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    Recording heads including a magnetically damped write pole and recording systems including such heads
    1.
    发明授权
    Recording heads including a magnetically damped write pole and recording systems including such heads 有权
    记录头包括磁阻写入磁极和包括这种磁头的记录系统

    公开(公告)号：US07595959B2

    公开(公告)日：2009-09-29

    申请号：US11170035

    申请日：2005-06-29

    申请人： Mark William Covington ,  Ganping Ju ,  Werner Scholz ,  Michael Kevin Minor

    发明人： Mark William Covington ,  Ganping Ju ,  Werner Scholz ,  Michael Kevin Minor

    IPC分类号： G11B5/127

    CPC分类号： G11B5/667 ,  G11B5/1278 ,  G11B5/581 ,  G11B5/6005 ,  Y10T428/115 ,  Y10T428/1186

    摘要： A magnetic recording system is disclosed in which the magnetization dynamics of the write head and recording medium are highly damped. The system may comprise a perpendicular recording head having a write pole, and a recording medium including a hard magnetic recording layer and a soft magnetic underlayer (SUL). The increased magnetic damping in the write pole and SUL suppresses precessional motion of the respective magnetizations, leading to a reduction in transition jitter caused by spurious head field fluctuations. The damping may be increased by providing films or multilayer structures that are doped with rare earth or transition metal elements. Exchange coupled laminates of doped and undoped layers may optimize both the effective damping and write field in the recording system.

    摘要翻译： 公开了一种磁记录系统，其中写头和记录介质的磁化动力学被高度阻尼。 该系统可以包括具有写入极的垂直记录头和包括硬磁记录层和软磁性底层（SUL）的记录介质。 写入磁极和SUL中的增加的磁阻抑制了相应磁化的进动运动，导致由杂散磁头场波动引起的转换抖动的减小。 可以通过提供掺杂有稀土或过渡金属元素的膜或多层结构来增加阻尼。 掺杂和未掺杂层的交换耦合层压板可以优化记录系统中的有效阻尼和写入场。

    Perpendicular write head with high magnetization pole material and method of fabricating the write head
    3.
    发明授权
    Perpendicular write head with high magnetization pole material and method of fabricating the write head 有权
    具有高磁化极材料的垂直写头和制造写头的方法

    公开(公告)号：US06687085B2

    公开(公告)日：2004-02-03

    申请号：US10037932

    申请日：2002-01-04

    申请人： Michael Kevin Minor ,  Robert Earl Rottmayer ,  Michael Allen Seigler ,  Andrew Robert Eckert ,  Mark William Covington

    发明人： Michael Kevin Minor ,  Robert Earl Rottmayer ,  Michael Allen Seigler ,  Andrew Robert Eckert ,  Mark William Covington

    IPC分类号： G11B5147

    CPC分类号： G11B5/187 ,  G11B5/012 ,  G11B5/127 ,  G11B5/1278

    摘要： A write head comprises a yoke including a top pole and a bottom pole, the top pole including a layer of insulating material, a layer of a first magnetic material positioned on a surface of the layer of insulating material, the first magnetic material having a first end positioned adjacent to an air bearing surface of the write pole, and a layer of a second magnetic material positioned on the surface of the layer of insulating material, the second magnetic material having a lower magnetic moment than the first magnetic material and being positioned to conduct magnetic flux between the return pole and the layer of first magnetic material. The method of constructing the write head and a disc drive including the write head are also included.

    摘要翻译： 一个写头包括一个包括顶极和一个底极的磁轭，顶极包括一层绝缘材料，第一个磁性材料层位于绝缘材料层的一个表面上，第一个磁性材料有一个第一个 并且位于与所述写入极的空气支承表面相邻的端部以及位于所述绝缘材料层的表面上的第二磁性材料层，所述第二磁性材料具有比所述第一磁性材料更低的磁矩并且定位成 在返回极和第一磁性材料层之间传导磁通。 还包括构成写入头的方法和包括写入头的盘驱动器。

    Ampere wire write head with confined magnetic fields
    4.
    发明授权
    Ampere wire write head with confined magnetic fields 有权
    安培有线写磁头与限制磁场

    公开(公告)号：US07212367B2

    公开(公告)日：2007-05-01

    申请号：US10869444

    申请日：2004-06-16

    申请人： Thomas William Clinton ,  Petrus Antonius van der Heijden ,  Michael Allen Seigler ,  Mark William Covington ,  Werner Scholz ,  Sharat Batra

    发明人： Thomas William Clinton ,  Petrus Antonius van der Heijden ,  Michael Allen Seigler ,  Mark William Covington ,  Werner Scholz ,  Sharat Batra

    IPC分类号： G11B5/02 ,  G11B5/187

    CPC分类号： G11B5/315 ,  G11B5/127 ,  G11B5/187

    摘要： A magnetic recording head comprises a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a conductor positioned adjacent to an edge of the write pole at the air bearing surface, a first conductive heat sink connected to the conductor, and a second conductive heat sink connected to the conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a structure for augmenting confinement of a magnetic write field adjacent to the write pole. Magnetic storage devices that include the magnetic recording head are also included.

