专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明授权

US07805828B2 Method of manufacturing thin-film magnetic head 有权
标题翻译：制造薄膜磁头的方法
公开(公告)号：US07805828B2
公开(公告)日：2010-10-05
申请号：US11752888
申请日：2007-05-23
申请人： Koji Shimazawa , Yoshihiro Tsuchiya
发明人： Koji Shimazawa , Yoshihiro Tsuchiya
IPC分类号： G11B5/187 , C21D1/04
CPC分类号： G11B5/3912 , G11B5/3932 , Y10T29/49021 , Y10T29/49032 , Y10T29/49034 , Y10T29/49044 , Y10T428/1107
摘要： A method of manufacturing a thin-film magnetic head including forming the first shield layer; forming the magnetoresistive device, carried out after forming the first shield layer, a heat treatment providing exchange coupling between the ferromagnetic layer and the antiferromagnetic layer so as to magnetize the ferromagnetic layer in a predetermined direction; forming the domain control layer so as to hold the magnetoresistive device in a track width direction; magnetizing the domain control layer in a direction yielding a magnetic field in the same direction as with a magnetic field received by the ferromagnetic layer upon exchange-coupling with the antiferromagnetic layer, forming the second shield layer, carried out after magnetizing the domain control layer, and remagnetizing the domain control layer in a direction yielding the longitudinal bias magnetic field, carried out after forming the second shield layer.
摘要翻译：一种制造薄膜磁头的方法，包括形成第一屏蔽层; 形成所述磁阻器件，在形成所述第一屏蔽层之后进行的热处理，提供所述铁磁层与所述反铁磁层之间的交换耦合，以便沿预定方向磁化所述铁磁层; 形成所述域控制层，以将所述磁阻器件保持在轨道宽度方向; 在与反铁磁层交换耦合时由铁磁层接收的磁场沿与所述磁场相同的方向产生磁场的方向磁化畴控制层，形成在磁化控制层之后进行的第二屏蔽层，并且在形成第二屏蔽层之后进行的产生纵向偏置磁场的方向使磁畴控制层再磁化。

92. 发明申请

US20100103562A1 Magnetoresistive element including a pair of ferromagnetic layers coupled to a pair of shield layers 有权
标题翻译：磁阻元件包括耦合到一对屏蔽层的一对铁磁层
公开(公告)号：US20100103562A1
公开(公告)日：2010-04-29
申请号：US12289401
申请日：2008-10-27
申请人： Takahiko Machita , Daisuke Miyauchi , Yoshihiro Tsuchiya , Tsutomu Chou , Shinji Hara , Koji Shimazawa
发明人： Takahiko Machita , Daisuke Miyauchi , Yoshihiro Tsuchiya , Tsutomu Chou , Shinji Hara , Koji Shimazawa
IPC分类号： G11B5/33
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3912 , G11B2005/3996
摘要： A magnetoresistive element includes a pair of shield portions, and an MR stack and a bias magnetic field applying layer that are disposed between the pair of shield portions. The shield portions respectively include single magnetic domain portions. The MR stack includes a pair of ferromagnetic layers magnetically coupled to the pair of single magnetic domain portions, and a spacer layer disposed between the pair of ferromagnetic layers. The MR stack has a front end face, a rear end face and two side surfaces. The magnetoresistive element further includes two flux guide layers disposed between the pair of single magnetic domain portions and respectively adjacent to the two side surfaces of the MR stack. Each of the two flux guide layers has a front end face and a rear end face. The bias magnetic field applying layer has a front end face that faces the rear end face of the MR stack and the respective rear end faces of the two flux guide layers.
摘要翻译：磁阻元件包括一对屏蔽部分，以及设置在该对屏蔽部分之间的MR堆叠和偏置磁场施加层。屏蔽部分别包括单个磁畴部分。 MR堆叠包括磁耦合到该对单个磁畴部分的一对铁磁层，以及设置在该对铁磁层之间的间隔层。 MR堆叠具有前端面，后端面和两个侧面。磁阻元件还包括设置在一对单磁畴部分之间并且分别邻近MR堆叠的两个侧表面的两个磁通引导层。两个磁通导向层中的每一个具有前端面和后端面。偏置磁场施加层具有面向MR堆叠的后端面的前端面和两个导流层的各个后端面。

