公开(公告)号：US07426096B2

公开(公告)日：2008-09-16

申请号：US10828292

申请日：2004-04-21

申请人： Koji Shimazawa ,  Kosuke Tanaka

发明人： Koji Shimazawa ,  Kosuke Tanaka

IPC分类号： G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3912 ,  G11B5/3967 ,  H01F10/3254 ,  H01F10/3268 ,  H01L43/08

摘要： A first shielding layer and a second shielding layer are disposed by a given distance. An MR film is disposed in between the first shielding layer and the second shielding layer. The first gap film is formed on the MR film with commensurate to the surface configuration thereof. Magnetic domain controlling films are disposed at both sides of the MR film, respectively. Electrode layers are formed on the magnetic domain controlling layers, respectively. One of the second gap layers is located between the MR film; the magnetic domain controlling layers and the first shielding layer, and the other is located between the first gap layer; the electrode layer and the second shielding layer.

摘要翻译： 第一屏蔽层和第二屏蔽层设置一定距离。 MR膜设置在第一屏蔽层和第二屏蔽层之间。 第一间隙膜形成在MR膜上，与其表面形状相称。 磁畴控制膜分别设置在MR膜的两侧。 电极层分别形成在磁畴控制层上。 第二间隙层之一位于MR膜之间; 磁畴控制层和第一屏蔽层，另一个位于第一间隙层之间; 电极层和第二屏蔽层。

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。

公开(公告)号：US08014101B2

公开(公告)日：2011-09-06

申请号：US12003031

申请日：2007-12-19

申请人： Koji Shimazawa ,  Kosuke Tanaka

发明人： Koji Shimazawa ,  Kosuke Tanaka

IPC分类号： G11B5/187

CPC分类号： G11B5/314 ,  G11B7/1387 ,  G11B2005/0021

摘要： A near-field light generator plate 36 of the present invention is arranged to face a medium 10, and one portion 36b and other portion 36a in a medium-facing surface S thereof are made of their respective electroconductive materials different from each other. Since the one portion and the other portion in the medium-facing surface are made of the electroconductive materials different from each other, this medium-facing surface is formed by a surface removing step such as polishing or etching from the medium-facing surface side so that a difference between heights of the one portion and the other portion is readily made based on the difference of the materials.

摘要翻译： 本发明的近场光发生器板36被布置为面向介质10，并且其中的介质表面S中的一个部分36b和其它部分36a由彼此不同的各自的导电材料制成。 由于介质相对表面中的一部分和另一部分由彼此不同的导电材料制成，所以该介质表面通过表面去除步骤形成，例如从介质表面侧抛光或蚀刻，因此 基于材料的差异容易地使一部分和另一部分的高度之间的差异。

公开(公告)号：US20080192376A1

公开(公告)日：2008-08-14

申请号：US11896056

申请日：2007-08-29

申请人： Kosuke Tanaka ,  Koji Shimazawa ,  Takaaki Domon

发明人： Kosuke Tanaka ,  Koji Shimazawa ,  Takaaki Domon

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  G11B5/1278 ,  G11B2005/0021

摘要： A thermally assisted magnetic head has a slider having a medium-facing surface, and a light source unit having a light source support substrate, and a light source disposed on the light source support substrate; the slider has a slider substrate and a magnetic head portion disposed on a side of the medium-facing surface in the slider substrate; the magnetic head portion includes a magnetic recording element and a waveguide for receiving light through an end face opposite to the medium-facing surface, and guiding the light to the medium-facing surface; the light source support substrate is laid on a back surface opposite to the medium-facing surface in the slider substrate so that light emitted from the light source can enter the end face of the waveguide; a non-overlap portion not overlapping with the light source support substrate is formed in the back surface of the slider substrate.

摘要翻译： 热辅助磁头具有具有中等面向表面的滑块和具有光源支撑基板的光源单元和设置在光源支撑基板上的光源; 滑块具有滑动器基板和设置在滑动器基板的介质相对表面侧的磁头部分; 磁头部分包括磁记录元件和波导，用于通过与中间面对面相对的端面接收光，并将光引导到面向介质的表面; 光源支撑基板被放置在与滑动器基板中的面向中间表面相对的背面上，使得从光源发射的光可以进入波导的端面; 在滑块基板的背面形成有与光源支撑基板不重叠的非重叠部分。

公开(公告)号：US07259940B2

公开(公告)日：2007-08-21

申请号：US10889053

申请日：2004-07-13

申请人： Kosuke Tanaka ,  Koji Shimazawa ,  Koichi Terunuma ,  Tomoaki Shimizu

发明人： Kosuke Tanaka ,  Koji Shimazawa ,  Koichi Terunuma ,  Tomoaki Shimizu

IPC分类号： G11B5/33 ,  G11B5/39

CPC分类号： G11B5/3932 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/098 ,  Y10T428/1107 ,  Y10T428/1121

摘要： A pair of domain control layers are disposed on both sides of the track width direction of the MR film so as to be separated from each other such that the MR film is held therebetween, and apply a longitudinal magnetic field to the MR film (free layer). The MR film is flanked by the domain control layers, each including a layer structure constituted by a base layer, a ferromagnetic layer, and a hard magnetic layer. The base layer causes the hard magnetic layer to have a magnetization direction aligning with an in-plane direction, so as to enhance the coercive force of the hard magnetic layer.

