公开(公告)号：US07236335B2

公开(公告)日：2007-06-26

申请号：US10949383

申请日：2004-09-27

申请人： Rachid Sbiaa ,  Isamu Sato

发明人： Rachid Sbiaa ,  Isamu Sato

IPC分类号： G11B5/39

CPC分类号： G11B5/3903

摘要： A magnetoresistive head including a magnetoresistive element, and two shield layers sandwiching the magnetoresistive element. The magnetoresistive element includes an antiferromagnetic layer a pinned layer in exchange coupling with the antiferromagnetic layer, a free layer whose magnetization rotates or switches according to a media magnetic field, and an intermediate layer between the free layer and the pinned layer. The intermediate layer includes magnetic grains surrounded by an insulator. The magnetic grains connect the free layer and the pinned layer by means of a nano contact. The free layer is oversized with respect to the pinned layer and the intermediate layer which are distanced from a media side end of the shield layers.

摘要翻译： 包括磁阻元件的磁阻头和夹着磁阻元件的两个屏蔽层。 磁阻元件包括反铁磁层，与反铁磁层交换耦合的钉扎层，其磁化根据介质磁场旋转或切换的自由层，以及自由层和被钉扎层之间的中间层。 中间层包括被绝缘体包围的磁性颗粒。 磁性颗粒通过纳米接触连接自由层和被钉扎层。 相对于与屏蔽层的介质侧端部分开的被钉扎层和中间层，自由层过大。

公开(公告)号：US07206174B2

公开(公告)日：2007-04-17

申请号：US10882179

申请日：2004-07-02

申请人： Rachid Sbiaa ,  Isamu Sato

发明人： Rachid Sbiaa ,  Isamu Sato

IPC分类号： G11B5/39

CPC分类号： H01L43/08 ,  G11B5/3903 ,  H01L43/12

摘要： A magnetoresistance effect element is manufactured in the steps in which a first ferromagnetic layer is formed on a substrate, the first ferromagnetic layer is patterned to form a pinned layer, in the shape of a strip, having both end portions to which electrode pads are formed, the pinned layer is etched, for example, through ion milling, so as to form at least one nano-contact portion, an insulating layer is formed by embedding an insulating material into the etched pinned layer around the nano-contact portion, a second ferromagnetic layer is formed so as to contact at least the nano-contact portion, and this second ferromagnetic layer is patterned to form a free layer, in shape of strip, having both end portions to which electrode pads are formed.

摘要翻译： 在基板上形成第一铁磁层的步骤中制造磁阻效应元件，第一铁磁层被图案化以形成带状的钉扎层，具有形成电极焊盘的两个端部部分 例如通过离子研磨来蚀刻被钉扎层，以便形成至少一个纳米接触部分，通过将绝缘材料嵌入到围绕纳米接触部分的蚀刻的钉扎层中形成绝缘层，第二 铁磁层形成为至少与纳米接触部分接触，并且该第二铁磁层被图案化以形成带状的自由层，其具有形成有电极焊盘的两个端部。

公开(公告)号：US20070030603A1

公开(公告)日：2007-02-08

申请号：US10572071

申请日：2004-04-02

申请人： Isamu Sato ,  Rachid Sbiaa

发明人： Isamu Sato ,  Rachid Sbiaa

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： B82Y25/00 ,  G01R33/093 ,  G11B5/1278 ,  G11B5/39 ,  Y10T29/49044

摘要： A reader of a magnetoresistive head includes a spin valve with sensor having a stabilizing hard bias and side shield at the side of the sensor, to substantially reduce the undesired flux from adjacent bits and tracks. At least one free layer is spaced apart from at least one pinned layer by a spacer. Above the free layer, a capping layer is provided. The stabilizer may include an insulator, a soft material that is a shielding layer, a decoupling layer, and a hard bias. As a result, the free layer is shielded from the undesired flux of adjacent tracks, and recording media having substantially smaller track size and bit size can be used.