    摘要翻译： 磁记录头包括具有与记录头的空气轴承表面相邻的尖端的写入磁极，磁极耦合到写入极的返回磁极，与空气轴承表面上的写入极的边缘相邻定位的导体， 连接到所述导体的第一导电散热器和连接到所述导体的第二导电散热器，其中所述第一和第二导电散热器中的每一个的至少一部分被定位成邻近所述空气轴承表面，并且其中， 第二导电散热器包括用于增加与写入极相邻的磁写入场的约束的结构。 还包括包括磁记录头的磁存储装置。

    MAGNETIC ELEMENT WITH BIASED SIDE SHIELD LAMINATION
    7.
    发明申请
    MAGNETIC ELEMENT WITH BIASED SIDE SHIELD LAMINATION 有权
    具有偏置侧面屏蔽层的磁性元件

    公开(公告)号：US20140002930A1

    公开(公告)日：2014-01-02

    申请号：US13539099

    申请日：2012-06-29

    申请人： Dimitar Velikov Dimitrov ,  Dian Song ,  Mark William Covington

    发明人： Dimitar Velikov Dimitrov ,  Dian Song ,  Mark William Covington

    IPC分类号： G11B5/60

    CPC分类号： G11B5/3912 ,  G11B5/398

    摘要： A magnetic element is generally provided that can be implemented as a transducing head. Various embodiments may configure a magnetic stack having a magnetically free layer with a predetermined magnetization. A side shield lamination can be separated from the magnetic stack on an air hearing surface (ABS) and biased to a bias magnetization that opposes the predetermined magnetization.

    摘要翻译： 通常提供可以实现为换能头的磁性元件。 各种实施例可以构造具有预定磁化强度的磁性层的磁性堆叠。 侧屏蔽叠片可以与空气听觉表面（ABS）上的磁性堆叠分离，并被偏压到与预定磁化相对的偏置磁化强度。

    MAGNETORESISTIVE MEMORY ELEMENTS WITH SEPARATE READ AND WRITE CURRENT PATHS
    9.
    发明申请
    MAGNETORESISTIVE MEMORY ELEMENTS WITH SEPARATE READ AND WRITE CURRENT PATHS 有权
    具有独立阅读和写入电流的磁记忆元件

    公开(公告)号：US20090141541A1

    公开(公告)日：2009-06-04

    申请号：US11947194

    申请日：2007-11-29

    申请人： Mark William Covington

    发明人： Mark William Covington

    IPC分类号： G11C11/00

    CPC分类号： G11C11/1675 ,  G11C11/161 ,  G11C11/1659 ,  G11C11/1673

    摘要： A magnetoresistive memory element has a free layer, and a write current path aligned with a free layer plane. The memory element has a pinned layer with a magnetization direction aligned with that of the free layer. A barrier layer is disposed between the free layer and the pinned layer. The free, barrier and pinned layers together form a layer stack that has a read current path that extends through the layer stack and that is not aligned with the write current path in the free layer.

    摘要翻译： 磁阻存储元件具有自由层和与自由层平面对准的写入电流路径。 存储元件具有与自由层的磁化方向对准的钉扎层。 阻挡层设置在自由层和钉扎层之间。 自由，屏障和钉扎层一起形成层堆叠，其具有延伸穿过层堆叠并且不与自由层中的写入电流路径对准的读取电流路径。

    Magnetic element with biased side shield lamination
    10.
    发明授权
    Magnetic element with biased side shield lamination 有权
    磁性元件带有侧面屏蔽层叠

    公开(公告)号：US08780508B2

    公开(公告)日：2014-07-15

    申请号：US13539099

    申请日：2012-06-29

    申请人： Dimitar Velikov Dimitrov ,  Dian Song ,  Mark William Covington

    发明人： Dimitar Velikov Dimitrov ,  Dian Song ,  Mark William Covington

    IPC分类号： G11B5/33 ,  G11B5/39

    CPC分类号： G11B5/3912 ,  G11B5/398

    摘要： A magnetic element is generally provided that can be implemented as a transducing head. Various embodiments may configure a magnetic stack having a magnetically free layer with a predetermined magnetization. A side shield lamination can be separated from the magnetic stack on an air hearing surface (ABS) and biased to a bias magnetization that opposes the predetermined magnetization.

    摘要翻译： 通常提供可以实现为换能头的磁性元件。 各种实施例可以构造具有预定磁化强度的磁性层的磁性堆叠。 侧屏蔽叠片可以与空气听觉表面（ABS）上的磁性堆叠分离，并被偏压到与预定磁化相对的偏置磁化强度。