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    Magnetic recording head wiht overlaid leads
    3.
    发明申请
    Magnetic recording head wiht overlaid leads 失效
    磁记录头与重叠导线

    公开(公告)号：US20070048624A1

    公开(公告)日：2007-03-01

    申请号：US11211877

    申请日：2005-08-24

    申请人： Tsung Chen ,  Frederick Dill ,  James Frietag ,  Kuok San Ho ,  Wipul Jayasekara ,  Kim Lee ,  Mustafa Pinarbasi ,  Ching Tsang ,  Pactrick Webb

    发明人： Tsung Chen ,  Frederick Dill ,  James Frietag ,  Kuok San Ho ,  Wipul Jayasekara ,  Kim Lee ,  Mustafa Pinarbasi ,  Ching Tsang ,  Pactrick Webb

    IPC分类号： G03H3/00 ,  G11B5/127

    CPC分类号： G11B5/3932 ,  G11B5/3929 ,  G11B5/398 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

    摘要： An embodiment of the invention is a magnetic head with overlaid lead pads that contact the top surface of the sensor between the hardbias structures and do not contact the hardbias structures which are electrically insulated from direct contact with the sensor. The lead pad contact area on the top of the sensor is defined by sidewall deposition of a conductive material to form leads pads on a photoresist prior to formation of the remainder of the leads. The conductive material for the lead pads is deposited at a shallow angle to maximize the sidewall deposition on the photoresist, then ion-milled at a high angle to remove the conductive material from the field while leaving the sidewall material. An insulation layer is deposited on the lead material at a high angle, then milled at a shallow angle to remove insulation from the sidewall.

    摘要翻译： 本发明的一个实施例是具有覆盖的引线焊盘的磁头，该焊盘在硬质合金结构之间接触传感器的顶表面，并且不接触与传感器直接接触的电绝缘的硬质合金结构。 传感器顶部的引线焊盘接触区域由导电材料的侧壁沉积限定，以在形成其余引线之前在光致抗蚀剂上形成引线焊盘。 用于引线焊盘的导电材料以浅角度沉积，以使光致抗蚀剂上的侧壁沉积最大化，然后以高角度离子研磨，以从外界移除导电材料，同时留下侧壁材料。 绝缘层以高角度沉积在引线材料上，然后以浅角度铣削以除去与侧壁的绝缘。

    Method for fabricating improved sensor for a magnetic head utilizing reactive ion milling process
    4.
    发明申请
    Method for fabricating improved sensor for a magnetic head utilizing reactive ion milling process 失效
    使用反应离子铣削工艺制造用于磁头的改进的传感器的方法

    公开(公告)号：US20060218776A1

    公开(公告)日：2006-10-05

    申请号：US11095979

    申请日：2005-03-30

    申请人： Michael Feldbaum ,  Wipul Jayasekara ,  Mustafa Pinarbasi

    发明人： Michael Feldbaum ,  Wipul Jayasekara ,  Mustafa Pinarbasi

    IPC分类号： B44C1/22 ,  G11B5/127 ,  H04R31/00

    CPC分类号： G11B5/3903 ,  G11B5/3163 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

    摘要： A magnetic head fabrication process in which a stencil layer is deposited upon a plurality of sensor layers. A photoresist mask in the desired read track width is fabricated upon the stencil layer. A reactive ion milling step is then conducted to remove the unmasked portions of the stencil layer. Where the stencil layer is composed of an organic compound, such as Duramide and/or diamond-like-carbon, a reactive ion milling step utilizing oxygen species produces a stencil of the present invention having exceptionally straight side walls with practically no undercuts. Thereafter, an ion milling step is undertaken in which the sensor layers that are not covered by the stencil are removed. The accurately formed stencil results in correspondingly accurately formed side walls of the remaining central sensor layers. A magnetic head sensor structure having a desired read track width and accurately formed side walls is thus fabricated.

    摘要翻译： 一种磁头制造工艺，其中模版层沉积在多个传感器层上。 在模板层上制造具有所需读取磁道宽度的光致抗蚀剂掩模。 然后进行反应离子研磨步骤以去除模板层的未掩模部分。 当模板层由有机化合物如Duramide和/或类金刚石碳构成时，利用氧气的反应离子研磨步骤产生具有非常直的侧壁的本发明的蜡纸，实际上没有底切。 此后，进行离子研磨步骤，其中未被模板覆盖的传感器层被去除。 准确地形成的模板导致剩余的中央传感器层的相应精确地形成的侧壁。 因此制造了具有期望的读取磁道宽度和精确形成的侧壁的磁头传感器结构。

