公开(公告)号：US20070035887A1

公开(公告)日：2007-02-15

申请号：US11204452

申请日：2005-08-15

申请人： James Freitag ,  Kuok Ho ,  Mustafa Pinarbasi ,  Ching Tsang

发明人： James Freitag ,  Kuok Ho ,  Mustafa Pinarbasi ,  Ching Tsang

IPC分类号： G11B5/33

CPC分类号： G11B5/3906 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/398

摘要： A magnetoresistive sensor having a pinned layer that extends beyond the stripe height defined by the free layer of the sensor. The extended pinned layer has a strong shape induced anisotropy that maintains pinning of the pinned layer moment. The extended portion of the pinned layer has sides beyond the stripe height that are perfectly aligned with the sides of the sensor within the stripe height. This perfect alignment is made possible by a manufacturing method that uses a mask structure for more than one manufacturing phase, eliminating the need for multiple mask alignments.

摘要翻译： 磁阻传感器具有延伸超过由传感器的自由层限定的条纹高度的钉扎层。 延伸的钉扎层具有强烈的形状诱导的各向异性，保持钉扎层力矩的钉扎。 被钉扎层的延伸部分具有超过条带高度的侧面，其在条纹高度内完全与传感器的侧面对准。 通过使用掩模结构用于多于一个制造阶段的制造方法，可以实现这种完美的对准，从而消除了对多个掩模对准的需要。

公开(公告)号：US20070127167A1

公开(公告)日：2007-06-07

申请号：US11297151

申请日：2005-12-07

申请人： James Freitag ,  Kuok Ho ,  Mustafa Pinarbasi ,  Ching Tsang

发明人： James Freitag ,  Kuok Ho ,  Mustafa Pinarbasi ,  Ching Tsang

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： B82Y25/00 ,  G01R33/093 ,  G11B5/3163 ,  G11B5/3906 ,  G11B5/398

摘要： A magnetoresistive sensor having a lead overlay defined trackwidth and a pinned layer that extends beyond the stripe height defined by the free layer of the sensor. The extended pinned layer has a strong shape induced anisotropy that maintains pinning of the pinned layer moment. The extended portion of the pinned layer has sides beyond the stripe height that are perfectly aligned with the sides of the sensor within the stripe height. This perfect alignment is made possible by a manufacturing method that uses a mask structure for more than one manufacturing phase, eliminating the need for multiple mask alignments. The lead overlay design allows narrow, accurate trackwidth definition.

摘要翻译： 磁阻传感器具有引线覆盖层限定的轨道宽度和延伸超过由传感器的自由层限定的条带高度的钉扎层。 延伸的钉扎层具有强烈的形状诱导的各向异性，保持钉扎层力矩的钉扎。 被钉扎层的延伸部分具有超过条带高度的侧面，其在条纹高度内完全与传感器的侧面对准。 通过使用掩模结构用于多于一个制造阶段的制造方法，可以实现这种完美的对准，从而消除了对多个掩模对准的需要。 引线覆盖设计允许窄的，准确的轨道宽度定义。

公开(公告)号：US20070133133A1

公开(公告)日：2007-06-14

申请号：US11304219

申请日：2005-12-14

申请人： James Freitag ,  Kuok Ho ,  Mustafa Pinarbasi ,  Ching Tsang

发明人： James Freitag ,  Kuok Ho ,  Mustafa Pinarbasi ,  Ching Tsang

IPC分类号： G11B5/127

CPC分类号： G11B5/398 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3932 ,  H01L43/08

摘要： A magnetoresistive sensor having an in stack bias structure and a pinned layer having shape enhanced anisotropy. The sensor may be a partial mill design wherein the track width of the sensor is defined by the width of the free layer and the pinned layers extend beyond the trackwidth of the sensor. The sensor has an active area defined by the stripe height of the free layer. The pinned layer extends beyond the stripe height defined by the free layer, thus providing the pinned layer with the shape enhanced anisotropy. The pinned layer structure can be pinned by exchange coupling with a layer of antiferromagnetic material (AFM) layer, with pinning robustness being improved by the shape enhanced anisotropy, or can be a self pinned structure which is pinned by a combination of magnetostriction, AP coupling and shape enhanced anisostropy.

