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71. 发明授权

US08111591B2 Heat-assisted magnetic recording head having laser diode overlaping two recording wiring layers 有权
标题翻译：具有激光二极管的热辅助磁记录头与两个记录布线层重叠
公开(公告)号：US08111591B2
公开(公告)日：2012-02-07
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的发射端面和底表面。激光二极管被布置成使得底表面面向滑块。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。

72. 发明申请

US20110205660A1 Spot size converter and thermal assist magnetic recording head therewith 有权
标题翻译：点尺寸转换器和热辅助磁记录头
公开(公告)号：US20110205660A1
公开(公告)日：2011-08-25
申请号：US12659094
申请日：2010-02-25
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 , G02B6/036
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G02B6/1228 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A spot size converter according to the present invention is capable of shortening the waveguide length in the spot size converter and of promoting a size reduction of the optical waveguide itself because two cores having a taper portion are combined and those tapering angles are mutually aligned. Furthermore, spot size conversion efficiency is favorable even in a small size.
摘要翻译：根据本发明的点尺寸转换器能够缩短光斑尺寸转换器中的波导长度并且促进光波导本身的尺寸减小，因为具有锥形部分的两个芯体组合并且这些渐缩角度相互对准。此外，即使在小尺寸的情况下，光斑尺寸转换效率也是有利的。

73. 发明授权

US07948718B2 Magnetoresistive head having an insulating layer with a particular compressive stress 失效
标题翻译：具有具有特定压应力的绝缘层的磁阻头
公开(公告)号：US07948718B2
公开(公告)日：2011-05-24
申请号：US11078580
申请日：2005-03-14
申请人： Takahiko Machita , Koji Shimazawa
发明人： Takahiko Machita , Koji Shimazawa
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/399 , G11B2005/3996
摘要： An MR element incorporates: a nonmagnetic conductive layer having two surfaces facing toward opposite directions; a free layer disposed adjacent to one of the surfaces of the nonmagnetic conductive layer, wherein the direction of magnetization in the free layer changes in response to an external magnetic field; and a pinned layer disposed adjacent to the other of the surfaces of the nonmagnetic conductive layer, wherein the direction of magnetization in the pinned layer is fixed to the direction orthogonal to the air bearing surface. The MR element does not include any layer provided for fixing the direction of magnetization in the pinned layer. The pinned layer incorporates a ferromagnetic layer made of a ferromagnetic material having a positive magnetostriction constant. A bottom shield gap film and a top shield gap film disposed adjacent to the MR element each have a compressive stress of 600 MPa or greater.
摘要翻译： MR元件包括：具有朝向相反方向的两个表面的非磁性导电层; 邻近所述非磁性导电层的一个表面设置的自由层，其中所述自由层中的磁化方向响应于外部磁场而改变; 以及与非磁性导电层的另一个表面相邻设置的被钉扎层，其中被钉扎层中的磁化方向固定在与空气支承表面正交的方向上。 MR元件不包括用于固定钉扎层中的磁化方向的任何层。钉扎层包含由具有正磁致伸缩常数的铁磁材料制成的铁磁层。邻近MR元件设置的底部屏蔽间隙膜和顶部屏蔽间隙膜各自具有600MPa或更大的压缩应力。

74. 发明授权

US07936531B2 Thermally assisted magnetic head having an asymmetric plasmon antenna and manufacturing method thereof 有权
标题翻译：具有不对称等离子体激元天线的热辅助磁头及其制造方法
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。

75. 发明申请

US20110090587A1 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：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。

76. 发明授权

US07911882B2 Thin-film magnetic head with near-field-light-generating layer 有权
标题翻译：具有近场光产生层的薄膜磁头
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。

77. 发明申请

US20110038236A1 Near-Field Light Transducer Comprising Propagation Edge With Predetermined Curvature Radius 有权
标题翻译：近场光传感器包括具有预定曲率半径的传播边
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。

78. 发明申请

US20110026378A1 Heat-assisted magnetic recording head with laser diode 有权
标题翻译：带激光二极管的热辅助磁记录头
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。

