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    MULTILAYER STITCHED YOKE FOR A HIGH DATA RATE PERPENDICULAR WRITE HEAD
    1.
    发明申请
    MULTILAYER STITCHED YOKE FOR A HIGH DATA RATE PERPENDICULAR WRITE HEAD 审中-公开
    MULTILERER STITCHED YOKE FOR HIGH DATA RATE PERPENDICULAR WRITE HEAD

    公开(公告)号：US20090116152A1

    公开(公告)日：2009-05-07

    申请号：US11935284

    申请日：2007-11-05

    申请人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin ,  Weihua Wang

    发明人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin ,  Weihua Wang

    IPC分类号： G11B5/33

    CPC分类号： G11B5/3133 ,  G11B5/1278 ,  G11B5/3116

    摘要： A magnetic write head for perpendicular magnetic data recording having a write pole that is sandwiched between first and second magnetic shaping layers. The split shaping layers allow a laminated shaping layer structure allows a manufacturable laminated shaping layer to be constructed for improved data rate. One of the magnetic shaping layers can be formed as a laminated structure while that other can be a single layer of electroplated magnetic material. The shaping layers can be separated from the write pole by a thin layer of non-magnetic material to form a laminated interface between the write pole and the shaping layers. These features reduce magnetic domains and also reduce eddy currents which advantageously improves data rate.

    摘要翻译： 一种用于垂直磁数据记录的磁头，具有夹在第一和第二磁性成形层之间的写入极。 分裂成形层允许层压成形层结构允许构建可制造的层压成形层以提高数据速率。 一个磁性成形层可以形成为层叠结构，而另一个可以是单层电镀磁性材料。 成形层可以通过非磁性材料的薄层与写入极分离，以在写入极和成形层之间形成层压界面。 这些特征减少磁畴并且还减少涡流，这有利地提高了数据速率。

    Perpendicular magnetic write head with shunt structure to prevent read sensor interference
    2.
    发明授权
    Perpendicular magnetic write head with shunt structure to prevent read sensor interference 有权
    垂直磁头，分流结构，防止读取传感器干扰

    公开(公告)号：US07639453B2

    公开(公告)日：2009-12-29

    申请号：US11497202

    申请日：2006-08-01

    申请人： Hardayal Singh Gill ,  Kuok San Ho ,  Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin

    发明人： Hardayal Singh Gill ,  Kuok San Ho ,  Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3123 ,  G11B5/1278 ,  G11B5/3967

    摘要： A magnetic head structure for use in perpendicular magnetic recording. The magnetic head includes a magnetic write head having a return pole with a magnetic shunt structure extending from the back end opposite the ABS. The magnetic shunt structure prevents magnetic field from the write coil from reaching and affecting the read head. More specifically the shunt structure prevents magnetic field from the portion of the write coil beyond the back gap (as measured from the ABS) from magnetizing a magnetic shield of the read head. The shunt structure is also configured so as to avoid stray field writing. The size and shape of the shunt structure is therefore, limited to avoid attracting stray fields that might cause such stray field writing.

    摘要翻译： 用于垂直磁记录的磁头结构。 磁头包括具有从与ABS相对的后端延伸的磁分路结构的返回极的磁写头。 磁分路结构防止来自写入线圈的磁场到达并影响读取头。 更具体地说，分流结构防止来自写入线圈的部分的磁场超过后隙（从ABS测量）来磁化读取磁头的磁屏蔽。 分流结构也被配置为避免杂散场写入。 因此，分流结构的尺寸和形状受到限制，以避免吸引可能导致这种杂散场写入的杂散场。

    Perpendicular magnetic write head with shunt structure to prevent read sensor interference
    4.
    发明申请
    Perpendicular magnetic write head with shunt structure to prevent read sensor interference 有权
    垂直磁头，分流结构，防止读取传感器干扰

    公开(公告)号：US20080030897A1

    公开(公告)日：2008-02-07

    申请号：US11497202

    申请日：2006-08-01

    申请人： Hardayal Singh Gill ,  Kuok San Ho ,  Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin

    发明人： Hardayal Singh Gill ,  Kuok San Ho ,  Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin

    IPC分类号： G11B5/147 ,  G11B5/127

    CPC分类号： G11B5/3123 ,  G11B5/1278 ,  G11B5/3967

    摘要： A magnetic head structure for use in perpendicular magnetic recording. The magnetic head includes a magnetic write head having a return pole with a magnetic shunt structure extending from the back end opposite the ABS. The magnetic shunt structure prevents magnetic field from the write coil from reaching and affecting the read head. More specifically the shunt structure prevents magnetic field from the portion of the write coil beyond the back gap (as measured from the ABS) from magnetizing a magnetic shield of the read head. The shunt structure is also configured so as to avoid stray field writing. The size and shape of the shunt structure is therefore, limited to avoid attracting stray fields that might cause such stray field writing.