摘要翻译： 具有堆叠偏压结构的磁阻传感器和具有形状增强的各向异性的钉扎层。 传感器可以是部分磨机设计，其中传感器的轨道宽度由自由层的宽度限定，并且被钉扎层延伸超过传感器的轨道宽度。 传感器具有由自由层的条纹高度限定的有效区域。 钉扎层延伸超过由自由层限定的条纹高度，从而为钉扎层提供形状增强的各向异性。 钉扎层结构可以通过与反铁磁性材料（AFM）层的交换耦合来固定，其钉扎鲁棒性通过形状增强的各向异性而改善，或者可以是通过磁致伸缩，AP耦合的组合固定的自固定结构 和形状增强的不确定度。

公开(公告)号：US20070086122A1

公开(公告)日：2007-04-19

申请号：US11254349

申请日：2005-10-19

申请人： James Freitag ,  Kuok Ho ,  Mustafa Pinarbasi ,  Ching Tsang

发明人： James Freitag ,  Kuok Ho ,  Mustafa Pinarbasi ,  Ching Tsang

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： G11B5/3932 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3912 ,  G11B2005/3996

摘要： A current perpendicular to plane (CPP) magnetoresistive sensor having a track width that is defined by an area of contact with a shield/lead. The sensor includes a sensor stack having a width W1. A current path defining insulation layer formed over the sensor stack has an opening with a width W2 that is significantly smaller than the width W1 of the sensor stack. A shield/lead extends into the opening in the insulation layer to contact a surface of the sensor stack. This area of contact between the shield/lead and the surface of the sensor stack defines an active area of the sensor having a width of substantially W2. The edges of the sensor stack, which may have compromised magnetic properties due to the formation of the sensor stack are advantageously removed from the active area of the senor. Furthermore, the edges of the free layer, which may be pinned by the hard bias layers are also advantageously removed from the active area of the sensor.

摘要翻译： 垂直于平面（CPP）磁阻传感器的电流具有由与屏蔽/引线接触的区域限定的轨道宽度。 传感器包括具有宽度W 1的传感器堆叠。 形成在传感器堆叠上的绝缘层的电流路径具有宽度W 2的开口，该宽度明显小于传感器堆叠的宽度W 1。 屏蔽/引线延伸到绝缘层中的开口中以接触传感器堆叠的表面。 屏蔽/引线与传感器组件表面之间的该接触区域限定了传感器的有效区域，其宽度基本为W 2。 传感器堆叠的边缘可能由于传感器堆叠的形成而损害了磁性能，有利地从传感器的有效区域中移除。 此外，还可以有利地从传感器的有效区域去除可由硬偏置层固定的自由层的边缘。

公开(公告)号：US20070035891A1

公开(公告)日：2007-02-15

申请号：US11204973

申请日：2005-08-15

申请人： James Freitag ,  Kuok Ho ,  Mustafa Pinarbasi ,  Ching Tsang

发明人： James Freitag ,  Kuok Ho ,  Mustafa Pinarbasi ,  Ching Tsang

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： G01R33/093 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3906 ,  G11B2005/3996

摘要： A magnetoresistive sensor having a pinned layer that extends beyond the stripe height defined by the free layer of the sensor. The extended pinned layer has a strong shape induced anisotropy that maintains pinning of the pinned layer moment. The extended portion of the pinned layer has sides beyond the stripe height that are perfectly aligned with the sides of the sensor within the stripe height. This perfect alignment is made possible by a manufacturing method that uses a mask structure for more than one manufacturing phase, eliminating the need for multiple mask alignments.

摘要翻译： 磁阻传感器具有延伸超过由传感器的自由层限定的条纹高度的钉扎层。 延伸的钉扎层具有强烈的形状诱导的各向异性，保持钉扎层力矩的钉扎。 被钉扎层的延伸部分具有超过条带高度的侧面，其在条纹高度内完全与传感器的侧面对准。 通过使用掩模结构用于多于一个制造阶段的制造方法，可以实现这种完美的对准，从而消除了对多个掩模对准的需要。

公开(公告)号：US20060082932A1

公开(公告)日：2006-04-20

申请号：US11292157

申请日：2005-12-01

申请人： Marie-Claire Cyrille ,  Frederick Dill ,  Kuok Ho ,  Jui-Lung Li ,  Scott MacDonald ,  James Nix ,  Ching Tsang

发明人： Marie-Claire Cyrille ,  Frederick Dill ,  Kuok Ho ,  Jui-Lung Li ,  Scott MacDonald ,  James Nix ,  Ching Tsang

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： G11B5/313 ,  Y10T29/49048

摘要： A read head has a bottom lead made of material that is relatively polish resistant and a top lead layer that polishes down more easily than the bottom layer. With this structure, when the layers are deposited and then polished down, the top layer recesses away from the sensor (and bottom lead layer) in a controlled fashion, providing an acceptable lead structure that reduces the mismatch between the read head physical read width and magnetic read width.

摘要翻译： 读头具有由相对耐光的材料制成的底部引线和比底层更容易抛光的顶部引线层。 利用这种结构，当层沉积然后被抛光时，顶层以受控的方式远离传感器（和底部引线层），提供可接受的引线结构，其减小了读取头物理读取宽度和 磁读宽度。

公开(公告)号：US20050024782A1

公开(公告)日：2005-02-03

申请号：US10629513

申请日：2003-07-29

申请人： Marie-Claire Cyrille ,  Frederick Dill ,  Kuok Ho ,  Jui-Lung Li ,  Scott MacDonald ,  James Nix ,  Ching Tsang

发明人： Marie-Claire Cyrille ,  Frederick Dill ,  Kuok Ho ,  Jui-Lung Li ,  Scott MacDonald ,  James Nix ,  Ching Tsang

IPC分类号： G11B5/31 ,  G11B5/39

CPC分类号： G11B5/313 ,  Y10T29/49048

摘要： A read head has a bottom lead made of material that is relatively polish resistant and a top lead layer that polishes down more easily than the bottom layer. With this structure, when the layers are deposited and then polished down, the top layer recesses away from the sensor (and bottom lead layer) in a controlled fashion, providing an acceptable lead structure that reduces the mismatch between the read head physical read width and magnetic read width.

