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51. 发明申请

US20100149930A1 NEAR-FIELD LIGHT GENERATING ELEMENT COMPRISING SURFACE PLASMON ANTENNA WITH SURFACE OR EDGE OPPOSED TO WAVEGUIDE 有权
标题翻译：包含表面等离子体天线的近场光产生元件与表面或边缘相对的波导
公开(公告)号：US20100149930A1
公开(公告)日：2010-06-17
申请号：US12335943
申请日：2008-12-16
申请人： Eiji Komura , Koji Shimazawa , Daisuke Miyauchi
发明人： Eiji Komura , Koji Shimazawa , Daisuke Miyauchi
IPC分类号： G11B11/00 , G11B5/02
CPC分类号： G11B5/314 , G11B5/4866 , G11B5/6088 , G11B7/1387 , G11B2005/001 , G11B2005/0021
摘要： Provided is a near-field light generating element in which reduced is the propagation loss of excited surface plasmon that propagates to the near-field light generating end. The element comprises: a waveguide through which light for exciting surface plasmon propagates; and a plasmon antenna comprising a near-field light generating end and a propagation surface or edge. The propagation surface or edge extends to the near-field light generating end, and causes surface plasmon excited by the light to propagate thereon. Further, a portion of the side surface on the near-field light generating end side is opposed to the propagation surface or edge with a predetermined distance so as for the light to be coupled with the plasmon antenna in a surface plasmon mode. In this configuration, surface plasmon can propagates without significantly changing its wavenumber, which leads to a less propagation loss, and to an improved light use efficiency.
摘要翻译：提供了一种近场光产生元件，其中传播到近场光产生端的被激发的表面等离子体激元的传播损耗减小。该元件包括：用于激发表面等离子体激元的光传播的波导; 以及包括近场光产生端和传播表面或边缘的等离子体激元天线。传播表面或边缘延伸到近场光产生端，并且使由光激发的表面等离子体激发在其上。此外，近场光产生端侧的侧面的一部分与传播面或边缘以预定距离相对，以便以等离子体激元模式与等离子体激元天线耦合的光。在这种配置中，表面等离子体激元可以传播而不会明显地改变其波数，这导致较少的传播损耗，并提高光的使用效率。

52. 发明申请

US20100103553A1 SURFACE PLASMON ANTENNA WITH PROPAGATION EDGE AND NEAR-FIELD LIGHT GENERATING ELEMENT 有权
标题翻译：具有传播边缘和近场光生成元件的表面等离子体天线
公开(公告)号：US20100103553A1
公开(公告)日：2010-04-29
申请号：US12260639
申请日：2008-10-29
申请人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
发明人： Koji Shimazawa , Eiji Komura , Yasuhiro Ito , Seiichi Takayama , Satoshi Tomikawa , Daisuke Miyauchi , Kosuke Tanaka
IPC分类号： G11B5/02 , G21G4/00
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G11B5/4866 , G11B2005/001 , G11B2005/0021
摘要： Provided is a surface plasmon antenna that can be set so that the emitting position on the end surface of the plasmon antenna where near-field light is emitted is located sufficiently close to the end of a magnetic pole. The surface plasmon antenna comprises an edge having a portion for coupling with a light in a surface plasmon mode. The edge is provided for propagating surface plasmon excited by the light and extends from the portion to a near-field light generating end surface that emits near-field light. The edge for propagating surface plasmon is a very narrow propagation region. Therefore, the near-field light generating end surface, which appears as a polished surface processed through polishing in the manufacturing of the plasmon antenna, can be made a shape with a very small size, and further can be set so that surface plasmon propagates to reach the end surface reliably.
摘要翻译：提供了一种表面等离子体激元天线，其可以被设置为使得发射近场光的等离子体激元天线的端面上的发射位置足够靠近磁极的端部。表面等离子体激元天线包括具有用于与表面等离子体激元模式的光耦合的部分的边缘。该边缘用于传播由光激发的表面等离子体激元，并从该部分延伸到发射近场光的近场光产生端面。传播表面等离子体激元的边缘是非常窄的传播区域。因此，通过在等离子体激元天线的制造中通过研磨处理的抛光面的近场光产生端面可以形成为非常小的形状，并且还可以将表面等离子体激元传播到可靠地到达端面。