93. 发明申请

US20060028773A1 Magnetoresistive device, thin film magnetic head, head gimbal assembly, head arm assembly, magnetic disk drive and method of drive magnetoresistive device 有权
标题翻译：磁阻装置，薄膜磁头，头万向架组件，头臂组件，磁盘驱动器及驱动磁阻装置的方法
公开(公告)号：US20060028773A1
公开(公告)日：2006-02-09
申请号：US11023505
申请日：2004-12-29
申请人： Koji Shimazawa , Yoshihiro Tsuchiya , Kenji Inage
发明人： Koji Shimazawa , Yoshihiro Tsuchiya , Kenji Inage
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/3903
摘要： Provided is a magnetoresistive device capable of stably maintaining sufficient output characteristics even under a higher temperature environment while responding to a demand for a higher recording density. The magnetoresistive device comprises an MR film including a fixing layer made of IrMn, an outer pinned layer of which the magnetization direction is fixed in a +Y direction by the fixing layer, and an inner pinned layer of which the magnetization direction is fixed in a −Y direction by the fixing layer, a pair of conductive lead layers and a constant current circuit which flows a sense current in a +X direction so as to generate a current magnetic field toward a −Y direction in the inner pinned layer, and in the magnetoresistive device, a conditional expression (1) is satisfied. Thereby, the magnetization directions of the outer pinned layer and the inner pinned layer can be stabilized, so even under a high temperature environment, the magnetoresistive device can obtain stable output characteristics, and can respond to a demand for a higher recording density.
摘要翻译：提供了一种即使在较高温度环境下也能够稳定地保持足够的输出特性并且响应于更高记录密度的需求的磁阻器件。磁阻器件包括MR膜，其包括由IrMn制成的固定层，通过固定层将磁化方向固定在+ Y方向上的外部钉扎层，以及将磁化方向固定在其中的内部钉扎层 -Y方向，一对导电引线层和恒流电路，其在+ X方向上流过感测电流，以便在内部被钉扎层中朝向-Y方向产生电流磁场，并且在磁阻器件，条件式（1）被满足。由此，外部被钉扎层和内部被钉扎层的磁化方向可以稳定，因此即使在高温环境下，磁阻器件也能够得到稳定的输出特性，能够满足更高记录密度的要求。

94. 发明授权

US06982855B2 Magnetoresistive head having layer structure between free and lead layers with layer structure including fixed magnetization layer 失效
标题翻译：磁阻头具有在自由层和引线层之间的层结构，层结构包括固定的磁化层
公开(公告)号：US06982855B2
公开(公告)日：2006-01-03
申请号：US10435059
申请日：2003-05-12
申请人： Koji Shimazawa , Yoshihiro Tsuchiya , Koichi Terunuma
发明人： Koji Shimazawa , Yoshihiro Tsuchiya , Koichi Terunuma
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3967 , G11B5/455 , G11B2005/3996 , Y10T29/49052
摘要： An MR element includes a free layer. Hard magnetic layers are placed on both sides of the MR element and apply a bias magnetic field to the free layer. A pair of electrode layers are placed as spaced from each other, and supplies a sense current to the free layer. Layer structures are placed between portions overlapping with the respective electrode layers in the ambilateral regions of the free layer, and the electrode layers. Each layer structure includes a nonmagnetic layer, a ferromagnetic layer, and an antiferromagnetic layer. A direction of magnetization of the ferromagnetic layer is fixed by the antiferromagnetic layer, and a magnetic thickness of the ferromagnetic layer is set greater than that of the free layer.
摘要翻译： MR元件包括自由层。将硬磁性层放置在MR元件的两侧并向自由层施加偏置磁场。一对电极层被放置成彼此间隔开，并且向自由层提供感测电流。层结构放置在与自由层的双侧区域中的各个电极层重叠的部分和电极层之间。每个层结构包括非磁性层，铁磁层和反铁磁层。铁磁层的磁化方向由反铁磁层固定，铁磁层的磁性厚度设定为大于自由层的厚度。

95. 发明申请

US20050028352A1 Method of manufacturing thin-film magnetic head 审中-公开
标题翻译：制造薄膜磁头的方法
公开(公告)号：US20050028352A1
公开(公告)日：2005-02-10
申请号：US10902056
申请日：2004-07-30
申请人： Koji Shimazawa , Yoshihiro Tsuchiya
发明人： Koji Shimazawa , Yoshihiro Tsuchiya
IPC分类号： G11B5/39 , G11B5/127
CPC分类号： G11B5/3912 , G11B5/3932 , Y10T29/49021 , Y10T29/49032 , Y10T29/49034 , Y10T29/49044 , Y10T428/1107
摘要： A lower shield layer is formed (S101). Subsequently, an MR device is formed (S103), and pinning/annealing is carried out (S105). The pinning/annealing provides exchange coupling between an antiferromagnetic layer and a pinned layer. Then, a domain control layer and electrode layers are formed (S107), and an upper shield layer is formed (S109). Thereafter, the domain control layer is magnetized in a direction yielding a longitudinal bias magnetic field (S111). Next, a recording head part is formed (S113). Then, a support in which a plurality of thin-film magnetic heads are formed so as to be arranged in a matrix is cut into a plurality of bars each comprising a plurality of thin-film magnetic heads arranged integrally (S115).
摘要翻译：形成下屏蔽层（S101）。随后，形成MR器件（S103），进行钉扎/退火（S105）。钉扎/退火提供了反铁磁层和钉扎层之间的交换耦合。然后，形成畴控制层和电极层（S107），形成上屏蔽层（S109）。此后，域控制层沿产生纵向偏置磁场的方向磁化（S111）。接下来，形成记录头部（S113）。然后，将多个形成为矩阵状的薄膜磁头的支撑体切割成多个条，每个条包括一体地排列的多个薄膜磁头（S115）。