79. 发明授权

US07881023B2 Magnetoresistive device of the CPP type, and magnetic disk system 有权
标题翻译： CPP型磁阻器和磁盘系统
公开(公告)号：US07881023B2
公开(公告)日：2011-02-01
申请号：US12019202
申请日：2008-01-24
申请人： Takahiko Machita , Koji Shimazawa , Daisuke Miyauchi , Tsutomu Chou
发明人： Takahiko Machita , Koji Shimazawa , Daisuke Miyauchi , Tsutomu Chou
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/3932 , B82Y25/00 , G01R33/093 , G11B5/3912 , G11B5/398 , H01L43/08
摘要： The invention provides a magnetoresistive device with the CPP (current perpendicular to plane) structure, comprising a magnetoresistive unit, and a first shield layer and a second shield layer located and formed such that the magnetoresistive unit is sandwiched between them, with a sense current applied in a stacking direction, wherein the magnetoresistive unit comprises a nonmagnetic intermediate layer, and a first ferromagnetic layer and a second ferromagnetic layer stacked and formed such that the nonmagnetic intermediate layer is interposed between them, wherein the first shield layer, and the second shield layer is controlled by magnetization direction control means in terms of magnetization direction, and the first ferromagnetic layer, and the second ferromagnetic layer receives action such that there is an antiparallel magnetization state created, in which mutual magnetizations are in opposite directions, under the influences of magnetic actions of the first shield layer and the second shield layer.
摘要翻译：本发明提供了一种具有CPP（电流垂直于平面）结构的磁阻器件，包括磁阻单元，以及位于并形成第一屏蔽层和第二屏蔽层，使得磁阻单元夹在它们之间，并施加感应电流在叠层方向上，其中所述磁阻单元包括非磁性中间层，以及堆叠并形成所述非磁性中间层的第一铁磁层和第二铁磁层，其中所述第一屏蔽层和所述第二屏蔽层在磁化方向上由磁化方向控制装置控制，并且第一铁磁层和第二铁磁层受到磁力的影响而产生相互磁化相反方向产生的反平行磁化状态的动作第一屏蔽层的动作和第二屏蔽层。

80. 发明授权

US07876535B2 Magnetoresistive device of the CPP type, and magnetic disk system 有权
标题翻译： CPP型磁阻器和磁盘系统
公开(公告)号：US07876535B2
公开(公告)日：2011-01-25
申请号：US12019205
申请日：2008-01-24
申请人： Takahiko Machita , Koji Shimazawa , Daisuke Miyauchi , Tsutomu Chou
发明人： Takahiko Machita , Koji Shimazawa , Daisuke Miyauchi , Tsutomu Chou
IPC分类号： G11B5/39
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3932 , G11B2005/3996
摘要： A magnetoresistive device of a CPP (current perpendicular to plane) structure includes a magnetoresistive unit sandwiched between a first substantially soft magnetic shield layer from below, and a second substantially soft magnetic shield layer from above, with a sense current applied in a stacking direction. The magnetoresistive unit includes a non-magnetic intermediate layer sandwiched between a first ferromagnetic layer, and a second ferromagnetic layer. At least one of the first and second shield layers is configured in a window frame of a planar shape, including a front frame-constituting portion and a back frame-constituting portion partially comprising a combination of a nonmagnetic gap layer with a bias magnetic field-applying layer. The combination of the nonmagnetic gap layer with the bias magnetic field-applying layer forms a closed magnetic path with magnetic flux going all the way around the window framework, turning the magnetization of the front frame-constituting portion into a single domain.
摘要翻译： CPP（电流垂直于平面）结构的磁阻器件包括夹在下面的第一基本上软磁屏蔽层和从上方的第二基本软磁屏蔽层之间的磁阻单元，其中沿堆叠方向施加感测电流。磁阻单元包括夹在第一铁磁层和第二铁磁层之间的非磁性中间层。第一屏蔽层和第二屏蔽层中的至少一个被配置在平面形状的窗框中，包括前框架构成部分和后框架构成部分，部分地包括具有偏磁场的非磁性间隙层的组合，应用层。非磁性间隙层与偏置磁场施加层的组合形成闭合的磁路，其中磁通量一直围绕窗框架，将前框架构成部分的磁化转变为单个畴。

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