公开(公告)号：US07940486B2

公开(公告)日：2011-05-10

申请号：US11892882

申请日：2007-08-28

申请人： Koji Shimazawa ,  Kosuke Tanaka ,  Takaaki Domon

发明人： Koji Shimazawa ,  Kosuke Tanaka ,  Takaaki Domon

IPC分类号： G11B11/105 ,  G11B11/10 ,  G11B5/02 ,  G11B7/135 ,  G11B7/125

CPC分类号： G11B5/02 ,  G11B5/314 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A laser diode is fixed to a light source support substrate and a first surface of a slider substrate is fixed to a second surface of the light source support substrate; therefore, the slider substrate and the laser diode are kept in a fixed positional relation. Since the laser diode faces a light entrance face of a core, long-distance propagation of light as in the conventional technology does not occur, and light emitted from a light emitting element is guided well to a medium-facing surface while permitting some mounting error and coupling loss of light. A spot size w of a light intensity distribution along the X-axis in the XY plane including an incident-light centroid position on the light entrance face is set larger than a thickness of the core, whereby variation in incidence efficiency is well suppressed against positional deviation.

摘要翻译： 激光二极管被固定到光源支撑基板上，并且滑块基板的第一表面固定到光源支撑基板的第二表面; 因此，滑块基板和激光二极管保持固定的位置关系。 由于激光二极管面向芯的光入射面，因此不会像现有技术那样发生长距离传播光，并且从发光元件发出的光很好地被引导到面向中间的表面，同时允许一些安装误差 和光耦合损耗。 在包括光入射面上的入射光重心位置的XY平面中沿着X轴的光强度分布的光斑尺寸w被设定为大于芯的厚度，由此良好地抑制了位置上的入射效率的变化 偏差。

公开(公告)号：US07936531B2

公开(公告)日：2011-05-03

申请号：US12267126

申请日：2008-11-07

申请人： Satoshi Tomikawa ,  Seiichi Takayama ,  Koji Shimazawa

发明人： Satoshi Tomikawa ,  Seiichi Takayama ,  Koji Shimazawa

IPC分类号： G11B5/02 ,  G11B11/00

CPC分类号： G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： The thermally assisted magnetic head according to the present invention comprises a medium-facing surface, a main magnetic pole provided on the medium-facing surface, and a plasmon antenna provided on the medium-facing surface, in the vicinity of the main magnetic pole. The shape of the plasmon antenna, as viewed from a direction perpendicular to the medium-facing surface, is a triangle having first, second and third corners, the plasmon antenna being shaped as a flat plate the thickness direction of which is perpendicular to the medium-facing surface. The distance from the first corner to the main magnetic pole is shorter than the distance from the second corner to the main magnetic pole and the distance from the third corner to the main magnetic pole. The second corner and the third corner are rounded.

摘要翻译： 根据本发明的热辅助磁头包括介于中间的表面，设置在介质中的表面上的主磁极和设置在主磁极附近的面向中的表面上的等离子体激元。 等离子体激元天线的形状，从垂直于介质相对表面的方向观察，是具有第一，第二和第三角的三角形，等离子体激元天线成形为平板，其厚度方向垂直于介质 表面。 从第一角到主磁极的距离比从第二角到主磁极的距离以及从第三角到主磁极的距离短。 第二个角落和第三个角落是圆形的。

公开(公告)号：US20110090587A1

公开(公告)日：2011-04-21

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： G11B5/02

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;以及磁极，用于从其产生写入场 在相对中的表面侧上的端面。

公开(公告)号：US07911882B2

公开(公告)日：2011-03-22

申请号：US11604225

申请日：2006-11-27

申请人： Koji Shimazawa ,  Katsumichi Tagami

发明人： Koji Shimazawa ,  Katsumichi Tagami

IPC分类号： G11B7/125 ,  G11B7/135 ,  G11B11/10

CPC分类号： G11B5/314 ,  G11B5/3136 ,  G11B5/3967 ,  G11B5/4866 ,  G11B2005/001 ,  G11B2005/0021

摘要： A thin-film magnetic head that has a configuration in which the element-formed surface and the opposed-to-medium surface are perpendicular to each other, and a light source is sufficiently distanced from the medium surface is provided. The head comprises at least one near-field-light-generating layer for heating a part of a magnetic medium during write operation by generating a near-field light, having a shape tapered toward a head end surface on the opposed-to-medium surface side, and comprising a near-field-light-generating portion having a light-received surface and a tip reaching the head end surface on the opposed-to-medium surface side, and the light-received surface being sloped in respect to the element-formed surface and being provided in a position where an incident light propagating from a head end surface opposite to the opposed-to-medium surface can reach at least a part of the light-received surface.

