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11. 发明申请

US20090303640A1 MAGNETO-RESISTANCE EFFECT ELEMENT PROVIDED WITH CURRENT LIMITING LAYER INCLUDING MAGNETIC MATERIAL 审中-公开
标题翻译：具有电流限制层的磁阻效应元件，包括磁性材料
公开(公告)号：US20090303640A1
公开(公告)日：2009-12-10
申请号：US12109651
申请日：2008-04-25
申请人： Tomohito Mizuno , Koji Shimazawa , Yoshihiro Tsuchiya , Daisuke Miyauchi , Takahiko Machita , Shinji Hara , Tsutomu Chou , Hironobu Matsuzawa , Toshiyuki Ayukawa , Tsuyoshi Ichiki
发明人： Tomohito Mizuno , Koji Shimazawa , Yoshihiro Tsuchiya , Daisuke Miyauchi , Takahiko Machita , Shinji Hara , Tsutomu Chou , Hironobu Matsuzawa , Toshiyuki Ayukawa , Tsuyoshi Ichiki
IPC分类号： G11B5/33
CPC分类号： G11B5/3983 , B82Y25/00 , G01R33/093 , G11B5/3906 , G11B5/398 , H01F10/3254 , H01F10/3259 , H01F10/3272 , H01L43/08 , H01L43/10
摘要： A magneto resistance effect element includes a first magnetic layer, a second magnetic layer and a spacer layer interposed between the first and second magnetic layers. The magneto resistance effect element is configured to allow sense current to flow in a direction that is perpendicular to film planes of the first magnetic layer, the second magnetic layer and the spacer layer so that a relative angle between a magnetization direction of the first magnetic layer and a magnetization direction of the second magnetic layer varies depending on an external magnetic field. The present invention aims at providing a magneto resistance effect element which ensures high resistance to sense current, while limiting the influence of the current limiting layer on the magnetic layer, and which thereby achieves a high magneto resistance ratio.
摘要翻译：磁阻效应元件包括介于第一和第二磁性层之间的第一磁性层，第二磁性层和间隔层。磁阻效应元件被配置为允许感测电流在垂直于第一磁性层，第二磁性层和间隔层的膜平面的方向上流动，使得第一磁性层的磁化方向并且第二磁性层的磁化方向根据外部磁场而变化。本发明旨在提供一种确保对感应电流的高电阻的磁阻效应元件，同时限制限流层对磁性层的影响，从而实现高的磁阻比。

12. 发明授权

US08213272B2 Multilayered waveguide having protruded light-emitting end 有权
标题翻译：具有突出发光端的多层波导
公开(公告)号：US08213272B2
公开(公告)日：2012-07-03
申请号：US12482851
申请日：2009-06-11
申请人： Seiichi Takayama , Satoshi Tomikawa , Toshiyuki Ayukawa , Daisuke Miyauchi , Koji Shimazawa
发明人： Seiichi Takayama , Satoshi Tomikawa , Toshiyuki Ayukawa , Daisuke Miyauchi , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G02B6/1228 , G02B2006/12078 , G11B5/3133 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： A waveguide is provided, in which the optical coupling efficiency to a light source is sufficiently high, and the light-emitting spot center is stably provided at the intended position. The waveguide comprises a multilayered structure in which refractive indexes of layers having a surface contact with each other are different from each other. The multilayered structure is divided into a plurality of groups, and the length from the light-receiving end surface to the light-emitting end surface of one group is different from that of the neighboring group, and the protruded light-emitting end surface of the first group defined as a group that has the largest length includes a center of the light-emitting spot. In this waveguide, the state in which the light-emitting spot center is positioned within the light-emitting end surface does not easily be changed, even when the light-receiving spot center within the light-receiving end surface is rather displaced.
摘要翻译：提供了一种波导，其中对光源的光耦合效率足够高，并且发光光点中心稳定地设置在预期位置。波导包括彼此具有表面接触的层的折射率彼此不同的多层结构。多层结构被分成多个组，从一个组的受光端面到发光端面的长度不同于相邻组的发光端面的突出的发光端面被定义为具有最大长度的组的第一组包括发光点的中心。在该波导中，发光光点中心位于发光端面内的状态也不容易改变，即使光接收端面内的光接收点中心相当偏离。