    摘要翻译： 用于垂直磁记录的磁头结构。 磁头包括具有从与ABS相对的后端延伸的磁分路结构的返回极的磁写头。 磁分路结构防止来自写入线圈的磁场到达并影响读取头。 更具体地说，分流结构防止来自写入线圈的部分的磁场超过后隙（从ABS测量）来磁化读取磁头的磁屏蔽。 分流结构也被配置为避免杂散场写入。 因此，分流结构的尺寸和形状受到限制，以避免吸引可能导致这种杂散场写入的杂散场。

    Perpendicular magnetic recording write head with coplanar main pole and return poles and magnetic recording system
    6.
    发明授权
    Perpendicular magnetic recording write head with coplanar main pole and return poles and magnetic recording system 有权
    垂直磁记录头与共平面的主极和返回极和磁记录系统

    公开(公告)号：US07768744B2

    公开(公告)日：2010-08-03

    申请号：US11743150

    申请日：2007-05-02

    申请人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin

    发明人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin

    IPC分类号： G11B5/147 ,  G11B5/17

    CPC分类号： G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3123 ,  G11B5/3146 ,  G11B5/315

    摘要： A perpendicular magnetic recording write head has a main pole and return poles that are substantially coplanar. The write head includes a main pole, two return poles and a connecting stud that are all formed as a single layer in a single deposition and patterning step. The coplanar main and return poles lie in a plane parallel to the cross-track direction. The two return poles are thus spaced from the main pole in the cross-track direction. The main pole includes a write pole connected to it but lying in a plane spaced in the along-the-track direction from the plane of the main pole. The write head includes a helical coil wrapped around the main pole. The magnetic flux path is from the write pole to the disk recording layer in a data track aligned with the write pole, to the disk underlayer beneath the recording layer, through the underlayer to data tracks spaced cross-track from the data track aligned with the write pole, and back through the return poles.

    摘要翻译： 垂直磁记录写头具有基本上共面的主极和返回极。 写头包括在单个沉积和图案化步骤中都形成为单层的主极，两个返回极和连接柱。 共平面的主极和返回极位于平行于交叉轨道方向的平面中。 因此，两个返回极在交叉轨道方向上与主极间隔开。 主极包括连接到其上的写入极，但是位于沿主轨方向与主极平面间隔开的平面中。 写头包括缠绕在主极上的螺旋线圈。 磁通路径是从记录磁极对准的数据磁道中的写入磁极到磁盘记录层，到记录层下方的磁盘底层，通过底层到从与数据磁道对准的数据磁道间隔开的数据磁道 写柱，并通过返回杆返回。

    Perpendicular magnetic write head having a wrap around trailing shield with a flux return path
    8.
    发明申请
    Perpendicular magnetic write head having a wrap around trailing shield with a flux return path 审中-公开
    垂直磁性写头，具有带有通量返回路径的后挡板的包裹物

    公开(公告)号：US20080112088A1

    公开(公告)日：2008-05-15

    申请号：US11598417

    申请日：2006-11-13

    申请人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin ,  Aron Pentek ,  Yi Zheng

    发明人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin ,  Aron Pentek ,  Yi Zheng

    IPC分类号： G11B5/33

    CPC分类号： G11B5/1278 ,  G11B5/11

    摘要： A magnetic write head for perpendicular magnetic recording that has write pole, a return pole and a trailing shield that is magnetically connected with magnetic return pole. The write head includes a magnetic pedestal and first and second magnetic studs that connect the trailing shield with the pedestal. The studs are laterally spaced a distance that is not greater than 5 um from the nearest side of the write pole. In other words, the studs are spaced from each other a distance that is no greater than the width of the leading edge of the write pole plus 10 um. This spacing of the studs prevents saturation of the trailing shield, maximizing field gradient and ensuring optimal magnetic write performance.

    摘要翻译： 用于垂直磁记录的磁头，具有写磁极，与磁返回极磁性连接的返回极和后屏蔽。 写头包括一个磁性基座和将尾部屏蔽与基座相连的第一和第二磁性螺柱。 螺柱横向间隔开距离写柱最近侧不超过5um的距离。 换句话说，螺柱彼此间隔开不大于写入极的前缘的宽度加上10um的距离。 螺栓的这种间距防止后挡板的饱和，使场梯度最大化并确保最佳磁写性能。

    Magnetic write head design for reducing temperature induced protrusion
    10.
    发明授权
    Magnetic write head design for reducing temperature induced protrusion 有权
    磁写头设计用于降低温度引起的突起

    公开(公告)号：US07593183B2

    公开(公告)日：2009-09-22

    申请号：US11411590

    申请日：2006-04-25

    申请人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin ,  Katalin Pentek

    发明人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Edward Hin Pong Lee ,  Vladimir Nikitin ,  Katalin Pentek

    IPC分类号： G11B5/17 ,  G11B5/147

    CPC分类号： G11B5/1278 ,  G11B5/3133 ,  G11B5/3136

    摘要： A magnetic write pole having a structure that prevents thermally induced pole tip protrusion. The write head has a return pole with a magnetic pedestal formed at the air bearing surface (ABS) and a back gap at an end opposite the ABS. An electrically conductive write coil having a plurality of turns passes over the return pole. A fill layer of a material having a low coefficient of thermal expansion, such as alumina is disposed between the coil and the pedestal, and may extend over the top of the coil to the back gap. A photoresist coil insulation layer may be provided between the turns of the coil to insulate the turns of the coil from one another. The photoresist coil insulation layer can also extend to the back gap. A write pole, formed above the return pole and coil is magnetically connected with the back gap layer and return pole by a magnetic shaping layer.

    摘要翻译： 具有防止热感应极尖突出的结构的磁性写入极。 写头具有在空气轴承表面（ABS）形成的磁性基座的返回极和与ABS相对的一端的后部间隙。 具有多个匝的导电写入线圈通过返回极。 具有低热膨胀系数的材料的填充层（例如氧化铝）设置在线圈和基座之间，并且可以在线圈的顶部延伸到后部间隙。 可以在线圈的匝之间设置光致抗蚀剂线圈绝缘层，以将线圈的匝彼此绝缘。 光致抗蚀剂线圈绝缘层也可以延伸到后隙。 在返回极和线圈之上形成的写极通过磁性成形层与后间隙层和返回极磁连接。