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    Magnetic write head design for reducing temperature induced protrusion
    1.
    发明申请
    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：US20070247750A1

    公开(公告)日：2007-10-25

    申请号：US11411590

    申请日：2006-04-25

    Applicant: Wen-Chien Hsiao ,  Yimin Hsu ,  Edward Lee ,  Vladimir Nikitin ,  Katalin Pentek

    Inventor： Wen-Chien Hsiao ,  Yimin Hsu ,  Edward Lee ,  Vladimir Nikitin ,  Katalin Pentek

    IPC: G11B5/147

    CPC classification number: G11B5/1278 ,  G11B5/3133 ,  G11B5/3136

    Abstract: 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.

    Abstract translation: 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。

    Magnetic imaging microscope test system and its application for characterization of read and write heads for magnetic recording
    2.
    发明授权
    Magnetic imaging microscope test system and its application for characterization of read and write heads for magnetic recording 失效
    磁成像显微镜测试系统及其用于磁记录读写头的表征

    公开(公告)号：US07023204B2

    公开(公告)日：2006-04-04

    申请号：US10298880

    申请日：2002-11-18

    Applicant: Vladimir Nikitin ,  Katalin Pentek

    Inventor： Vladimir Nikitin ,  Katalin Pentek

    IPC: G01R33/12

    CPC classification number: G01Q60/54 ,  G01Q10/06 ,  G01R33/0385 ,  G11B5/012 ,  G11B5/3103 ,  G11B5/3166 ,  G11B5/3173 ,  G11B5/3193 ,  G11B5/3909 ,  G11B5/455 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2005/0016 ,  G11B2005/3996

    Abstract: A novel magnetic imaging microscope test system with high spatial (1–10 nm) and temporal (˜1 ns) resolution of the magnetic field is disclosed, as well as the system application for characterization of read and write heads for magnetic recording. The test system includes a scanner assembly and a work piece holder for holding a work piece to be tested. The scanner assembly and the work piece holder are positionable relative to each other at very fine resolution during scanning. A probe arm is cantilevered from the scanner assembly to bring a probe head into close proximity to the work piece holder. The probe head is configured scan a work piece in contacting engagement therewith so that a magnetic device on the probe head magnetically interacts with a magnetic field generating or magnetic field sensing device on the work piece. A probe head for use in the test system and a related test method are also disclosed.

    Abstract translation: 公开了一种具有高空间（1-10nm）和时间（〜1ns）磁场分辨率的新型磁成像显微镜测试系统，以及用于表征磁记录读写头的系统应用。 测试系统包括扫描器组件和用于保持要测试的工件的工件保持器。 扫描仪组件和工件保持件可以在扫描期间以非常细的分辨率相对于彼此定位。 探头臂从扫描仪组件悬臂，使探针头靠近工件支架。 探针头被配置为扫描与其接触的工件，使得探针头上的磁性装置与工件上的磁场产生或磁场感测装置磁性地相互作用。 还公开了用于测试系统的探头和相关测试方法。

    Magnetic write head design for reducing temperature induced protrusion
    3.
    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

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

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

    IPC: G11B5/17 ,  G11B5/147

    CPC classification number: G11B5/1278 ,  G11B5/3133 ,  G11B5/3136

    Abstract: 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.

    Abstract translation: 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。

    Perpendicular magnetic write head having a magnetic write pole with a concave trailing edge
    4.
    发明申请
    Perpendicular magnetic write head having a magnetic write pole with a concave trailing edge 有权
    具有磁写入磁极的垂直磁性写头具有凹形后缘

    公开(公告)号：US20070258167A1

    公开(公告)日：2007-11-08

    申请号：US11411556

    申请日：2006-04-25

    Applicant: Donald Allen ,  Amanda Baer ,  Michael Feldbaum ,  Hung-Chin Guthrie ,  Wen-Chien Hsiao ,  Yimin Hsu ,  Ming Jiang ,  Yinshi Liu ,  Aron Neuhaus ,  Vladimir Nikitin ,  Aron Pentek ,  Katalin Pentek ,  Yi Zheng

    Inventor： Donald Allen ,  Amanda Baer ,  Michael Feldbaum ,  Hung-Chin Guthrie ,  Wen-Chien Hsiao ,  Yimin Hsu ,  Ming Jiang ,  Yinshi Liu ,  Aron Neuhaus ,  Vladimir Nikitin ,  Aron Pentek ,  Katalin Pentek ,  Yi Zheng

