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71. 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。

72. 发明授权

US08000178B2 Near-field light generating element utilizing surface plasmon 有权
标题翻译：利用表面等离子体激元的近场光产生元件
公开(公告)号：US08000178B2
公开(公告)日：2011-08-16
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： G11B11/00
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。

73. 发明授权

US07885029B2 Thermally-assisted magnetic recording head and thermally-assisted magnetic recording method 有权
标题翻译：热辅助磁记录头和热辅助磁记录方法
公开(公告)号：US07885029B2
公开(公告)日：2011-02-08
申请号：US12423269
申请日：2009-04-14
申请人： Daisuke Miyauchi , Susumu Aoki , Seiichi Takayama , Koji Shimazawa , Tetsuya Roppongi
发明人： Daisuke Miyauchi , Susumu Aoki , Seiichi Takayama , Koji Shimazawa , Tetsuya Roppongi
IPC分类号： G11B5/02
CPC分类号： G11B5/314 , G11B5/3116 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： A head capable of favorite thermally-assisted magnetic recording without depending on the use of a near-field light generator is provided. The head comprises a write head element formed on the trailing side from a waveguide and comprising a first main pole. The first main pole and the waveguide are opposed to each other through a first clad layer, and a second clad layer is provided on a rear side from the first main pole. This gives that the end surface of the waveguide can be placed much close to the end surface of the first main pole apart by only a thickness of the first clad layer. As a result, the end surface of the first main pole can apply a sufficient intensity of write field to the intensity center and its vicinity of the light spot formed on the magnetic recording layer.
摘要翻译：提供了一种能够不依赖于近场光发生器的使用的热辅助磁记录的头部。头包括形成在波导的后侧并包括第一主极的写头元件。第一主极和波导通过第一覆盖层彼此相对，并且第二覆盖层设置在从第一主极的后侧。这使得波导的端面可以被放置得非常靠近第一主极的端表面，只有第一覆盖层的厚度分开。结果，第一主极的端面可以对形成在磁记录层上的光点的强度中心及其附近施加足够强的写入场。

74. 发明授权

US07855937B2 Near-field light generating element and heat-assisted magnetic recording head utilizing surface plasmon mode 有权
标题翻译：近场光产生元件和利用表面等离激元模式的热辅助磁记录头
公开(公告)号：US07855937B2
公开(公告)日：2010-12-21
申请号：US12205484
申请日：2008-09-05
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： G11B11/00
CPC分类号： G11B5/314 , G11B5/4866 , G11B11/10536 , G11B11/1058 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a near-field light generating element capable of avoiding excessive temperature rise, which comprises a waveguide and a near-field light generating layer. The layer comprises: a propagation surface on which surface plasmon excited by the light propagates; and a near-field light generating end at which near-field light is generated. The end is one end of the propagation surface. And a portion of the side surface of the waveguide is opposed to a portion of the propagation surface of the near-field light generating layer with a predetermined spacing so that the light propagating through the waveguide is coupled with the near-field light generating layer in a surface plasmon mode. The near-field light generating layer is preferably tapered toward the near-field light generating end.
摘要翻译：本发明提供能够避免温度过高的近场光发生元件，其包括波导管和近场光产生层。该层包括：由光激发的表面等离子体激发的传播表面; 以及产生近场光的近场光产生端。最后是传播表面的一端。并且波导的侧面的一部分与近场光产生层的传播表面的一部分以预定的间隔相对，使得通过波导传播的光与近场光产生层耦合表面等离子体激元模式。近场光产生层优选地朝向近场光产生端逐渐变细。

75. 发明申请

US20100079895A1 PLASMON ANTENNA AND HEAT-ASSISTED MAGNETIC RECORDING HEAD 有权
标题翻译： PLASMON天线和热辅助磁记录头
公开(公告)号：US20100079895A1
公开(公告)日：2010-04-01
申请号：US12239141
申请日：2008-09-26
申请人： Seiichi Takayama , Eiji Komura , Kosuke Tanaka , Daisuke Miyauchi , Koji Shimazawa
发明人： Seiichi Takayama , Eiji Komura , Kosuke Tanaka , Daisuke Miyauchi , Koji Shimazawa
IPC分类号： G11B5/02 , G21G4/00 , G11B5/48
CPC分类号： G11B5/314 , G11B5/3116 , G11B7/122 , G11B7/1387 , G11B11/10536 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a plasmon antenna in which a near-field light having a sufficient intensity is generated only in a desired location. The plasmon antenna comprises an end surface on a side where a near-field light is generated; the end surface is flat and has a shape with at least three vertexes or rounded corners; and an end surface of the plasmon antenna which is opposite to the flat end surface and receives light, is inclined with respect to the flat end surface so as to become closer to the flat end surface toward one of the at least three vertexes or rounded corners. When the light-receiving end surface of the plasmon antenna is irradiated with the light, a near-field light having a sufficient intensity can be generated at only the vertex or rounded corner toward which the entire plasmon antenna becomes thinner.
摘要翻译：提供了一种等离子体激元天线，其中仅在期望的位置产生具有足够强度的近场光。等离子体激元天线包括在产生近场光的一侧上的端面; 端面平坦，具有至少三个顶点或圆角的形状; 以及等离子体激元天线的与平坦端面相对并且接收光的端面相对于平坦端面倾斜，以朝着至少三个顶点或圆角中的一个变得更靠近平坦端面。当等离子体激元的光接收端面用光照射时，只能在整个等离子体天线变薄的顶点或圆角处产生具有足够强度的近场光。