13. 发明申请

US20100315736A1 Multilayered Waveguide Having Protruded Light-Emitting End 有权
标题翻译：具有突出发光端的多层波导
公开(公告)号：US20100315736A1
公开(公告)日：2010-12-16
申请号：US12482851
申请日：2009-06-11
申请人： Seiichi Takayama , Satoshi Tomikawa , Toshiyuki Ayukawa , Daisuke Miyauchi , Koji Shimazawa
发明人： Seiichi Takayama , Satoshi Tomikawa , Toshiyuki Ayukawa , Daisuke Miyauchi , Koji Shimazawa
IPC分类号： G11B5/02 , G02B6/10
CPC分类号： G02B6/1228 , G02B2006/12078 , G11B5/3133 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： A waveguide is provided, in which the optical coupling efficiency to a light source is sufficiently high, and the light-emitting spot center is stably provided at the intended position. The waveguide comprises a multilayered structure in which refractive indexes of layers having a surface contact with each other are different from each other. The multilayered structure is divided into a plurality of groups, and the length from the light-receiving end surface to the light-emitting end surface of one group is different from that of the neighboring group, and the protruded light-emitting end surface of the first group defined as a group that has the largest length includes a center of the light-emitting spot. In this waveguide, the state in which the light-emitting spot center is positioned within the light-emitting end surface does not easily be changed, even when the light-receiving spot center within the light-receiving end surface is rather displaced.
摘要翻译：提供了一种波导，其中对光源的光耦合效率足够高，并且发光光点中心稳定地设置在预期位置。波导包括彼此具有表面接触的层的折射率彼此不同的多层结构。多层结构被分成多个组，从一个组的受光端面到发光端面的长度不同于相邻组的发光端面的突出的发光端面被定义为具有最大长度的组的第一组包括发光点的中心。在该波导中，发光光点中心位于发光端面内的状态也不容易改变，即使光接收端面内的光接收点中心相当偏离。

14. 发明授权

US07881021B2 CPP type magnetoresistive device with biasing arrangement for ferromagnetic layers having respective magnetizations orthogonal to one another, and magnetic disk system using same 有权
标题翻译：具有用于具有彼此正交的相应磁化的铁磁层的偏置装置的CPP型磁阻器件，以及使用它们的磁盘系统
公开(公告)号：US07881021B2
公开(公告)日：2011-02-01
申请号：US12022538
申请日：2008-01-30
申请人： Tsutomu Chou , Yoshihiro Tsuchiya , Daisuke Miyauchi , Takahiko Machita , Shinji Hara , Tomohito Mizuno , Hironobu Matsuzawa , Toshiyuki Ayukawa , Koji Shimazawa , Kiyoshi Noguchi
发明人： Tsutomu Chou , Yoshihiro Tsuchiya , Daisuke Miyauchi , Takahiko Machita , Shinji Hara , Tomohito Mizuno , Hironobu Matsuzawa , Toshiyuki Ayukawa , Koji Shimazawa , Kiyoshi Noguchi
IPC分类号： G11B5/39
CPC分类号： G11B5/398 , B82Y25/00 , G01R33/093 , G11B5/3916 , G11B5/3932 , G11B5/3967
摘要： A magnetoresistive device with CPP structure, comprising a nonmagnetic intermediate layer, and a first ferromagnetic layer and a second ferromagnetic layer stacked and formed with said nonmagnetic intermediate layer interposed between them, wherein each of said first and second ferromagnetic layers comprises a sensor area joining to the nonmagnetic intermediate layer and a magnetization direction control area that extends further rearward from the position of the rear end of said nonmagnetic intermediate layer; a magnetization direction control multilayer arrangement is interposed at an area where the magnetization direction control area for said first ferromagnetic layer is opposite to the magnetization direction control area for said second ferromagnetic layer to produce magnetizations of the said first and second ferromagnetic layers which are antiparallel with each other; and said sensor area is provided at both width direction ends with biasing layers working such that the mutually antiparallel magnetizations of said first and second ferromagnetic layers intersect in substantially orthogonal directions.
摘要翻译：一种具有CPP结构的磁阻器件，包括非磁性中间层，以及第一铁磁层和第二铁磁层，所述第一铁磁层和第二铁磁层层叠并形成有位于它们之间的所述非磁性中间层，其中所述第一和第二铁磁层中的每一个包括连接到所述非磁性中间层和从所述非磁性中间层的后端的位置向后延伸的磁化方向控制区域; 磁化方向控制多层布置被插入在所述第一铁磁层的磁化方向控制区域与所述第二铁磁层的磁化方向控制区域相反的区域处，以产生与所述第一和第二铁磁层反平行的所述第一和第二铁磁层的磁化彼此; 并且所述传感器区域设置在两个宽度方向端，偏压层工作，使得所述第一和第二铁磁层的相互反平行磁化在大致正交的方向相交。

