which enables heat-assisted magnetic recording by applying write field.
摘要翻译：本发明提供一种能够在其内部产生近场光的磁记录介质，能够利用该近场光进行良好的热辅助磁记录。介质包括：磁记录层; 以及相对于磁记录层形成在与基板相反的一侧上的光学可变层，所述光学可变层是透明的，或者当以不小于预定强度的强度的光照射时，该层的折射率被改变。通过照射，在光学变化层的照射部内形成微小的开口部或折射率变化区域。在微小开口或折射率变化区域上的光照射使得能够产生近场光，这加热了磁记录层的一部分。因此，该部分的各向异性场降低到可写入值，这使得能够通过施加写入场来进行热辅助磁记录。

4. 发明申请

US20100074062A1 HEAT-ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING APPARATUS WITH THE MEDIUM 有权
标题翻译：热辅助磁记录介质和磁记录装置
公开(公告)号：US20100074062A1
公开(公告)日：2010-03-25
申请号：US12234250
申请日：2008-09-19
申请人： Akifumi Kamijima , Koji Shimazawa
发明人： Akifumi Kamijima , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/02 , G11B5/314 , G11B7/1387 , G11B11/10536 , G11B11/1058 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a magnetic recording medium that generates near-field light within itself and enables favorable heat-assisted magnetic recording with this near-field light. The medium comprises: a magnetic recording layer; and an optically changeable layer formed on the opposite side to a substrate relative to the magnetic recording layer, the optically changeable layer being made transparent or a refractive index of the layer being changed when irradiated by light with an intensity not less than a predetermined intensity. By the irradiation, a minute opening or a refractive-index-changed area is formed within the irradiated portion on the optically changeable layer. The light irradiation onto the minute opening or the refractive-index-changed area enables near-field light to be generated, which heats a portion of the magnetic recording layer. Thus, the anisotropic field of the portion is lowered to a writable value, which enables heat-assisted magnetic recording by applying write field.
摘要翻译：本发明提供一种能够在其内部产生近场光的磁记录介质，能够利用该近场光进行良好的热辅助磁记录。介质包括：磁记录层; 以及相对于磁记录层形成在与基板相反的一侧上的光学可变层，所述光学可变层是透明的，或者当以不小于预定强度的强度的光照射时，该层的折射率被改变。通过照射，在光学变化层的照射部内形成微小的开口部或折射率变化区域。在微小开口或折射率变化区域上的光照射使得能够产生近场光，这加热了磁记录层的一部分。因此，该部分的各向异性场降低到可写入值，这使得能够通过施加写入场来进行热辅助磁记录。

5. 发明申请

US20060007604A1 Thin film magnetic head, magnetic head device, magnetic recording/reproducing device and method for fabricating a thin film magnetic head 失效
公开(公告)号：US20060007604A1
公开(公告)日：2006-01-12
申请号：US11227126
申请日：2005-09-16
申请人： Koichi Terunuma , Koji Shimazawa , Akifumi Kamijima
发明人： Koichi Terunuma , Koji Shimazawa , Akifumi Kamijima
IPC分类号： G11B5/127 , G11B5/33
CPC分类号： G11B5/3903 , G11B5/3932 , G11B5/3967 , Y10T29/49046
摘要： A magnetoresistive effective film responds commensurate with an external magnetic field. Magnetic domain-controlling films apply a perpendicular biasing magnetic field to the magnetoresistive effective film. The forefronts of first electrode films constituting a pair of electrode films are overlaid on the magnetoresistive effective film, and the forefront surfaces of the first electrode films are risen at an inner angle of θ1. Second electrode films are overlaid on the first electrode films, and the forefront surfaces of the second electrode films are risen at an inner angle of θ2 smaller than the inner angle θ1.

6. 发明授权

US08116034B2 Thermally assisted magnetic head having main pole arranged between near-field light-generating portions and manufacturing method of same 有权
标题翻译：具有设置在近场发光部之间的主极的热辅助磁头及其制造方法
公开(公告)号：US08116034B2
公开(公告)日：2012-02-14
申请号：US12204452
申请日：2008-09-04
申请人： Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Seiichi Takayama , Hitoshi Hatate
发明人： Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Seiichi Takayama , Hitoshi Hatate
IPC分类号： G11B5/02 , G11B5/127
CPC分类号： G11B5/314 , G11B2005/0021
摘要： When first and second near-field light-generating portions are irradiated with laser light or other energy rays, near-field light is generated at the tips of both the near-field light-generating portions. By means of the near-field light thus generated, a magnetic recording medium opposing the medium-opposing surface is heated, and the coercivity of the magnetic recording medium is lowered. Since at least a portion of the main magnetic pole is positioned within the spot region including the region between the first and second near-field light-generating portions, the tips of both the near-field light-generating portions and the main magnetic pole can be brought extremely close together, and high-density recording can be performed.
摘要翻译：当用激光或其他能量射线照射第一和第二近场光产生部分时，在近场光产生部分的尖端处产生近场光。通过这样产生的近场光，加热与介质相对表面相对的磁记录介质，并降低磁记录介质的矫顽力。由于主磁极的至少一部分位于包括第一和第二近场发光部之间的区域的光点区域内，因此近场发光部和主磁极两者的尖端被非常靠近在一起，并且可以执行高密度记录。