76. 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。

77. 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。

78. 发明授权

US08369192B1 Thermally-assisted magnetic recording head, head gimbal assembly and magnetic recording device 有权
标题翻译：热辅助磁记录头，磁头万向架组件和磁记录装置
公开(公告)号：US08369192B1
公开(公告)日：2013-02-05
申请号：US13298360
申请日：2011-11-17
申请人： Eiji Komura , Koji Shimazawa , Tsutomu Chou , Shinji Hara , Daisuke Miyauchi
发明人： Eiji Komura , Koji Shimazawa , Tsutomu Chou , Shinji Hara , Daisuke Miyauchi
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head enables even steeper magnetization reversal between adjacent magnetic domains of a magnetic recording medium and satisfies the demand for high SN ratio and high recording density. The thermally-assisted magnetic recording head includes a pole that generates a writing magnetic field from an end surface that forms a part of an air bearing surface that opposes a magnetic recording medium, a waveguide through which light for exciting surface plasmon propagates, and a plasmon generator that couples to the light in a surface plasmon mode. The plasmon generator has a plane part and a projection part, the pole has a projection part opposing surface that opposes the projection part, and the distance between the projection part opposing surface and the projection part is 10-40 nm.
摘要翻译：热辅助磁记录头使磁记录介质的相邻磁畴之间的磁化反转能够更高，并满足高SN比和高记录密度的要求。热辅助磁记录头包括从形成与磁记录介质相对的空气轴承表面的一部分的端面产生书写磁场的磁极，用于激发表面等离子体激元的光传播的波导和等离子体激元发生器以表面等离子体模式耦合到光。等离子体发生器具有平面部分和突出部分，所述极具有与突出部分相对的突出部分相对表面，并且突出部分相对表面和突出部分之间的距离为10-40nm。

79. 发明授权

US08305849B2 Thermally-assisted magnetic head 有权
标题翻译：热辅助磁头
公开(公告)号：US08305849B2
公开(公告)日：2012-11-06
申请号：US13013025
申请日：2011-01-25
申请人： Shinji Hara , Tsutomu Chou , Koji Shimazawa , Daisuke Miyauchi , Kosuke Tanaka
发明人： Shinji Hara , Tsutomu Chou , Koji Shimazawa , Daisuke Miyauchi , Kosuke Tanaka
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A thermally-assisted magnetic head that includes an air bearing surface facing a recording medium and that performs magnetic recording while heating the recording medium includes: a magnetic recording element including a pole of which one edge part is positioned on the air bearing surface and that generates magnetic flux traveling toward the magnetic recording medium; a waveguide configured with a core through which light propagates and a cladding, at least one part of which extends to the air bearing surface, surrounding the periphery of the core; a plasmon generator that faces a part of the core and that extends to the air bearing surface. The plasmon generator is configured with a first part and a second part that are joined; the first part that is positioned on the air bearing surface side and that is made of a high melting point material, and the second part that is positioned away from the air bearing surface and that is made of a material with a small value ∈″, which is an imaginary component of permittivity.
摘要翻译：一种热辅助磁头，其包括面向记录介质的空气轴承表面并且在加热记录介质的同时进行磁记录的磁辅助磁头包括：磁记录元件，其包括：一个边缘部分位于空气轴承表面上并产生向磁记录介质传播的磁通量; 配置有光传播的芯的波导和包围，其至少一部分延伸到空气支承表面，围绕芯的周边; 等离子体发生器，其面向芯部的一部分并且延伸到空气轴承表面。等离子体发生器配置有连接的第一部分和第二部分; 位于空气轴承面侧并由高熔点材料制成的第一部分和远离空气轴承表面并由具有小值∈“的材料制成的第二部分，这是介电常数的虚部。

80. 发明授权

US08149546B2 Magnetic field detecting element including tri-layer stack with stepped portion 有权
标题翻译：磁场检测元件包括具有阶梯部分的三层叠层
公开(公告)号：US08149546B2
公开(公告)日：2012-04-03
申请号：US11925030
申请日：2007-10-26
申请人： Toshiyuki Ayukawa , Daisuke Miyauchi , Koji Shimazawa , Takahiko Machita
发明人： Toshiyuki Ayukawa , Daisuke Miyauchi , Koji Shimazawa , Takahiko Machita
IPC分类号： G11B5/39
CPC分类号： G11B5/3932 , B82Y10/00 , B82Y25/00 , G11B2005/3996
摘要： A magnetic field detecting element comprises a stack including upper and lower magnetic layers, and a non-magnetic intermediate layer sandwiched therebetween, wherein magnetization of the magnetic layers changes in accordance with an external magnetic field; upper and lower shield electrode layers sandwiching the stack in a direction of stacking, wherein the upper and lower shield electrode layers supply sense current in the direction of stacking, and magnetically shield the stack; a bias magnetic layer provided on a surface of the stack opposite to an air bearing surface, and wherein the bias magnetic layer applies a bias magnetic field to the upper and lower magnetic layers in a direction perpendicular to the air bearing surface; and insulating layers provided on both sides of the stack in a track width direction thereof, wherein the stack has a stepped portion formed at the non-magnetic intermediate layer.
摘要翻译：磁场检测元件包括包括上下磁性层的堆叠和夹在其间的非磁性中间层，其中磁性层的磁化根据外部磁场而变化; 上下屏蔽电极层沿层叠方向夹着堆叠，其中上下屏蔽电极层在堆叠方向上提供感测电流，并对堆叠进行磁屏蔽; 偏置磁性层，其设置在与空气轴承表面相对的所述堆叠的表面上，并且其中所述偏置磁性层在垂直于所述空气轴承表面的方向上向所述上部和下部磁性层施加偏置磁场; 以及设置在堆叠的轨道宽度方向两侧的绝缘层，其中堆叠具有形成在非磁性中间层的台阶部分。

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