15. 发明授权

US07855859B2 Magnetoresistive element and magnetic head 有权
标题翻译：磁阻元件和磁头
公开(公告)号：US07855859B2
公开(公告)日：2010-12-21
申请号：US12005273
申请日：2007-12-27
申请人： Shinji Hara , Koji Shimazawa , Yoshihiro Tsuchiya , Tomohito Mizuno , Tsuyoshi Ichiki , Toshiyuki Ayukawa
发明人： Shinji Hara , Koji Shimazawa , Yoshihiro Tsuchiya , Tomohito Mizuno , Tsuyoshi Ichiki , Toshiyuki Ayukawa
IPC分类号： G11B5/33
CPC分类号： G01R33/098 , B82Y25/00 , G01R33/093 , G11B5/3906 , H01L43/08
摘要： In an MR element, first and second ferromagnetic layers are antiferromagnetically coupled to each other through a spacer layer, and have magnetizations that are in opposite directions when no external magnetic field is applied thereto and that change directions in response to an external magnetic field. The spacer layer and the second ferromagnetic layer are stacked in this order on the first ferromagnetic layer. The first ferromagnetic layer includes a plurality of ferromagnetic material layers stacked, and an insertion layer made of a nonmagnetic material and inserted between respective two of the ferromagnetic material layers that are adjacent to each other along the direction in which the layers are stacked. The ferromagnetic material layers and the spacer layer each include a component whose crystal structure is a face-centered cubic structure. The spacer layer and the insertion layer are each composed of an element having an atomic radius greater than that of at least one element constituting the ferromagnetic material layers.
摘要翻译：在MR元件中，第一和第二铁磁层通过间隔层彼此反铁磁耦合，并且当不施加外部磁场并且响应于外部磁场改变方向时，具有相反方向的磁化。间隔层和第二铁磁层依次堆叠在第一铁磁层上。第一铁磁层包括堆叠的多个铁磁材料层和由非磁性材料制成的插入层，并且插入在彼此相邻的两个铁磁材料层之间，沿堆叠层的方向相邻。铁磁材料层和间隔层各自包括晶体结构为面心立方结构的成分。间隔层和插入层各自由原子半径大于构成铁磁体层的至少一个元素的原子半径的元素构成。

16. 发明申请

US20090290264A1 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.

17. 发明申请

US20090168264A1 Magnetoresistive element and magnetic head 有权
标题翻译：磁阻元件和磁头
公开(公告)号：US20090168264A1
公开(公告)日：2009-07-02
申请号：US12005273
申请日：2007-12-27
申请人： Shinji Hara , Koji Shimazawa , Yoshihiro Tsuchiya , Tomohito Mizuno , Tsuyoshi Ichiki , Toshiyuki Ayukawa
发明人： Shinji Hara , Koji Shimazawa , Yoshihiro Tsuchiya , Tomohito Mizuno , Tsuyoshi Ichiki , Toshiyuki Ayukawa
IPC分类号： G11B5/33
CPC分类号： G01R33/098 , B82Y25/00 , G01R33/093 , G11B5/3906 , H01L43/08
摘要： In an MR element, first and second ferromagnetic layers are antiferromagnetically coupled to each other through a spacer layer, and have magnetizations that are in opposite directions when no external magnetic field is applied thereto and that change directions in response to an external magnetic field. The spacer layer and the second ferromagnetic layer are stacked in this order on the first ferromagnetic layer. The first ferromagnetic layer includes a plurality of ferromagnetic material layers stacked, and an insertion layer made of a nonmagnetic material and inserted between respective two of the ferromagnetic material layers that are adjacent to each other along the direction in which the layers are stacked. The ferromagnetic material layers and the spacer layer each include a component whose crystal structure is a face-centered cubic structure. The spacer layer and the insertion layer are each composed of an element having an atomic radius greater than that of at least one element constituting the ferromagnetic material layers.
摘要翻译：在MR元件中，第一和第二铁磁层通过间隔层彼此反铁磁耦合，并且当不施加外部磁场并且响应于外部磁场改变方向时，具有相反方向的磁化。间隔层和第二铁磁层依次堆叠在第一铁磁层上。第一铁磁层包括堆叠的多个铁磁材料层和由非磁性材料制成的插入层，并且插入在彼此相邻的两个铁磁材料层之间，沿堆叠层的方向相邻。铁磁材料层和间隔层各自包括晶体结构为面心立方结构的成分。间隔层和插入层各自由原子半径大于构成铁磁体层的至少一个元素的原子半径的元素构成。