    Read head having shaped read sensor-biasing layer junctions using partial milling and method of fabrication
    5.
    发明申请
    Read head having shaped read sensor-biasing layer junctions using partial milling and method of fabrication 失效
    读头使用部分铣削和制造方法成形读取传感器偏置层结

    公开(公告)号：US20060067009A1

    公开(公告)日：2006-03-30

    申请号：US10952427

    申请日：2004-09-27

    申请人： Marie-Claire Cyrille ,  Wipul Jayasekara ,  Mustafa Pinarbasi

    发明人： Marie-Claire Cyrille ,  Wipul Jayasekara ,  Mustafa Pinarbasi

    IPC分类号： G11B5/33 ,  G11B5/127

    CPC分类号： G11B5/3932 ,  G11B5/3903 ,  G11B5/398 ,  Y10T29/49039 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

    摘要： A method is disclosed for fabricating a read head for a magnetic disk drive having a read head sensor and a hard bias layer, where the read head has a shaped junction between the read head sensor and the hard bias layer. The method includes providing a layered wafer stack to be shaped. A single- or multi-layered photoresist mask having no undercut is deposited upon the layered wafer stack to be shaped. The layered wafer stack is shaped by the output of a milling source, where the shaping includes partial milling to within a partial milling range to form a shaped junction. A hard bias layer is then deposited which is in contact with the shaped junction of the wafer stack. A read head and a magnetic hard disk drive having a read head layer stack which has been partially milled are also disclosed.

    摘要翻译： 公开了一种用于制造具有读取头传感器和硬偏置层的磁盘驱动器的读取头的方法，其中读取头在读取头传感器和硬偏置层之间具有成形结。 该方法包括提供待成形的分层晶片叠层。 没有底切的单层或多层光致抗蚀剂掩模沉积在待成形的分层晶片叠层上。 分层晶片堆叠通过铣削源的输出成形，其中成形包括部分铣削以在部分铣削范围内以形成成形接合部。 然后沉积与晶片叠层的成形结接触的硬偏压层。 还公开了一种具有已经被部分铣削的读取头层堆叠的读取头和磁性硬盘驱动器。

    Tunnel MR head with long stripe height sensor stabilized through the shield
    6.
    发明申请
    Tunnel MR head with long stripe height sensor stabilized through the shield 有权
    隧道MR头，长条纹高度传感器通过屏蔽稳定

    公开(公告)号：US20070188939A1

    公开(公告)日：2007-08-16

    申请号：US11352491

    申请日：2006-02-10

    申请人： Robert Beach ,  Wipul Jayasekara ,  Vladimir Nikitin

    发明人： Robert Beach ,  Wipul Jayasekara ,  Vladimir Nikitin

    IPC分类号： G11B5/33 ,  G11B5/127

    CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3912 ,  G11B5/40

    摘要： In a CPP MR device such as a tunnel magnetoresistive (TMR) device, shoulders that have a magnetic moment that is matched to the magnetic moments of the free layer extend between the free layer and the S2 shield to provide an electrical path from one shoulder, through the shield, to the other shoulder for dissipating edge charges. Thus, a CPP MR device may include a seed stack, a pinned stack on the seed stack, and a tunnel barrier on the pinned stack. A free stack may be on the tunnel barrier, and the free stack can include a free sublayer separated from a magnetic shield and a path for dissipating edge charges in the free stack through the magnetic shield.

    摘要翻译： 在诸如隧道磁阻（TMR）器件的CPP MR器件中，具有与自由层的磁矩匹配的磁矩的肩部在自由层和S 2屏蔽之间延伸以提供从一个肩部 ，通过屏蔽，到另一肩，消散边缘电荷。 因此，CPP MR装置可以包括种子堆叠，种子堆叠上的钉扎堆叠以及钉扎堆叠上的隧道势垒。 自由堆叠可以在隧道屏障上，并且自由堆叠可以包括与磁屏蔽分离的自由子层和用于通过磁屏蔽消散自由堆叠中的边缘电荷的路径。

    Magnetic tunnel junction sensor with insulating antiferromagnetic material extending from free layer extensions to electrically conductive lead
    7.
    发明授权
    Magnetic tunnel junction sensor with insulating antiferromagnetic material extending from free layer extensions to electrically conductive lead 失效
    具有绝缘反铁磁材料的磁性隧道结传感器，从自由层延伸延伸到导电引线

    公开(公告)号：US07123455B2

    公开(公告)日：2006-10-17

    申请号：US10622033

    申请日：2003-07-16

    申请人： Wipul Jayasekara

    发明人： Wipul Jayasekara

    IPC分类号： G11B5/39

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3909 ,  Y10T29/49032 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

    摘要： A magnetic tunnel junction (MTJ) sensor in which the free layer longitudinal biasing elements are coupled, without insulation, to the free layer outside of the MTJ stack to provide reliable non-shunting MTJ free layer stabilization without extremely thin dielectric layers. In one embodiment, hard magnetic (HM) layers are disposed in contact with the free layer outside of and separated from the MTJ stack active region by a thick dielectric layer. In another embodiment, antiferromagnetic (AFM) bias layers are disposed in contact with the free layer outside of and separated from the MTJ stack active region by a thick dielectric layer. In other embodiments, nonconductive HM layers are disposed either in contact with the free layer outside of the MTJ stack active region and/or in abutting contact with the MTJ stack active region.