96. 发明申请

US20050018367A1 Thin film magnetic head, head gimbal assembly, and hard disk drive 失效
标题翻译：薄膜磁头，头万向节装配和硬盘驱动器
公开(公告)号：US20050018367A1
公开(公告)日：2005-01-27
申请号：US10833162
申请日：2004-04-28
申请人： Koichi Terunuma , Koji Shimazawa , Yoshihiro Tsuchiya
发明人： Koichi Terunuma , Koji Shimazawa , Yoshihiro Tsuchiya
IPC分类号： G01R33/09 , G11B5/31 , G11B5/39 , H01F10/30 , H01F10/32 , H01L43/08 , G11B5/33 , G11B5/127
CPC分类号： G11B5/31 , Y10T29/49041 , Y10T29/49046
摘要： A longitudinal bias magnetic field control layer is provided for applying to a soft magnetic layer a counter bias magnetic field that is antiparallel (in opposite direction) to a longitudinal bias magnetic field. A magnitude of the counter bias magnetic field applied to the soft magnetic layer by the longitudinal bias magnetic field control layer is set smaller than that of the longitudinal bias magnetic field at a track center portion of the soft magnetic layer applied by a pair of bias magnetic field applying layers. Through subtraction between the longitudinal bias magnetic field and the counter bias magnetic field, a substantial longitudinal bias magnetic field is substantially applied to the soft magnetic layer in the same direction as that of the longitudinal bias magnetic field, and a magnitude of the substantial longitudinal bias magnetic field is maximum at both end portions of the soft magnetic layer and is weakened at the center portion of the soft magnetic layer. By reducing the magnitude of the longitudinal bias magnetic field applied to the soft magnetic layer at the track center portion thereof, sensitivity of the soft magnetic layer can be maintained or improved even if the reproduction track width is extremely narrowed.
摘要翻译：提供纵向偏置磁场控制层，以向软磁层施加与纵向偏置磁场反平行（相反方向）的反偏磁场。通过纵向偏置磁场控制层施加到软磁性层的反向偏置磁场的大小被设定为小于通过一对偏置磁铁施加的软磁性层的轨道中心部分处的纵向偏置磁场的大小场施加层。通过在纵向偏置磁场和反向偏置磁场之间的减法，基本的纵向偏置磁场基本上以与纵向偏置磁场相同的方向施加到软磁性层，并且基本纵向偏置的幅度在软磁性层的两端部的磁场最大，在软磁性层的中心部分变薄。通过减小在磁道中心部分施加到软磁性层的纵向偏置磁场的大小，即使再现轨迹宽度非常窄，可以保持或改善软磁性层的灵敏度。

97. 发明授权

US08427927B1 Thermally-assisted magnetic recording head, head gimbals assembly, head arm assembly, and magnetic disk unit 有权
标题翻译：热辅助磁记录头，头架万向节组件，头臂组件和磁盘单元
公开(公告)号：US08427927B1
公开(公告)日：2013-04-23
申请号：US13370982
申请日：2012-02-10
申请人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi
发明人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0021
摘要： The thermally-assisted magnetic recording head includes: a magnetic pole; a waveguide allowing a transverse-electric (TE) wave oscillating in a cross-track direction to propagate toward an air bearing surface; and a plasmon generator having a tip portion near the air bearing surface, the tip portion being provided to overlap, in a down-track direction, with both the magnetic pole and the waveguide, and having a quadrangular cross-section substantially parallel to the air bearing surface.
摘要翻译：热辅助磁记录头包括：磁极; 允许在横向轨道方向上振荡的横向电（TE）波向空气轴承表面传播的波导; 以及等离子体发生器，其具有靠近所述空气支承表面的尖端部分，所述尖端部分被设置为沿着磁道和所述波导两者的向下轨道方向重叠，并且具有基本上平行于所述空气的四边形横截面承载面。

