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    Magnetic head for perpendicular magnetic recording and method of manufacturing same
    3.
    发明授权
    Magnetic head for perpendicular magnetic recording and method of manufacturing same 有权
    用于垂直磁记录的磁头及其制造方法

    公开(公告)号：US07193816B2

    公开(公告)日：2007-03-20

    申请号：US10871040

    申请日：2004-06-21

    申请人： Yoshitaka Sasaki ,  Hiroyuki Itoh ,  Dong-Hong Li ,  Po-Kang Wang ,  Lijie Guan

    发明人： Yoshitaka Sasaki ,  Hiroyuki Itoh ,  Dong-Hong Li ,  Po-Kang Wang ,  Lijie Guan

    IPC分类号： G11B5/147

    CPC分类号： G11B5/3136 ,  G11B5/1278 ,  G11B5/1872 ,  G11B5/3106 ,  G11B5/3143 ,  G11B5/3163

    摘要： A magnetic head comprises a pole layer, a gap layer, a shield layer, a nonmagnetic layer, and a coil. The shield layer incorporates: a first layer disposed on the gap layer; a second layer disposed on the first layer; a two-layered coupling layer disposed on a region of the pole layer where an opening of the gap layer is formed; and a third layer disposed to couple the second layer to the coupling layer. The first layer defines throat height TH. The nonmagnetic layer is disposed on a side of the first layer. The coil is disposed on the nonmagnetic layer on a side of the second layer.

    摘要翻译： 磁头包括极层，间隙层，屏蔽层，非磁性层和线圈。 屏蔽层包括：设置在间隙层上的第一层; 设置在所述第一层上的第二层; 设置在形成间隙层的开口的极层的区域上的双层结合层; 以及设置成将所述第二层耦合到所述耦合层的第三层。 第一层定义喉咙高度TH。 非磁性层设置在第一层的一侧。 线圈设置在第二层一侧的非磁性层上。

    Magnetic write head with thin and thick portions for balancing writability and ate
    5.
    发明授权
    Magnetic write head with thin and thick portions for balancing writability and ate 有权
    磁性写头，薄而厚的部分，用于平衡书写和吃

    公开(公告)号：US08184399B2

    公开(公告)日：2012-05-22

    申请号：US12924416

    申请日：2010-09-27

    申请人： Yan Wu ,  Moris Dovek ,  Zhigang Bai ,  Cherng-Chyi Han ,  Jiun-Ting Lee ,  Po-Kang Wang

    发明人： Yan Wu ,  Moris Dovek ,  Zhigang Bai ,  Cherng-Chyi Han ,  Jiun-Ting Lee ,  Po-Kang Wang

    IPC分类号： G11B5/127

    CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3163

    摘要： A perpendicular magnetic recording (PMR) head is fabricated with a tapered main pole having a variable thickness. The tapered portion of the pole is at the ABS tip and it can be formed by bevels at the leading or trailing edges or both. The taper terminates to form a region with a maximum thickness, t1, which extends for a certain distance proximally. Beyond this region of maximum thickness t1, the pole is then reduced to a constant minimum thickness t2. A yoke is attached to this region of constant minimum thickness. This pole design requires less flux because of the thinner region of the pole where it attaches to the yoke, but the thicker region just before the tapered ABS provides additional flux to drive the pole just before the ABS, so that high definition and field gain is achieved, yet fringing is significantly reduced.

    摘要翻译： 制造具有可变厚度的锥形主极的垂直磁记录（PMR）头。 极的锥形部分在ABS尖端处，并且其可以由前缘或后缘处的斜面或两者形成。 锥形终止形成最大厚度的区域t1，其向近处延伸一定距离。 超过该最大厚度的区域t1，然后将极减小到恒定的最小厚度t2。 磁轭连接到恒定最小厚度的区域。 这个极设计需要更少的通量，因为它附着在磁轭上的磁极的较薄区域，而刚好在锥形ABS之前较厚的区域提供额外的磁通来驱动刚好在ABS之前的极点，因此高清晰度和场增益是 实现了，但边缘明显减少。

    Junction stability and yield for spin valve heads
    6.
    发明授权
    Junction stability and yield for spin valve heads 失效
    自旋阀头的结点稳定性和产量

    公开(公告)号：US06879474B2

    公开(公告)日：2005-04-12

    申请号：US10718878

    申请日：2003-11-21

    申请人： Chen-Jung Chien ,  Chyu-Jiuh Torng ,  Cherng-Chyi Han ,  Moris Dovek ,  Po-Kang Wang ,  Mao-Min Chen

    发明人： Chen-Jung Chien ,  Chyu-Jiuh Torng ,  Cherng-Chyi Han ,  Moris Dovek ,  Po-Kang Wang ,  Mao-Min Chen

    IPC分类号： G01R33/09 ,  G11B5/31 ,  G11B5/39 ,  H01L43/08 ,  H01L43/12

    CPC分类号： B82Y10/00 ,  G11B5/313 ,  G11B5/3903 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49052

    摘要： The possibility of shorting between a spin valve and its underlying magnetic shield layer can be largely eliminated by choosing the bottom spin valve structure. However, doing so causes the hard longitudinal bias that is standard for all such devices to degrade. The present invention overcomes this problem by inserting a thin NiCr, Ni, Fe, or Cr layer between the antiferromagnetic layer and the longitudinal bias layers. This provides a smoother surface for the bias layers to be deposited onto, thereby removing structural distortions to the longitudinal bias layer that would otherwise be present. A process for manufacturing the structure is also described.