18. 发明授权

US07947188B2 Method for manufacturing CPP-type magnetoresistance effect element 有权
标题翻译： CPP型磁阻效应元件的制造方法
公开(公告)号：US07947188B2
公开(公告)日：2011-05-24
申请号：US12318481
申请日：2008-12-30
申请人： Toshiyuki Ayukawa , Shinji Hara , Daisuke Miyauchi , Takahiko Machita , Yoshihiro Tsuchiya
发明人： Toshiyuki Ayukawa , Shinji Hara , Daisuke Miyauchi , Takahiko Machita , Yoshihiro Tsuchiya
IPC分类号： B44C1/22
CPC分类号： G11B5/3163 , G11B5/3929
摘要： A method for manufacturing a thin film magnetic head includes a step for forming an MR layered body; a step for forming a first sacrificial layer made of material removable by wet etching, and subsequently, forming a cap layer on the upper surface of the first sacrificial layer; further, a step for patterning the MR layered body and the cap layer and then filling part of the removed areas of the MR layered body and the cap layer with a bias magnetic layer and the remaining with insulating layers; a step for removing the cap layer by dry etching and, subsequently, removing the first sacrificial layer by wet etching; and a step for forming a second shield layer above the MR layered body and the bias magnetic layer.
摘要翻译：制造薄膜磁头的方法包括形成MR层叠体的步骤; 用于形成由通过湿蚀刻除去的材料制成的第一牺牲层的步骤，随后在所述第一牺牲层的上表面上形成盖层; 另外，用于对MR层叠体和盖层进行图案化，然后用偏磁层填充MR层状体和盖层的去除区域的一部分，剩余的具有绝缘层的步骤; 通过干蚀刻去除盖层的步骤，随后通过湿法蚀刻去除第一牺牲层; 以及在MR层叠体和偏磁层上形成第二屏蔽层的工序。

19. 发明申请

US20090128965A1 CPP MAGNETO-RESISTIVE ELEMENT PROVIDED WITH A PAIR OF MAGNETIC LAYERS AND NICR BUFFER LAYER 审中-公开
标题翻译： CPP磁电元件提供一对磁性层和NICR缓冲层
公开(公告)号：US20090128965A1
公开(公告)日：2009-05-21
申请号：US11940511
申请日：2007-11-15
申请人： Tomohito MIZUNO , Yoshihiro TSUCHIYA , Shinji HARA , Koji SHIMAZAWA , Daisuke MIYAUCHI , Takahiko MACHITA , Tsutomu CHOU , Toshiyuki AYUKAWA , Hironobu MATSUZAWA , Tsuyoshi ICHIKI
发明人： Tomohito MIZUNO , Yoshihiro TSUCHIYA , Shinji HARA , Koji SHIMAZAWA , Daisuke MIYAUCHI , Takahiko MACHITA , Tsutomu CHOU , Toshiyuki AYUKAWA , Hironobu MATSUZAWA , Tsuyoshi ICHIKI
IPC分类号： G11B5/33
CPC分类号： G11B5/3912 , B82Y25/00 , G01R33/093 , G11B5/3906 , G11B5/3932 , H01L43/10
摘要： A magnetic field detecting element has a stack which includes a NiCr layer, a first magnetic layer whose magnetization direction varies in accordance with an external magnetic field, a non-magnetic spacer layer, and a second magnetic layer whose magnetization direction varies in accordance with the external magnetic field, said NiCr layer, said first magnetic layer, said spacer layer and said second magnetic layer being disposed in this order and being arranged in contact with each other, wherein a sense current is adapted to flow in a direction that is perpendicular to a film surface of said stack; and a bias magnetic layer which is disposed on a side of said stack, said side being opposite to an air bearing surface of said stack, wherein said bias magnetic layer is adapted to apply a bias magnetic field to said stack in a direction that is perpendicular to said air bearing surface. Both first and second magnetic layers have bcc crystalline structures, and said non-magnetic spacer layer has a film configuration in which an insulating layer or a semiconductor layer is inserted into a metal layer.
摘要翻译：磁场检测元件具有堆叠，其包括NiCr层，其磁化方向根据外部磁场变化的第一磁性层，非磁性间隔层和其磁化方向根据外部磁场，所述NiCr层，所述第一磁性层，所述间隔层和所述第二磁性层按此顺序设置并且彼此接触，其中感测电流适于沿垂直于所述堆叠的膜表面; 以及偏置磁性层，其设置在所述堆叠的一侧，所述侧面与所述堆叠的空气支承表面相对，其中所述偏置磁性层适于在垂直方向上向所述堆叠施加偏置磁场到所述空气轴承表面。第一和第二磁性层都具有bcc晶体结构，并且所述非磁性间隔层具有绝缘层或半导体层插入到金属层中的膜结构。

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