98. 发明授权

US08374061B2 Thermally-assisted magnetic recording head capable of reducing the number of binding wires 有权
标题翻译：热辅助磁记录头，能够减少装订线的数量
公开(公告)号：US08374061B2
公开(公告)日：2013-02-12
申请号：US12190381
申请日：2008-08-12
申请人： Kosuke Tanaka , Koji Shimazawa , Yasuhiro Ito
发明人： Kosuke Tanaka , Koji Shimazawa , Yasuhiro Ito
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/02 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： A slider has a slider substrate, an electromagnetic transducer, a waveguide for receiving light from a surface on the side opposite from a medium-opposing surface and guiding the light to the medium-opposing surface side, and a device electrode electrically connected to the electromagnetic transducer. A light source unit includes a light source supporting substrate, a light source, and a lead extending from the slider side to the side opposite from the slider and having both end parts exposed at a surface of the light source unit. The device electrode of the slider is exposed at the surface of the slider on the side opposite from the medium-opposing surface without being covered with the light source unit. An end part on the slider side of the lead of the light source unit is soldered to the device electrode of the slider.
摘要翻译：滑块具有滑块基板，电磁换能器，用于从与介质相对表面相对的一侧上的表面接收光并将光引导到介质相对表面侧的波导，以及电连接到电磁传感器。光源单元包括光源支撑基板，光源和从滑块侧延伸到与滑块相对的一侧的引线，并且两端部露出在光源单元的表面。滑块的器件电极在与中间相对表面相对的一侧的滑块的表面处被暴露，而不被光源单元覆盖。将光源单元的引线的滑块侧的端部焊接到滑块的器件电极。

99. 发明授权

US08363515B1 Thermally-assisted magnetic recording head, head gimbals assembly, head arm assembly, and magnetic disk unit 有权
标题翻译：热辅助磁记录头，头架万向节组件，头臂组件和磁盘单元
公开(公告)号：US08363515B1
公开(公告)日：2013-01-29
申请号：US13397041
申请日：2012-02-15
申请人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi , Kosuke Tanaka
发明人： Tsutomu Chou , Koji Shimazawa , Shinji Hara , Eiji Komura , Ryo Hosoi , Kosuke Tanaka
IPC分类号： G11B11/00
CPC分类号： G11B5/6088 , G11B5/314 , G11B2005/0021
摘要： The thermally-assisted magnetic recording head includes: a magnetic pole; a waveguide propagating light in a first direction, the first direction intersecting with an air bearing surface; a plasmon generator having a base and a projection, the base having a surface, and the projection having a top, standing partially on the surface of the base and extending in the first direction. The plasmon generator has a first portion and a second portion, and the first portion and the second portion are provided in this order from the air bearing surface in a direction away from the air bearing surface. Herein, the top of the projection and the surface of the base in the first portion define a first step, and the top of the projection and the surface of the base in the second portion define a second step. The first step is larger than the second step.
摘要翻译：热辅助磁记录头包括：磁极; 波导在第一方向传播光，所述第一方向与空气轴承表面相交; 具有基部和突起的等离子体发生器，所述基部具有表面，并且所述突起具有顶部，部分地位于所述基部的所述表面上并沿所述第一方向延伸。等离子体发生器具有第一部分和第二部分，并且第一部分和第二部分沿着远离空气支承表面的方向从空气轴承表面依次设置。这里，突起的顶部和第一部分中的基部的表面限定第一步骤，并且突起的顶部和第二部分中的基部的表面限定第二步骤。第一步大于第二步。

100. 发明授权

US08325568B2 Thermally-assisted magnetic recording head comprising characteristic clads 有权
标题翻译：包括特征包层的热辅助磁记录头
公开(公告)号：US08325568B2
公开(公告)日：2012-12-04
申请号：US12848422
申请日：2010-08-02
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a thermally-assisted magnetic recording head with improved light density of near-field light (NF-light) with which a medium is irradiated. The head comprises: a magnetic pole; a waveguide for propagating light for exciting surface plasmon; a surface plasmon generator provided between the magnetic pole and the waveguide, coupled with the light in a surface plasmon mode, and emitting NF-light; and a clad portion provided at least between the waveguide and the surface plasmon generator and comprising a transition region in which a refractive index decreases along a direction from the waveguide toward the magnetic pole. The provision of the clad portion including the transition region enables improvement of the light density of NF-light due to the convergence of surface plasmon excited in the surface plasmon generator to predetermined locations, while avoiding the problem of temperature rise due to reduction of the volume of surface plasmon generator.
摘要翻译：提供了一种具有改善的照射介质的近场光（NF光）的光密度的热辅助磁记录头。磁头包括：磁极; 用于传播激发表面等离子体激元的光的波导; 设置在磁极和波导之间的表面等离子体发生器，与表面等离子体模式的光耦合，并发射NF光; 以及至少在波导管和表面等离子体激元发生器之间设置的包层部分，并且包括其中折射率沿着从波导到磁极的方向减小的过渡区域。提供包括过渡区域的包层部分能够改善由于表面等离子体发生器中激发的表面等离子激元的会聚而导致的NF光的光密度到预定位置，同时避免了由于体积的减小导致的温度上升的问题的表面等离子体发生器。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式