    摘要翻译： 通过选择底部自旋阀结构，可以大大消除自旋阀与其下面的磁屏蔽层之间短路的可能性。 然而，这样做会导致所有这些设备的标准硬的纵向偏差降级。 本发明通过在反铁磁层和纵向偏置层之间插入薄的NiCr，Ni，Fe或Cr层来克服这个问题。 这为偏压层沉积提供了更平滑的表面，从而消除了否则将存在的纵向偏置层的结构变形。 还描述了用于制造该结构的方法。

    Patterned exchange bias GMR using metallic buffer layer
    8.
    发明授权
    Patterned exchange bias GMR using metallic buffer layer 失效
    图案交换偏置GMR使用金属缓冲层

    公开(公告)号：US07336452B2

    公开(公告)日：2008-02-26

    申请号：US11036957

    申请日：2005-01-14

    申请人： Moris Dovek ,  Po-Kang Wang ,  Chen-Jung Chien ,  Chyu-Jiuh Torng ,  Yun-Fei Li

    发明人： Moris Dovek ,  Po-Kang Wang ,  Chen-Jung Chien ,  Chyu-Jiuh Torng ,  Yun-Fei Li

    IPC分类号： G11B5/33

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10T29/49032 ,  Y10T29/49036 ,  Y10T29/49044 ,  Y10T29/49046

    摘要： In magnetic read heads based on bottom spin valves the preferred structure is for the longitudinal bias layer to be in direct contact with the free layer. Such a structure is very difficult to manufacture. The present invention overcomes this problem by introducing an extra layer between the bias electrodes and the free layer. This layer protects the free layer during processing but is thin enough to not interrupt exchange between the bias electrodes and the free layer. In one embodiment this is a layer of copper about 5 Å thick and parallel exchange is operative. In other embodiments ruthenium is used to provide antiparallel exchange between the bias electrode and the free layer. A process for manufacturing the structure is also described.

    摘要翻译： 在基于底部自旋阀的磁性读取头中，优选的结构是使纵向偏置层与自由层直接接触。 这样的结构很难制造。 本发明通过在偏置电极和自由层之间引入额外的层来克服这个问题。 该层在处理过程中保护自由层，但足够薄到不会中断偏置电极和自由层之间的交换。 在一个实施例中，这是一层厚约5埃的铜层并且平行的交换是可操作的。 在其他实施方案中，钌用于在偏置电极和自由层之间提供反向平行交换。 还描述了用于制造该结构的方法。

    Patterned exchange bias GMR using metallic buffer layer
    9.
    发明申请
    Patterned exchange bias GMR using metallic buffer layer 失效
    图案交换偏置GMR使用金属缓冲层

    公开(公告)号：US20050128649A1

    公开(公告)日：2005-06-16

    申请号：US11036957

    申请日：2005-01-14

    申请人： Moris Dovek ,  Po-Kang Wang ,  Chen-Jung Chien ,  Chyu-Jiuh Torng ,  Yun-Fei Li

    发明人： Moris Dovek ,  Po-Kang Wang ,  Chen-Jung Chien ,  Chyu-Jiuh Torng ,  Yun-Fei Li

    IPC分类号： G11B5/39 ,  G11B5/33 ,  G11B5/127

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10T29/49032 ,  Y10T29/49036 ,  Y10T29/49044 ,  Y10T29/49046

    摘要： In magnetic read heads based on bottom spin valves the preferred structure is for the longitudinal bias layer to be in direct contact with the free layer. Such a structure is very difficult to manufacture. The present invention overcomes this problem by introducing an extra layer between the bias electrodes and the free layer. This layer protects the free layer during processing but is thin enough to not interrupt exchange between the bias electrodes and the free layer. In one embodiment this is a layer of copper about 5 Å thick and parallel exchange is operative. In other embodiments ruthenium is used to provide antiparallel exchange between the bias electrode and the free layer. A process for manufacturing the structure is also described.

    摘要翻译： 在基于底部旋转阀的磁性读取头中，优选的结构是使纵向偏置层与自由层直接接触。 这样的结构很难制造。 本发明通过在偏置电极和自由层之间引入额外的层来克服这个问题。 该层在处理过程中保护自由层，但足够薄到不会中断偏置电极和自由层之间的交换。 在一个实施例中，这是一层厚约5埃的铜层并且平行的交换是可操作的。 在其他实施方案中，钌用于在偏置电极和自由层之间提供反向平行交换。 还描述了用于制造该结构的方法。