53. 发明申请

US20090201612A1 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：US20090201612A1
公开(公告)日：2009-08-13
申请号：US12028243
申请日：2008-02-08
申请人： Koji SHIMAZAWA , Tsutomu Chou , Daisuke Miyauchi
发明人： Koji SHIMAZAWA , Tsutomu Chou , Daisuke Miyauchi
IPC分类号： G11B5/33 , H01L43/08
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3912 , G11B5/398 , G11B2005/3996 , H01L43/08
摘要： The invention provides a magnetoresistive device of the CPP (current perpendicular to plane) structure, comprising a magnetoresistive unit, and a first shield layer and a second shield layer which are located and formed such that the magnetoresistive unit is sandwiched between them from above and below, with a sense current applied in the stacking direction, wherein said magnetoresistive unit comprises a non-magnetic 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.
摘要翻译：本发明提供了CPP（电流垂直于平面）结构的磁阻器件，包括磁阻单元，以及第一屏蔽层和第二屏蔽层，它们被定位和形成，使得磁阻单元从上方和下方夹在它们之间，其中所述磁阻单元包括非磁性中间层，并且堆叠并形成第一铁磁层和第二铁磁层，使得所述非磁性中间层夹在它们之间。

54. 发明申请

US20110002199A1 Near-Field Light Generator Comprising Waveguide With Inclined End Surface 有权
标题翻译：包括倾斜端面波导的近场光发生器
公开(公告)号：US20110002199A1
公开(公告)日：2011-01-06
申请号：US12496340
申请日：2009-07-01
申请人： Seiichi Takayama , Daisuke Miyauchi , Susumu Aoki , Koji Shimazawa
发明人： Seiichi Takayama , Daisuke Miyauchi , Susumu Aoki , Koji Shimazawa
IPC分类号： G11B11/00 , G02B6/12 , G11B5/02
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G11B5/3116 , G11B5/3143 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a near-field light generator capable of avoiding a noise to the generated near-field light. The generator comprises a waveguide and a plasmon antenna comprising a propagation surface or edge, for propagating surface plasmon, extending to a near-field light generating end. A portion of one side surface of the waveguide is opposed to a portion of the propagation surface or edge, so as for the waveguide light to be coupled with the plasmon antenna. And an end surface of the waveguide is inclined in such a way as to become away from the plasmon antenna toward the near-field light generating end side. The light that propagates through the waveguide and is not transformed into surface plasmon is refracted or totally reflected in the inclined end surface, does not come close to the generated near-field light, thus does not become a noise for the generated near-field light.
摘要翻译：提供能够避免产生的近场光的噪声的近场光发生器。发生器包括波导和等离子体激元天线，其包括传播表面等离子体的传播表面或边缘，延伸到近场光产生端。波导的一个侧表面的一部分与传播表面或边缘的一部分相对，以使波导光与等离子体激元天线耦合。并且波导的端面以使得等离子体激元离开近场光产生端侧的方式倾斜。通过波导传播并且未被转换成表面等离子体的光在倾斜端面折射或全反射，不会接近所产生的近场光，因此不会产生所产生的近场光的噪声。