摘要翻译： 磁阻头的读取器包括具有传感器的自旋阀，该传感器在传感器侧面具有稳定的硬偏置和侧屏蔽，以大大减少来自相邻位和轨道的不期望的通量。 至少一个自由层通过间隔物与至少一个钉扎层隔开。 在自由层之上，提供覆盖层。 稳定器可以包括绝缘体，作为屏蔽层的软材料，去耦层和硬偏压。 结果，自由层屏蔽了相邻轨迹的不需要的磁通，并且可以使用具有基本上更小的轨道尺寸和位大小的记录介质。

公开(公告)号：US20060291107A1

公开(公告)日：2006-12-28

申请号：US11157952

申请日：2005-06-22

申请人： Rachid Sbiaa ,  Isamu Sato ,  Haruyuki Morita

发明人： Rachid Sbiaa ,  Isamu Sato ,  Haruyuki Morita

IPC分类号： G11B5/127 ,  G11B5/33

CPC分类号： G01R33/093 ,  G11B5/3932 ,  H01L43/08

摘要： An in-stack bias is provided for stabilizing the free layer of a magneto-resistive sensor. More specifically, a stabilizer layer provided above a free layer has a tilted magnetization. As a result of this tilt, the interlayer coupling between the free layer and the pinned layer is reduced, and the related art hysteresis and asymmetry problems are substantially overcome. Additionally, a method of tilting the stabilizer layer of the in-stack bias is also provided, including a method of annealing using annealing temperature differentials and magnetic field directions.

摘要翻译： 提供堆叠偏压以稳定磁阻传感器的自由层。 更具体地，设置在自由层上方的稳定剂层具有倾斜的磁化强度。 作为这种倾斜的结果，自由层和钉扎层之间的层间耦合被减小，并且基本上克服了现有技术的滞后和不对称问题。 此外，还提供了一种使堆叠偏压的稳定层倾斜的方法，包括使用退火温差和磁场方向进行退火的方法。

公开(公告)号：US20060114619A1

公开(公告)日：2006-06-01

申请号：US10998637

申请日：2004-11-30

申请人： Rachid Sbiaa ,  Isamu Sato ,  Haruyuki Morita

发明人： Rachid Sbiaa ,  Isamu Sato ,  Haruyuki Morita

IPC分类号： G11B5/127 ,  G11B5/33

CPC分类号： H01L43/08 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/1278 ,  G11B5/3909 ,  G11B5/3932 ,  G11B2005/0018 ,  G11B2005/0029 ,  G11B2005/3996

摘要： An in-stack bias is provided for stabilizing the free layer of a ballistic magneto resistive (BMR) sensor. In-stack bias includes a decoupling layer that is a spacer between the free layer and a ferromagnetic stabilizer layer of the in-stack bias, and an anti-ferromagnetic layer positioned above the ferromagnetic layer. The spacer is a nano-contact layer having magnetic particles positioned in a non-magnetic matrix. The free layer may be single layer, composed or synthetic, and the in-stack bias may be laterally bounded by the sidewalls, or alternatively, extend above the sidewalls and spacer. Additionally, a hard bias may also be provided. The spacer of the in-stack bias results in the reduction of the exchange coupling between the free layer and ferromagnetic stabilizing layer, an improved AΔR due to confinement of current flow through a smaller area, and increased MR due to the domain wall created within the magnetic nano-contact.

摘要翻译： 提供堆叠偏压以稳定弹道磁阻（BMR）传感器的自由层。 堆叠内偏压包括去耦层，其是自由层与堆叠内偏压的铁磁稳定层之间的隔离层，以及位于铁磁层上方的反铁磁层。 间隔物是具有位于非磁矩阵中的磁性颗粒的纳米接触层。 自由层可以是单层的，组成的或合成的，叠层间偏压可以由侧壁横向界定，或者替代地在侧壁和间隔物上方延伸。 另外，还可以提供硬偏压。 堆叠偏压的间隔物导致自由层和铁磁稳定层之间的交换耦合的减少，由于电流流过较小区域的限制而导致的改进的ADeltaR以及由于在 磁性纳米接触。

公开(公告)号：US20050068698A1

公开(公告)日：2005-03-31

申请号：US10882338

申请日：2004-07-02

申请人： Isamu Sato ,  Rachid Sbiaa

发明人： Isamu Sato ,  Rachid Sbiaa

IPC分类号： G11B5/127 ,  G11B5/33 ,  G11B5/39 ,  H01F10/32 ,  H01L43/08

CPC分类号： H01L43/08 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3903 ,  H01F10/3254 ,  H01F10/3272

摘要： A magnetoresistance effect element is composed of a substrate, and a layer lamination structure disposed on the substrate and comprising a buffer layer, an anti-ferromagnetic layer, a pinned layer, an insulating layer including at least one nano-contact portion having a dimension of not more than Fermi length, a free layer composed of a ferromagnetic layer and a domain stability layer, which are laminated in the described order on the substrate. The pinned layer is composed of a first ferromagnetic layer, a non-magnetic layer and a second ferromagnetic layer disposed in this order on the side of the anti-ferromagnetic layer, and the domain stability control including a non-magnetic layer, a ferromagnetic layer and an anti-ferromagnetic layer disposed in this order from the side of the free layer.