7. 发明申请

US20090168220A1 THERMALLY ASSISTED MAGNETIC HEAD AND MANUFACTURING METHOD OF SAME 有权
标题翻译：热辅助磁头及其制造方法
公开(公告)号：US20090168220A1
公开(公告)日：2009-07-02
申请号：US12204452
申请日：2008-09-04
申请人： Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Seiichi Takayama , Hitoshi Hatate
发明人： Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Seiichi Takayama , Hitoshi Hatate
IPC分类号： G11B5/02 , B44C1/22
CPC分类号： G11B5/314 , G11B2005/0021
摘要： When first and second near-field light-generating portions are irradiated with laser light or other energy rays, near-field light is generated at the tips of both the near-field light-generating portions. By means of the near-field light thus generated, a magnetic recording medium opposing the medium-opposing surface is heated, and the coercivity of the magnetic recording medium is lowered. Since at least a portion of the main magnetic pole is positioned within the spot region including the region between the first and second near-field light-generating portions, the tips of both the near-field light-generating portions and the main magnetic pole can be brought extremely close together, and high-density recording can be performed.
摘要翻译：当用激光或其他能量射线照射第一和第二近场光产生部分时，在近场光产生部分的尖端处产生近场光。通过这样产生的近场光，加热与介质相对表面相对的磁记录介质，并降低磁记录介质的矫顽力。由于主磁极的至少一部分位于包括第一和第二近场发光部之间的区域的光点区域内，因此近场发光部和主磁极两者的尖端被非常靠近在一起，并且可以执行高密度记录。

8. 发明授权

US08427927B1 Thermally-assisted magnetic recording head, head gimbals assembly, head arm assembly, and magnetic disk unit 有权
标题翻译：热辅助磁记录头，头架万向节组件，头臂组件和磁盘单元
公开(公告)号：US08427927B1
公开(公告)日：2013-04-23
申请号：US13370982
申请日：2012-02-10
申请人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi
发明人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0021
摘要： The thermally-assisted magnetic recording head includes: a magnetic pole; a waveguide allowing a transverse-electric (TE) wave oscillating in a cross-track direction to propagate toward an air bearing surface; and a plasmon generator having a tip portion near the air bearing surface, the tip portion being provided to overlap, in a down-track direction, with both the magnetic pole and the waveguide, and having a quadrangular cross-section substantially parallel to the air bearing surface.
摘要翻译：热辅助磁记录头包括：磁极; 允许在横向轨道方向上振荡的横向电（TE）波向空气轴承表面传播的波导; 以及等离子体发生器，其具有靠近所述空气支承表面的尖端部分，所述尖端部分被设置为沿着磁道和所述波导两者的向下轨道方向重叠，并且具有基本上平行于所述空气的四边形横截面承载面。

9. 发明授权

US08374061B2 Thermally-assisted magnetic recording head capable of reducing the number of binding wires 有权
标题翻译：热辅助磁记录头，能够减少装订线的数量
公开(公告)号：US08374061B2
公开(公告)日：2013-02-12
申请号：US12190381
申请日：2008-08-12
申请人： Kosuke Tanaka , Koji Shimazawa , Yasuhiro Ito
发明人： Kosuke Tanaka , Koji Shimazawa , Yasuhiro Ito
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/02 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： A slider has a slider substrate, an electromagnetic transducer, a waveguide for receiving light from a surface on the side opposite from a medium-opposing surface and guiding the light to the medium-opposing surface side, and a device electrode electrically connected to the electromagnetic transducer. A light source unit includes a light source supporting substrate, a light source, and a lead extending from the slider side to the side opposite from the slider and having both end parts exposed at a surface of the light source unit. The device electrode of the slider is exposed at the surface of the slider on the side opposite from the medium-opposing surface without being covered with the light source unit. An end part on the slider side of the lead of the light source unit is soldered to the device electrode of the slider.
摘要翻译：滑块具有滑块基板，电磁换能器，用于从与介质相对表面相对的一侧上的表面接收光并将光引导到介质相对表面侧的波导，以及电连接到电磁传感器。光源单元包括光源支撑基板，光源和从滑块侧延伸到与滑块相对的一侧的引线，并且两端部露出在光源单元的表面。滑块的器件电极在与中间相对表面相对的一侧的滑块的表面处被暴露，而不被光源单元覆盖。将光源单元的引线的滑块侧的端部焊接到滑块的器件电极。

10. 发明授权

US08363515B1 Thermally-assisted magnetic recording head, head gimbals assembly, head arm assembly, and magnetic disk unit 有权
标题翻译：热辅助磁记录头，头架万向节组件，头臂组件和磁盘单元
公开(公告)号：US08363515B1
公开(公告)日：2013-01-29
申请号：US13397041
申请日：2012-02-15
申请人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi , Kosuke Tanaka
发明人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi , Kosuke Tanaka
IPC分类号： G11B11/00
CPC分类号： G11B5/6088 , G11B5/314 , G11B2005/0021
摘要： The thermally-assisted magnetic recording head includes: a magnetic pole; a waveguide propagating light in a first direction, the first direction intersecting with an air bearing surface; a plasmon generator having a base and a projection, the base having a surface, and the projection having a top, standing partially on the surface of the base and extending in the first direction. The plasmon generator has a first portion and a second portion, and the first portion and the second portion are provided in this order from the air bearing surface in a direction away from the air bearing surface. Herein, the top of the projection and the surface of the base in the first portion define a first step, and the top of the projection and the surface of the base in the second portion define a second step. The first step is larger than the second step.
摘要翻译：热辅助磁记录头包括：磁极; 波导在第一方向传播光，所述第一方向与空气轴承表面相交; 具有基部和突起的等离子体发生器，所述基部具有表面，并且所述突起具有顶部，部分地位于所述基部的所述表面上并沿所述第一方向延伸。等离子体发生器具有第一部分和第二部分，并且第一部分和第二部分沿着远离空气支承表面的方向从空气轴承表面依次设置。这里，突起的顶部和第一部分中的基部的表面限定第一步骤，并且突起的顶部和第二部分中的基部的表面限定第二步骤。第一步大于第二步。

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