55. 发明申请

US20090273864A1 Magnetoresistive element including two ferromagnetic layers 有权
标题翻译：磁阻元件包括两个铁磁层
公开(公告)号：US20090273864A1
公开(公告)日：2009-11-05
申请号：US12005274
申请日：2007-12-27
申请人： Takahiko Machita , Kei Hirata , Koji Shimazawa , Daisuke Miyauchi
发明人： Takahiko Machita , Kei Hirata , Koji Shimazawa , Daisuke Miyauchi
IPC分类号： G11B5/33 , B44C1/22
CPC分类号： G01R33/093 , B82Y25/00 , G01R33/098 , G11B5/3912 , G11B5/3932 , H01L43/12
摘要： A magnetoresistive element includes a first and a second shield, and an MR stack disposed between the shields. The MR stack includes a first and a second ferromagnetic layer, and a nonmagnetic spacer layer disposed between the ferromagnetic layers. The first and second ferromagnetic layers have magnetizations that are in directions antiparallel to each other when no external magnetic field is applied to the layers, and that change directions in response to an external magnetic field. An insulating layer is formed to touch a rear end face of the MR stack and the first shield, and a bias magnetic field applying layer is formed above the insulating layer with a buffer layer disposed in between. The bias magnetic field applying layer includes a hard magnetic layer and a high saturation magnetization layer. The high saturation magnetization layer is located between the rear end face and the hard magnetic layer, but not located between the first shield and the hard magnetic layer.
摘要翻译：磁阻元件包括第一和第二屏蔽以及设置在屏蔽之间的MR堆叠。 MR堆叠包括第一和第二铁磁层，以及设置在铁磁层之间的非磁性间隔层。当没有外部磁场施加到层上时，第一和第二铁磁层具有在彼此反平行的方向上的磁化，并且响应于外部磁场改变方向。形成绝缘层以接触MR堆叠和第一屏蔽的后端面，并且在绝缘层上形成有偏置磁场施加层，其间设置有缓冲层。偏置磁场施加层包括硬磁性层和高饱和磁化层。高饱和磁化层位于后端面和硬磁性层之间，但不位于第一屏蔽和硬磁性层之间。

56. 发明授权

US08391106B2 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：US08391106B2
公开(公告)日：2013-03-05
申请号：US12461157
申请日：2009-08-03
申请人： Koji Shimazawa , Yasuhiro Ito , Yuji Kakinuma , Daisuke Miyauchi , Kosuke Tanaka
发明人： Koji Shimazawa , Yasuhiro Ito , Yuji Kakinuma , Daisuke Miyauchi , Kosuke Tanaka
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 that emits polarized light of TM mode. The laser diode is arranged so that its bottom surface faces the top surface of the slider. An electrode of the laser diode closer to the active layer is bonded to a conductive layer of the slider, whereby the laser diode is fixed to the slider. As viewed from above the laser diode, the bottom surface of the electrode of the laser diode includes a first area that a light propagation path of the laser diode overlies, and a second area other than the first area. The top surface of the conductive layer is in contact not with the first area but with the second area of the bottom surface of the electrode.
摘要翻译：热辅助磁记录头包括滑块和发射TM模的偏振光的边缘发射激光二极管。激光二极管被布置成使得其底表面面向滑块的顶表面。更靠近有源层的激光二极管的电极被接合到滑块的导电层，由此激光二极管被固定到滑块。从激光二极管的上方观察，激光二极管的电极的底面包括激光二极管的光传播路径重叠的第一区域和第一区域以外的第二区域。导电层的顶表面不与第一区域接触，而是与电极底表面的第二区域接触。

57. 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。

58. 发明授权

US08116173B2 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：US08116173B2
公开(公告)日：2012-02-14
申请号：US12458955
申请日：2009-07-28
申请人： Koji Shimazawa , Seiichi Takayama , Yasuhiro Ito , Daisuke Miyauchi , Kosuke Tanaka
发明人： Koji Shimazawa , Seiichi Takayama , Yasuhiro Ito , Daisuke Miyauchi , Kosuke Tanaka
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 has a waveguide and an overcoat layer that covers the waveguide. 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. The waveguide has an incident end face opposed to the emission part of the laser diode. The overcoat layer has an end face that faces the emitting end face of the laser diode. As viewed from above, the end face of the overcoat layer has a convex shape protruding toward the emitting end face of the laser diode so that a part of the end face of the overcoat layer lying over the incident end face of the waveguide comes closest to the emitting end face of the laser diode.
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。滑块具有覆盖波导的波导和外涂层。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。波导具有与激光二极管的发射部分相对的入射端面。外涂层具有面向激光二极管的发射端面的端面。从上方观察，外涂层的端面具有向激光二极管的发射端面突出的凸形，使得位于波导的入射端面上的外涂层的端面的一部分最接近激光二极管的发射端面。