摘要翻译： 提供具有其中元件形成表面和相对中间表面彼此垂直并且光源足够远离介质表面的构造的薄膜磁头。 头部包括至少一个近场光产生层，用于在写入操作期间通过产生近场光来加热磁性介质的一部分，其具有朝向相对中间表面上的头端表面逐渐变细的形状 并且包括具有光接收表面的近场光产生部分和到达相对 - 介质表面侧上的头端表面的尖端，并且光接收表面相对于元件倾斜 并且设置在从相对于中间相对面的头端面传播的入射光可以到达受光面的至少一部分的位置。

公开(公告)号：US20110038236A1

公开(公告)日：2011-02-17

申请号：US12540752

申请日：2009-08-13

申请人： Tomohito Mizuno ,  Yoshihiro Tsuchiya ,  Koji Shimazawa ,  Tsutomu Chou

发明人： Tomohito Mizuno ,  Yoshihiro Tsuchiya ,  Koji Shimazawa ,  Tsutomu Chou

IPC分类号： G11B11/00 ,  G11B5/02

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

摘要： Provided is a near-field light transducer with a propagation edge in which the generation of defects is suppressed. The transducer is formed of a Ag alloy and comprises an edge, the edge comprising a portion to be coupled with a light in a surface plasmon mode, the edge extending from the portion to a near-field light generating end surface, and the edge being configured to propagate surface plasmon excited by the light. Further, a curvature radius of the rounded edge is set in the range from 6.25 nm to 20 nm. In the edge and its vicinity, the generation of defects such as cracking and chipping is suppressed. Thereby improved are a propagation efficiency of surface plasmon and a light use efficiency of the transducer. The Ag alloy preferably contains at least one element selected from a group of Pd, Au, Cu, Ru, Rh and Ir.

摘要翻译： 提供了具有传播边缘的近场光传感器，其中抑制了缺陷的产生。 传感器由Ag合金形成并且包括边缘，边缘包括要与表面等离子体激元模式的光耦合的部分，边缘从该部分延伸到近场光产生端表面，并且该边缘是 配置为传播由光激发的表面等离子体激元。 此外，圆角边缘的曲率半径设定在6.25nm至20nm的范围内。 在边缘及其附近，抑制诸如破裂和碎裂的缺陷的产生。 从而改进了表面等离子体激元的传播效率和传感器的光利用效率。 Ag合金优选含有选自Pd，Au，Cu，Ru，Rh和Ir中的至少一种元素。

公开(公告)号：US20110026378A1

公开(公告)日：2011-02-03

申请号：US12458954

申请日：2009-07-28

申请人： Koji Shimazawa ,  Tomohito Mizuno ,  Eiji Komura

发明人： Koji Shimazawa ,  Tomohito Mizuno ,  Eiji Komura

IPC分类号： G11B11/00

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

摘要： A heat-assisted magnetic recording head includes a slider, and an edge-emitting laser diode fixed to the slider. The slider includes: a substrate; and an MR element, two reproduction wiring layers, a coil, two recording wiring layers, a magnetic pole, a near-field light generating element, and a waveguide that are stacked above the top surface of the substrate. The two reproduction wiring layers supply a sense current to the MR element. The two recording wiring layers supply a coil current to the coil. The laser diode has an emitting end face including an emission part for emitting laser light, and a bottom surface. The laser diode is arranged so that the bottom surface faces the top surface of the slider. As viewed from above, the laser diode does not overlap the two reproduction wiring layers but overlaps at least one of the two recording wiring layers.