公开(公告)号：US20060092565A1

公开(公告)日：2006-05-04

申请号：US10976479

申请日：2004-10-29

申请人： Kuok Ho ,  Yimin Hsu ,  Ching Tsang

发明人： Kuok Ho ,  Yimin Hsu ,  Ching Tsang

IPC分类号： G11B5/147

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/398

摘要： A magnetic structure for use in a magnetic head for avoiding stray field writing. The magnetic structure can be for example a magnetic shield or could be a magnetic pole of a write head and is particularly advantageous for use in a perpendicular recording system, because such perpendicular recording systems are especially susceptible to stray field writing. The magnetic structure includes a forward protruding portion that extends toward the air bearing surface (ABS) of the head also includes first and second wing portions that extend laterally from the forward protruding portion. The wing portions each have a front edge that is recessed from the ABS. The wings are tapered so that the amount of recess of the front edge of the wings increases with lateral distance from the center of the magnetic structure.

摘要翻译： 用于磁头的磁结构，用于避免杂散场写入。 磁性结构可以是例如磁屏蔽或者可以是写入磁头的磁极，并且对于在垂直记录系统中使用是特别有利的，因为这样的垂直记录系统特别容易受到杂散磁场写入的影响。 磁性结构包括朝向头部的空气支承表面（ABS）延伸的向前突出部分还包括从前突出部分横向延伸的第一和第二翼部分。 翼部各自具有从ABS凹入的前边缘。 翅膀是锥形的，使得翼的前边缘的凹部的数量随着与磁性结构的中心的横向距离而增加。

公开(公告)号：US20050180061A1

公开(公告)日：2005-08-18

申请号：US10781548

申请日：2004-02-18

申请人： Meng Ding ,  Robert Fontana ,  Kuok Ho ,  Neil Robertson ,  Ching Tsang

发明人： Meng Ding ,  Robert Fontana ,  Kuok Ho ,  Neil Robertson ,  Ching Tsang

IPC分类号： G01R33/09 ,  G11B5/39 ,  H01L43/08 ,  G11B5/33 ,  G11B5/127

CPC分类号： B82Y25/00 ,  G01R33/093 ,  G11B5/3912

摘要： A self pinned magnetoresistive sensor that has a relatively thick compressive material at either side to assist with self pinning. A shield having recessed portions at either side of the sensor area allows room for a thicker compressive layer than would otherwise be possible.

摘要翻译： 自固定磁阻传感器，在任一侧具有相对较厚的压缩材料以辅助自锁。 在传感器区域的任一侧具有凹入部分的屏蔽件允许比否则可能的空间更厚的压缩层。

公开(公告)号：US20060092566A1

公开(公告)日：2006-05-04

申请号：US10977446

申请日：2004-10-29

申请人： Kuok Ho ,  Yimin Hsu ,  Ching Tsang

发明人： Kuok Ho ,  Yimin Hsu ,  Ching Tsang

IPC分类号： G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3146

摘要： A double notched magnetic structure for use in a magnetic head for avoiding stray field writing. The structure could be a magnetic shield, magnetic pole of a write head or some other magnetic structure used in a magnetic head of a magnetic recording system, and has notches formed at both the front end (adjacent to the ABS) and at the back end (away from the ABS). The notches at the front end form a forward protruding portions that performs the necessary function of the structure, such as magnetic shielding, and has laterally extending recessed portions (recessed by the front notches) that move the flux focal points of the structure away from the ABS to avoid stray field writing. The back notches form a backward extending portion that affects the geometry of the structure to prevent the focusing of magnetic flux caused by stray magnetic fields having a component perpendicular to the ABS.

摘要翻译： 用于磁头中的双切口磁结构，用于避免杂散场写入。 该结构可以是磁屏蔽，写磁头的磁极或磁记录系统的磁头中使用的一些其它磁性结构，并且在前端（邻近ABS）和后端形成有缺口 （远离ABS）。 前端的凹口形成一个向前突出的部分，其执行诸如磁屏蔽的结构的必要功能，并且具有横向延伸的凹陷部分（由凹槽凹陷），该凹陷部分将结构的通量焦点移动离开 ABS避免杂散场写入。 后凹口形成一个向后延伸部分，该部分影响结构的几何形状，以防止由具有垂直于ABS的分量的杂散磁场引起的磁通聚焦。