59. 发明授权

US08107325B2 Near-field light generating element comprising surface plasmon antenna with surface or edge opposed to waveguide 有权
标题翻译：近场光产生元件包括具有与波导相对的表面或边缘的表面等离子体天线
公开(公告)号：US08107325B2
公开(公告)日：2012-01-31
申请号：US12335943
申请日：2008-12-16
申请人： Eiji Komura , Koji Shimazawa , Daisuke Miyauchi
发明人： Eiji Komura , Koji Shimazawa , Daisuke Miyauchi
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/4866 , G11B5/6088 , G11B7/1387 , G11B2005/001 , G11B2005/0021
摘要： Provided is a near-field light generating element in which reduced is the propagation loss of excited surface plasmon that propagates to the near-field light generating end. The element comprises: a waveguide through which light for exciting surface plasmon propagates; and a plasmon antenna comprising a near-field light generating end and a propagation surface or edge. The propagation surface or edge extends to the near-field light generating end, and causes surface plasmon excited by the light to propagate thereon. Further, a portion of the side surface on the near-field light generating end side is opposed to the propagation surface or edge with a predetermined distance so as for the light to be coupled with the plasmon antenna in a surface plasmon mode. In this configuration, surface plasmon can propagates without significantly changing its wavenumber, which leads to a less propagation loss, and to an improved light use efficiency.
摘要翻译：提供了一种近场光产生元件，其中传播到近场光产生端的被激发的表面等离子体激元的传播损耗减小。该元件包括：用于激发表面等离子体激元的光传播的波导; 以及包括近场光产生端和传播表面或边缘的等离子体激元天线。传播表面或边缘延伸到近场光产生端，并且使由光激发的表面等离子体激发在其上。此外，近场光产生端侧的侧面的一部分与传播面或边缘以预定距离相对，以便以等离子体激元模式与等离子体激元天线耦合的光。在这种配置中，表面等离子体激元可以传播而不会明显地改变其波数，这导致较少的传播损耗，并提高光的使用效率。

60. 发明授权

US08089831B2 Heat-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：US08089831B2
公开(公告)日：2012-01-03
申请号：US12710129
申请日：2010-02-22
申请人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Daisuke Miyauchi
发明人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Daisuke Miyauchi
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A plasmon generator has an outer surface including a surface plasmon exciting surface, and has a near-field light generating part located in a medium facing surface. The surface plasmon exciting surface is a flat surface that faces an evanescent light generating surface of a waveguide with a predetermined distance therebetween. The surface plasmon exciting surface includes a width changing portion. The width of the width changing portion in a direction parallel to the medium facing surface and the evanescent light generating surface decreases with decreasing distance to the medium facing surface. A magnetic pole is located at such a position that the plasmon generator is interposed between the magnetic pole and the waveguide. The outer surface of the plasmon generator includes a pole contact surface that is in contact with the magnetic pole.
摘要翻译：等离子体发生器具有包括表面等离子体激元表面的外表面，并且具有位于介质面对表面中的近场光产生部。表面等离子体激元表面是面对波导的ev逝光产生表面的平坦表面，其间具有预定的距离。表面等离子体激元表面包括宽度改变部分。宽度改变部分在与面向介质的表面和ev逝光产生表面平行的方向上的宽度随着与面向介质的表面的距离的减小而减小。磁极位于这样的位置，等离子体发生器插入在磁极和波导之间。等离子体发生器的外表面包括与磁极接触的极接触表面。

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