摘要翻译： 磁阻效应元件由基板和层叠层叠结构构成，该层叠结构设置在基板上，并且包括缓冲层，反铁磁层，被钉扎层，绝缘层，该绝缘层包括至少一个纳米接触部分，其尺寸为 不超过费米长度，由铁磁层和畴稳定层组成的自由层，按照上述顺序层叠在基板上。 被钉扎层由在反铁磁层一侧依次设置的第一铁磁层，非磁性层和第二铁磁层构成，并且域稳定性控制包括非磁性层，铁磁层 以及从自由层一侧依次设置的反铁磁层。

公开(公告)号：US06246552B1

公开(公告)日：2001-06-12

申请号：US09091363

申请日：1998-09-24

申请人： Yoshikazu Soeno ,  Shinji Ichikawa ,  Takamitsu Tsuna ,  Isamu Sato

发明人： Yoshikazu Soeno ,  Shinji Ichikawa ,  Takamitsu Tsuna ,  Isamu Sato

IPC分类号： G11B2110

CPC分类号： G11B5/59627 ,  G11B5/5552 ,  G11B5/58 ,  G11B7/0937 ,  G11B21/10 ,  G11B21/20

摘要： A read/write head includes a slider provided with an electromagnetic transducer element (or an optical module), an actuator, and a suspension. The actuator includes a fixed part, a movable part, and at least two beam members for coupling them together. The beam members have a displacement generating means that elongates and contracts by inverse piezoelectric effect or electrostrictive effect. The fixed part is fixed to the suspension, and the movable part is fixed to the slider. Upon the elongation and contraction of the displacement generator, the displacement generator deflects and the movable part displaces linearly, circularly or rotationally with respect to the fixed part, and the electromagnetic transducer element displaces in a linear or circular orbit, so that the electromagnetic transducer element intersects recording tracks. In the actuator, the fixed part, movable part and beam members are formed as an integrated single piece by providing a hole and/or a cutout in a sheet-like member constructed of a piezoelectric or electrostrictive material. The actuator of the structure illustrated is used for the positioning of a direction intersecting recording tracks. In this case, the total sum of voltages applied on the displacement generating means is controlled in such a manner that it is constant at any time, thereby controlling position fluctuations of the electromagnetic transducer element in the direction vertical to the recording medium surface.

摘要翻译： 读/写头包括设置有电磁换能器元件（或光模块），致动器和悬架的滑块。 致动器包括固定部分，可移动部分和用于将它们联接在一起的至少两个梁部件。 梁构件具有通过反压电效应或电致伸缩效应伸长和收缩的位移产生装置。 固定部固定在悬架上，可动部固定在滑块上。 在位移发生器的伸长和收缩时，位移发生器偏转，并且可移动部分相对于固定部分线性，圆形或旋转地移位，并且电磁换能器元件以线性或圆形轨道移位，使得电磁换能器元件 与录音轨相交。 在致动器中，通过在由压电或电致伸缩材料构成的片状构件中设置孔和/或切口，将固定部件，可动部件和梁部件形成为一体的单件。 所示结构的致动器用于定位与记录轨道相交的方向。 在这种情况下，施加在位移产生装置上的电压的总和以任何时间的方式被控制，由此控制电磁换能器元件在垂直于记录介质表面的方向上的位置波动。