摘要翻译： 一对域控制层设置在MR膜的轨道宽度方向的两侧，以便彼此分离，使得MR膜保持在它们之间，并将纵向磁场施加到MR膜（自由层 ）。 MR膜侧面是域控制层，每个层包括由基层，铁磁层和硬磁性层构成的层结构。 基层使得硬磁性层具有与面内方向对准的磁化方向，以增强硬磁性层的矫顽力。

公开(公告)号：US07136263B2

公开(公告)日：2006-11-14

申请号：US10727551

申请日：2003-12-05

申请人： Kosuke Tanaka ,  Koji Shimazawa ,  Koichi Terunuma

发明人： Kosuke Tanaka ,  Koji Shimazawa ,  Koichi Terunuma

IPC分类号： G11B5/127

CPC分类号： G11B5/3906 ,  Y10T29/49052

摘要： A thin-film magnetic head comprises a magnetoresistive film, a pair of magnetic domain control layers for applying a bias magnetic field to the magnetoresistive film, a pair of electrode layers for supplying a current to the magnetoresistive film, first and second shield layers for shielding the magnetoresistive film, a first insulating layer disposed between the magnetoresistive film and magnetic domain control layer and the first shield layer, and a second insulating layer disposed between the magnetoresistive film and electrode layer and the second shield layer. The shield layers have a distance therebetween shorter at a position where the electrode layer and magnetic domain control layer are laminated than that at a position where the magnetoresistive film is located. While the surface of the magnetic domain control layer on the first insulating layer side at the position where the electrode film and magnetic domain control layer are laminated is taken as a reference surface, the distance from the reference surface to the surface of the electrode layer on the second insulating layer side is set shorter than the distance from the reference surface to the surface of the magnetoresistive film on the second insulating layer side.

摘要翻译： 薄膜磁头包括磁阻膜，用于向磁阻膜施加偏置磁场的一对磁畴控制层，用于向磁阻膜提供电流的一对电极层，用于屏蔽的第一和第二屏蔽层 磁阻膜，设置在磁阻膜和磁畴控制层之间的第一绝缘层和第一屏蔽层，以及设置在磁阻膜与电极层和第二屏蔽层之间的第二绝缘层。 在层叠电极层和磁畴控制层的位置上，屏蔽层的距离比在磁阻膜位置处的屏蔽层之间的距离更短。 将层叠有电极膜和磁畴控制层的位置上的第一绝缘层侧的磁畴控制层的表面作为基准面，从基准面到电极层的表面的距离 第二绝缘层侧被设定为比从第二绝缘层侧的磁阻膜的基准面到表面的距离短。

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。

公开(公告)号：US08248895B2

公开(公告)日：2012-08-21

申请号：US12726981

申请日：2010-03-18

申请人： Koji Shimazawa ,  Yoshihiro Tsuchiya ,  Seiichi Takayama ,  Nobuyuki Mori ,  Yasuhiro Ito ,  Kosuke Tanaka ,  Osamu Shindo ,  Ryuji Fujii ,  Takashi Honda ,  Yoshitaka Sasaki

发明人： Koji Shimazawa ,  Yoshihiro Tsuchiya ,  Seiichi Takayama ,  Nobuyuki Mori ,  Yasuhiro Ito ,  Kosuke Tanaka ,  Osamu Shindo ,  Ryuji Fujii ,  Takashi Honda ,  Yoshitaka Sasaki

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/105 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

摘要： A method for manufacturing a thermally-assisted magnetic recording head is provided, in which a light source unit including a light source and a slider including an optical system are bonded. A unit substrate is made of a material transmitting light having a predetermined wavelength, and an adhesion material layer is formed on the light source unit and/or the slider. The manufacturing method includes: aligning the light source unit and the slider in such a way that a light from the light source can enter the optical system and the adhesion material layer is sandwiched therebetween; irradiating the adhesion material layer with a light including the predetermined wavelength through the unit substrate; and bonding them. The adhesion material layer melted by the light including the predetermined wavelength and transmitted through the unit substrate can ensure high alignment accuracy as well as higher bonding strength and less change with time.

摘要翻译： 提供了一种用于制造热辅助磁记录头的方法，其中包括光源和包括光学系统的滑块的光源单元被结合。 单位基板由透射具有预定波长的光的材料制成，并且在光源单元和/或滑块上形成粘合材料层。 该制造方法包括：将光源单元和滑块对准，使得来自光源的光能够进入光学系统，并且粘合材料层夹在其间; 用包含所述预定波长的光通过所述单元基板照射所述粘附材料层; 并粘合它们。 由包含预定波长并透过单元基板的光熔化的粘合材料层可以确保高对准精度以及更高的粘接强度和随时间变化的变化。

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。

公开(公告)号：US08023226B2

公开(公告)日：2011-09-20

申请号：US12182744

申请日：2008-07-30

申请人： Koji Shimazawa ,  Kosuke Tanaka

发明人： Koji Shimazawa ,  Kosuke Tanaka

IPC分类号： G11B11/105

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

摘要： A thermally assisted magnetic head comprises a slider having a medium-opposing surface and a light source unit secured to a surface of the slider on the side of the slider opposite from the medium-opposing surface. The slider has a slider substrate and a magnetic head part provided on a side face of the medium-opposing surface in the slider substrate. The magnetic head part includes a magnetic recording device for generating a magnetic field and a waveguide for receiving light from an end face opposite from the medium-opposing surface and guiding the light to the medium-opposing surface side. The light source unit has a light source supporting substrate, a light source secured to the light source supporting substrate and adapted to supply light to the end face of the waveguide, and a temperature sensor for measuring the temperature of the light source.

摘要翻译： 热辅助磁头包括具有介质相对表面的滑块和固定到滑块的与介质相对表面相反侧的表面的光源单元。 滑块具有滑动器基板和设置在滑动器基板中的介质相对表面的侧面上的磁头部分。 磁头部分包括用于产生磁场的磁记录装置和用于从与介质相对表面相对的端面接收光并将光引导到介质相对表面侧的波导。 光源单元具有光源支撑基板，固定在光源支撑基板上的光源，用于向波导管的端面供给光，以及温度传感器，用于测量光源的温度。