    IPC: G11B5/147

    CPC classification number: G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

    Abstract: A magnetic write head for perpendicular magnetic recording having a write pole with a concave trailing edge. The magnetic write pole can have a trapezoidal shape with first and second laterally opposed sides that are further apart at the trailing edge than at the leading edge. The write head may or may not include a magnetic trailing shield, and if a trailing shield is included it is separated from the trailing edge by a non-magnetic write gap layer. The concave trailing edge improves magnetic performance such as by improving the transition curvature. A method for constructing the write head includes forming a magnetic write pole by forming a mask structure over a deposited write pole material, the mask structure having an alumina hard mask and an image transfer layer such as DURAMIDE®. An alumina fill layer is then deposited and a chemical mechanical polish is performed to open up the image transfer layer. A reactive on etch is performed to remove the image transfer layer and a reactive ion mill or reactive ion etch is performed to remove the alumina hard mask and form a concave surface on the write pole.

    Abstract translation: 用于垂直磁记录的磁写头，具有带有凹后缘的写极。 磁性写入极可以具有梯形形状，其中第一和第二横向相对侧在后缘处比在前缘处更远地分开。 写头可以包括或可以不包括磁性后屏蔽，并且如果包括后屏蔽，则其通过非磁性写间隙层与后缘分离。 凹形后边缘提高磁性能，例如通过改善转变曲率。 构成写入头的方法包括通过在沉积的写入极材料上形成掩模结构来形成磁性写入极，掩模结构具有氧化铝硬掩模和诸如DURAMIDE的图像转移层。 然后沉积氧化铝填充层，并执行化学机械抛光以打开图像转印层。 执行反应性蚀刻以去除图像转印层，并且执行反应性离子磨或反应离子蚀刻以除去氧化铝硬掩模并在写入极上形成凹面。

    Perpendicular magnetic write head having a magnetic write pole with a concave trailing edge
    6.
    发明授权
    Perpendicular magnetic write head having a magnetic write pole with a concave trailing edge 有权
    具有磁写入磁极的垂直磁性写头具有凹形后缘

    公开(公告)号：US07576951B2

    公开(公告)日：2009-08-18

    申请号：US11411556

    申请日：2006-04-25

    Applicant: Donald G. Allen ,  Amanda Baer ,  Michael Feldbaum ,  Hung-Chin Guthrie ,  Wen-Chien David Hsiao ,  Yimin Hsu ,  Ming Jiang ,  Yinshi Liu ,  Aaron Neuhaus ,  Vladimir Nikitin ,  Aron Pentek ,  Katalin Pentek ,  Yi Zheng

    Inventor： Donald G. Allen ,  Amanda Baer ,  Michael Feldbaum ,  Hung-Chin Guthrie ,  Wen-Chien David Hsiao ,  Yimin Hsu ,  Ming Jiang ,  Yinshi Liu ,  Aaron Neuhaus ,  Vladimir Nikitin ,  Aron Pentek ,  Katalin Pentek ,  Yi Zheng

    IPC: G11B5/127

    CPC classification number: G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

    Abstract: A magnetic write head for perpendicular magnetic recording having a write pole with a concave trailing edge. The magnetic write pole can have a trapezoidal shape with first and second laterally opposed sides that are further apart at the trailing edge than at the leading edge. The write head may or may not include a magnetic trailing shield, and if a trailing shield is included it is separated from the trailing edge by a non-magnetic write gap layer. The concave trailing edge improves magnetic performance such as by improving the transition curvature. A method for constructing the write head includes forming a magnetic write pole by forming a mask structure over a deposited write pole material, the mask structure having an alumina hard mask and an image transfer layer such as DURAMIDE®. An alumina fill layer is then deposited and a chemical mechanical polish is performed to open up the image transfer layer. A reactive on etch is performed to remove the image transfer layer and a reactive ion mill or reactive ion etch is performed to remove the alumina hard mask and form a concave surface on the write pole.