摘要翻译： 热辅助磁记录头包括滑块和固定到滑块的边缘发射激光二极管。 滑块包括：基板; 以及层叠在基板的上表面上方的MR元件，两个再现布线层，线圈，两个记录布线层，磁极，近场光产生元件和波导。 两个再现布线层向MR元件提供感测电流。 两个记录布线层向线圈提供线圈电流。 激光二极管具有包括用于发射激光的发射部分和底面的发射端面。 激光二极管被布置成使得底表面面向滑块的顶表面。 如上所述，激光二极管不与两个再现布线层重叠，而是与两个记录布线层中的至少一个重叠。

公开(公告)号：US07868628B2

公开(公告)日：2011-01-11

申请号：US11839840

申请日：2007-08-16

申请人： Koji Shimazawa

发明人： Koji Shimazawa

IPC分类号： G01R27/28 ,  H01F5/00

CPC分类号： H01F17/0006 ,  H01F7/0294 ,  H01F21/04 ,  H01F21/08 ,  H01F41/0266 ,  H01F41/0273 ,  H01F41/046 ,  Y10T29/49002 ,  Y10T29/4902

摘要： Provided is a material for tactile sensor, which is easy to be formed, and in which the shape, size and orientation of coils dispersed in the medium are sufficiently controlled. The tactile-sensitive material comprises a medium and a plurality of micro coils dispersed in the medium and constituting a LCR resonance circuit, and wherein each of the plurality of micro coils comprises at least one spiral coil portion, and coil axes of the plurality of micro coils are aligned along at least one direction and/or directed in at least one plane. When a tactile stress is applied to the tactile-sensitive material, the C component is varied significantly, which contributes to the improvement in sensitivity of the tactile sensor. Further, by providing a core at the coil center, the sensitivity is more improved.

摘要翻译： 提供易于形成的用于触觉传感器的材料，其中分散在介质中的线圈的形状，尺寸和取向被充分地控制。 触敏材料包括分散在介质中并构成LCR谐振电路的介质和多个微线圈，并且其中多个微型线圈中的每一个包括至少一个螺旋线圈部分和多个微型线圈的线圈轴 线圈沿着至少一个方向对准和/或定向在至少一个平面中。 当对触感敏感材料施加触觉应力时，C分量显着变化，这有助于提高触觉传感器的灵敏度。 此外，通过在线圈中心设置芯，灵敏度进一步提高。

公开(公告)号：US07826179B2

公开(公告)日：2010-11-02

申请号：US11856438

申请日：2007-09-17

申请人： Koji Shimazawa ,  Tsutomu Chou ,  Yoshihiro Tsuchiya

发明人： Koji Shimazawa ,  Tsutomu Chou ,  Yoshihiro Tsuchiya

IPC分类号： G11B5/39

CPC分类号： G11B5/3967 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3912 ,  H01F10/325

摘要： The invention provides a magneto-resistive effect device of the CPP (current perpendicular to plane) structure, comprising a magneto-resistive effect unit, and an upper shield layer and a lower shield layer located with that magneto-resistive effect unit sandwiched between them, with a sense current applied in a stacking direction, wherein the magneto-resistive effect unit comprises a nonmagnetic metal intermediate layer, and a first ferromagnetic layer and a second ferromagnetic layer stacked and formed with that nonmagnetic metal intermediate layer sandwiched between them, wherein the first ferromagnetic layer and said second ferromagnetic layer are exchange coupled via the nonmagnetic metal intermediate layer such that where there is no bias magnetic field applied as yet, their magnetizations are anti-parallel with each other, and at least one of the upper shield layer and the lower shield layer has an inclined magnetization structure with its magnetization inclining with respect to a track width direction, so that by the magnetization of that inclined magnetization structure, a bias magnetic field can be applied to the first ferromagnetic layer and the second ferromagnetic layer. It is thus possible to obtain a magneto-resistive effect device of improved reliability that enables a structure capable of having a narrowed read gap (the gap between the upper shield and the lower shield) to be adopted to meet the recently demanded ultra-high recording density, allows a stable bias magnetic field to be applied in simple structure, and obtain a stable magneto-resistive effect change.