公开(公告)号：US6144529A

公开(公告)日：2000-11-07

申请号：US46790

申请日：1998-03-24

申请人： Yoshimitsu Wada ,  Tetsuya Roppongi ,  Takeshi Wada ,  Isamu Sato

发明人： Yoshimitsu Wada ,  Tetsuya Roppongi ,  Takeshi Wada ,  Isamu Sato

IPC分类号： G11B21/21 ,  G11B5/60

CPC分类号： G11B5/6005

摘要： The present invention is directed to a slider, a head, a head device and a read/write apparatus that are extremely effective for achieving high density writing and an increase in the storage capacity.The slider comprises a front flat surface, a first positive pressure generating portion, a second positive pressure generating portion and a first negative pressure generating portion. The front flat surface, which is provided starting at a leading edge, ends at an intermediate point along a lengthwise direction. The first and second positive pressure generating portions have flat surfaces which are essentially of equal heights and are positioned separated from each other over a distance at two sides in a widthwise direction running perpendicular to a lengthwise direction, with edges at one end located toward the leading edge forming step faces rising up from the front flat surface in a step. The first negative pressure generating portion is provided behind the front flat surface relative to the airflow direction and has a base surface with a height which is lower than the height of the front flat surface.

摘要翻译： 本发明涉及对于实现高密度写入和增加存储容量非常有效的滑块，头，头装置和读/写装置。 滑块包括前平面，第一正压产生部分，第二正压产生部分和第一负压产生部分。 从前缘开始设置的前平面在长度方向的中间点处终止。 第一和第二正压力产生部分具有基本上相同的高度的平坦表面，并且在垂直于长度方向的宽度方向上的两侧彼此隔开一段距离定位，一端的边缘朝向前端 边缘形成步骤在一个步骤中从前平坦表面起升。 第一负压产生部分相对于气流方向设置在前平坦表面的后面，并且具有高度低于前平坦表面的高度的基面。

公开(公告)号：US06144524A

公开(公告)日：2000-11-07

申请号：US287412

申请日：1999-04-07

申请人： Susumu Haratani ,  Tsutomu Aoyama ,  Isamu Sato

发明人： Susumu Haratani ,  Tsutomu Aoyama ,  Isamu Sato

IPC分类号： G01R33/09 ,  G11B5/39 ,  H01F10/32 ,  H01F41/30 ,  H01L43/08 ,  G11B5/127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  G01R33/093 ,  G11B5/3903 ,  H01F10/3268 ,  H01F10/3295 ,  H01F41/302 ,  H01L43/08 ,  G11B2005/3996 ,  G11B5/3932

摘要： A spin valve magnetoresistance device including a free magnetic layer, a pinned magnetic layer, a non-magnetic layer disposed between them and a permanent magnet film defining a track width x(in .mu.m) and configured to control magnetic domains of the free magnetic layer. The product of the residual magnetization (in .mu.emu/cm.sup.3) of the permanent magnet film times the thickness (in cm) thereof is given by f(x):f(x)=-11.24(1/x.sup.2)+A,where x.ltoreq.2 .mu.m, and 670 .mu.emu/cm.sup.2 .ltoreq.A.ltoreq.900 .mu.emu/cm.sup.2.

摘要翻译： 一种自旋阀磁阻器件，包括自由磁性层，钉扎磁性层，设置在它们之间的非磁性层和限定轨道宽度x（μm）的永磁体膜，并且被配置为控制自由磁性层的磁畴 。 永磁体膜的剩余磁化强度乘以其（cm）的厚度乘以f（x）：f（x）= - 11.24（1 / x2）+ A，其中 x <2μm，670μmemu / cm 2 A =900μemu / cm 2。

公开(公告)号：US5169531A

公开(公告)日：1992-12-08

申请号：US729885

申请日：1991-07-11

申请人： Jun Shiraga ,  Isamu Sato

发明人： Jun Shiraga ,  Isamu Sato

IPC分类号： B01D29/11 ,  B01D35/027 ,  B01D35/26 ,  F02M37/10 ,  F02M37/22 ,  B01D35/02

CPC分类号： F02M37/106 ,  B01D29/114 ,  B01D35/0273 ,  B01D35/26 ,  F02M2037/228

摘要： In a fuel filtering device for a fuel pump (6) which is arranged in a liquid fuel tank (1) of vehicles and feeds the liquid fuel to an engine, a noise diffusing member (16, 17, 18) is provided at a suction opening (15a) of the fuel pump, to diffuse a noise, which is emitted out of the fuel pump, toward predetermined directions except a direction toward the bottom of the fuel tank.

摘要翻译： 在布置在车辆的液体燃料箱（1）中并将液体燃料供给发动机的燃料泵（6）的燃料过滤装置中，在吸力处设置噪声扩散部件（16,17,18） 燃料泵的开口（15a）将从燃料泵排出的噪声扩散到朝向燃料箱底部的方向以外的预定方向。