    Abstract translation: 用于垂直磁记录的磁写头，具有带有凹后缘的写极。 磁性写入极可以具有梯形形状，其中第一和第二横向相对侧在后缘处比在前缘处更远地分开。 写头可以包括或可以不包括磁性后屏蔽，并且如果包括后屏蔽，则其通过非磁性写间隙层与后缘分离。 凹形后边缘提高磁性能，例如通过改善转变曲率。 构成写入头的方法包括通过在沉积的写入极材料上形成掩模结构来形成磁性写入极，掩模结构具有氧化铝硬掩模和诸如DURAMIDE的图像转移层。 然后沉积氧化铝填充层，并执行化学机械抛光以打开图像转印层。 执行反应性蚀刻以去除图像转印层，并且执行反应性离子磨或反应离子蚀刻以除去氧化铝硬掩模并在写入极上形成凹面。

    PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH NOTCHED TRAILING SHIELD AND METHOD FOR MAKING
    7.
    发明申请
    PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH NOTCHED TRAILING SHIELD AND METHOD FOR MAKING 失效
    具有记录轨迹的平面磁记录头和制造方法

    公开(公告)号：US20070263324A1

    公开(公告)日：2007-11-15

    申请号：US11379969

    申请日：2006-04-24

    Applicant: Donald Allen ,  Amanda Baer ,  Michael Feldbaum ,  Wen-Chien Hsiao ,  Vladimir Nikitin ,  Aron Pentek ,  Katalin Pentek

    Inventor： Donald Allen ,  Amanda Baer ,  Michael Feldbaum ,  Wen-Chien Hsiao ,  Vladimir Nikitin ,  Aron Pentek ,  Katalin Pentek

    IPC: G11B5/48

    CPC classification number: G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/3163 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

    Abstract: The invention is a perpendicular magnetic recording write head with a write pole, a trapezoidal-shaped trailing shield notch, and a metal gap layer between the write pole and notch. The write pole has a trailing edge that has a width substantially defining the track width and that faces the front edge of the notch but is spaced from it by the gap layer. The write head is fabricated by a process than includes reactive ion beam etching of a thin mask film above the write pole to remove the mask film and widen the opening at the edges of the write pole. The gap layer and notch are deposited into the widened opening above the write pole. The write pole has nonmagnetic filler material, such as alumina, surrounding it except at its trailing edge, where it is in contact with the gap layer, which is formed of a different material than the surrounding filler material.

    Abstract translation: 本发明是一种具有写极，梯形后屏蔽切口和写极与刻槽之间的金属间隙层的垂直磁记录写头。 写入极具有后缘，其具有基本上限定轨道宽度的宽度并且面向凹口的前边缘，但是通过间隙层与其间隔开。 写头通过一种工艺制造，而不是包括对写极上方的薄掩模膜的反应离子束蚀刻，以去除掩模膜并加宽写入极的边缘处的开口。 间隙层和凹口沉积在写柱上方的加宽开口中。 写极具有非磁性填充材料，例如氧化铝，除了其后缘外围，其与间隙层接触，间隙层由与周围填料材料不同的材料形成。

    Write head design with improved bump to control write saturation
    10.
    发明授权
    Write head design with improved bump to control write saturation 失效
    写头设计具有改进的凸块来控制写入饱和度

    公开(公告)号：US07110217B2

    公开(公告)日：2006-09-19

    申请号：US10687284

    申请日：2003-10-15

    Applicant: Edward Hin Pong Lee ,  Katalin Pentek ,  Yong Shen ,  Sue Siyang Zhang

    Inventor： Edward Hin Pong Lee ,  Katalin Pentek ,  Yong Shen ,  Sue Siyang Zhang

    IPC: G11B5/147

    CPC classification number: G11B5/60 ,  G11B5/127 ,  G11B5/147

    Abstract: A magnetic head having an air bearing surface (ABS) and a first pole tip. A second pole tip is spaced apart from and facing the upper end of the first pole tip across a write gap. A bump extends into a portion of the upper end of the first pole tip and a portion of the bottom end of the second pole tip, the bump being positioned away from the ABS. The bump defines a throat height of the first and second pole tips.

    Abstract translation: 具有空气轴承表面（ABS）和第一极端的磁头。 第二极尖与间隙隔开并面对第一极尖的上端。 凸块延伸到第一极尖端的上端的一部分和第二极尖的底端的一部分，凸块被定位成远离ABS。 凸块限定第一和第二极尖的喉部高度。

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