摘要翻译： 本发明提供了CPP（电流垂直于平面）结构的磁阻效应器件，包括磁阻效应单元，以及位于它们之间的该磁阻效应单元的上屏蔽层和下屏蔽层， 其中感应电流沿堆叠方向施加，其中所述磁阻效应单元包括非磁性金属中间层，以及与夹在其间的非磁性金属中间层堆叠并形成的第一铁磁层和第二铁磁层，其中所述第一 铁磁层和所述第二铁磁层经由非磁性金属中间层交换耦合，使得在没有施加偏压磁场的情况下，它们的磁化彼此反平行，并且上屏蔽层和 下屏蔽层具有相对于其磁化倾斜的倾斜磁化结构 轨道宽度方向，使得通过该倾斜磁化结构的磁化，可以将偏置磁场施加到第一铁磁层和第二铁磁层。 因此，可以获得具有改善的可靠性的磁阻效应装置，使得能够采用能够具有窄的读取间隙（上屏蔽和下屏蔽之间的间隙）的结构来满足最近要求的超高记录 密度，允许以简单的结构施加稳定的偏置磁场，并获得稳定的磁阻效应变化。

公开(公告)号：US07782575B2

公开(公告)日：2010-08-24

申请号：US11698180

申请日：2007-01-26

申请人： Yoshihiro Tsuchiya ,  Kei Hirata ,  Tomohito Mizuno ,  Koji Shimazawa

发明人： Yoshihiro Tsuchiya ,  Kei Hirata ,  Tomohito Mizuno ,  Koji Shimazawa

IPC分类号： G11B5/39

CPC分类号： G11B5/59683 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3909 ,  G11B5/3929 ,  G11B2005/3996

摘要： An MR element includes: a free layer having a direction of magnetization that changes in response to a signal 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 nonmagnetic metal layer and a second nonmagnetic metal layer each made of a nonmagnetic metal material, and a semiconductor layer that is made of a material containing an oxide semiconductor and that is disposed between the first and second nonmagnetic metal layers. The MR element has a resistance-area product within a range of 0.1 to 0.3Ω·μm2, and the spacer layer has a conductivity within a range of 133 to 432 S/cm.

摘要翻译： MR元件包括：具有响应于信号磁场而改变的磁化方向的自由层; 具有固定的磁化方向的钉扎层; 以及设置在这些层之间的间隔层。 间隔层包括由非磁性金属材料制成的第一非磁性金属层和第二非磁性金属层，以及由含有氧化物半导体的材料制成并且设置在第一和第二非磁性金属层之间的半导体层。 MR元件的电阻面积为0.1〜0.3Ω·Ω·cm 2，间隔层的导电率为133〜432S / cm。

公开(公告)号：US20100172220A1

公开(公告)日：2010-07-08

申请号：US12349956

申请日：2009-01-07

申请人： Eiji Komura ,  Koji Shimazawa

发明人： Eiji Komura ,  Koji Shimazawa

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  B82Y10/00 ,  G11B5/4866 ,  G11B5/6088 ,  G11B5/743 ,  G11B2005/001 ,  G11B2005/0021

摘要： Provided is a near-field light generating element in which as much amount as possible of waveguide light can be coupled with a plasmon antenna. The element comprises a light waveguide and a plasmon antenna comprising a surface or edge for propagating surface plasmon excited by waveguide light, extending to a near-field light generating end. A groove is formed in a waveguide side surface. And at least a portion of the surface or edge is embedded in the groove or located directly above the groove, being opposed to a wall or bottom surface of the groove with a predetermined distance, so as for waveguide light to be coupled with the plasmon antenna in surface plasmon mode. This configuration enables the surface or edge to be located at the position in which the surface or edge can be coupled with more amount of light, thereby to improve the light use efficiency.

摘要翻译： 提供了一种近场光产生元件，其中尽可能多的波导光可以与等离子体激元天线耦合。 元件包括光波导和等离子体激元，其包括用于传播由波导光激发的表面等离子体激元的表面或边缘，延伸到近场光产生端。 在波导侧面形成有槽。 并且所述表面或边缘的至少一部分嵌入在所述凹槽中或者位于所述凹槽的正上方，与所述凹槽的壁或底表面相隔预定距离，以便与所述等离子体天线耦合的波导光 在表面等离子体激元模式。 这种构造使得表面或边缘能够位于表面或边缘可以与更多量的光耦合的位置，从而提高光的使用效率。