    摘要翻译： 一种磁性隧道结（MTJ）传感器，其中自由层纵向偏置元件无需绝缘地连接到MTJ堆叠之外的自由层，以提供可靠的非分流MTJ自由层稳定性，而无需极薄的电介质层。 在一个实施例中，硬磁（HM）层被设置成与厚电介质层在MTJ叠层有源区之外的自由层接触。 在另一个实施例中，反铁磁（AFM）偏置层设置成与厚电介质层在MTJ堆叠有源区之外的自由层接触。 在其它实施例中，非导电HM层设置为与MTJ堆叠有源区域外部的自由层接触和/或与MTJ堆叠有源区域邻接接触。

    Laminated draped shield for CPP read sensors
    9.
    发明申请
    Laminated draped shield for CPP read sensors 失效
    CPP读取传感器的层压罩

    公开(公告)号：US20060067005A1

    公开(公告)日：2006-03-30

    申请号：US10955701

    申请日：2004-09-30

    申请人： Wipul Jayasekara

    发明人： Wipul Jayasekara

    IPC分类号： G11B5/127 ,  G11B5/33

    CPC分类号： G11B5/332 ,  G11B5/313

    摘要： A magnetic head is disclosed having a CPP read head which produces reduced cross-track interference. The CPP read head includes a read sensor, a first shield and a second shield. The second shield has side drapes having an edge portion adjacent to the read sensor. The side drapes include a plurality of laminated layers which discourages formation of closure domains at the edge portions, and thus maintaining the side drapes in a state of high magnetic permeability. The laminated layers each include a magnetic layer and a non-magnetic spacer layer. Also disclosed is an edge closed lamination structure.

    摘要翻译： 公开了一种具有产生减小的交叉磁道干扰的CPP读取头的磁头。 CPP读取头包括读取传感器，第一屏蔽和第二屏蔽。 第二屏蔽件具有侧面，其具有与读取传感器相邻的边缘部分。 侧帘包括多个层压层，其阻止在边缘部分处形成封闭结构域，并且因此将侧帘保持在高磁导率的状态。 层叠层各自包括磁性层和非磁性间隔层。 还公开了一种边缘封闭层压结构。

    Magnetic tunnel junction sensor having a longitudinal bias layer in contact with a free layer
    10.
    发明授权
    Magnetic tunnel junction sensor having a longitudinal bias layer in contact with a free layer 有权
    磁隧道结传感器具有与自由层接触的纵向偏置层

    公开(公告)号：US06930866B2

    公开(公告)日：2005-08-16

    申请号：US10621483

    申请日：2003-07-16

    申请人： Wipul Jayasekara

    发明人： Wipul Jayasekara

    IPC分类号： G11B5/39

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3909 ,  Y10T29/49032 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

    摘要： A magnetic tunnel junction (MTJ) sensor in which the free layer longitudinal biasing elements are coupled, without insulation, to the free layer outside of the MTJ stack to provide reliable non-shunting MTJ free layer stabilization without extremely thin dielectric layers. In one embodiment, hard magnetic (HM) layers are disposed in contact with the free layer outside of and separated from the MTJ stack active region by a thick dielectric layer. In another embodiment, antiferromagnetic (AFM) bias layers are disposed in contact with the free layer outside of and separated from the MTJ stack active region by a thick dielectric layer. In other embodiments, nonconductive HM layers are disposed either in contact with the free layer outside of the MTJ stack active region and/or in abutting contact with the MTJ stack active region.

    摘要翻译： 一种磁性隧道结（MTJ）传感器，其中自由层纵向偏置元件无需绝缘地连接到MTJ堆叠之外的自由层，以提供可靠的非分流MTJ自由层稳定性，而无需极薄的电介质层。 在一个实施例中，硬磁（HM）层被设置成与厚电介质层在MTJ叠层有源区之外的自由层接触。 在另一个实施例中，反铁磁（AFM）偏置层设置成与厚电介质层在MTJ堆叠有源区之外的自由层接触。 在其它实施例中，非导电HM层设置为与MTJ堆叠有源区域外部的自由层接触和/或与MTJ堆叠有源区域邻接接触。