利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

187 条记录 (耗时 0.031 秒)

    Magnetic write head with thin and thick portions for balancing writability and ate
    6.
    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。

    Wrap-around shielded writer with highly homogeneous shield material
    7.
    发明申请
    Wrap-around shielded writer with highly homogeneous shield material 有权
    带有高度均匀的屏蔽材料的环绕屏蔽作者

    公开(公告)号：US20110097601A1

    公开(公告)日：2011-04-28

    申请号：US12589597

    申请日：2009-10-26

    申请人： Zhigang Bai ,  Yan Wu ,  Moris Dovek ,  Cherng Chyi Han

    发明人： Zhigang Bai ,  Yan Wu ,  Moris Dovek ,  Cherng Chyi Han

    IPC分类号： G11B5/33

    CPC分类号： G11B5/6082 ,  G11B5/112 ,  G11B5/1278 ,  G11B5/315 ,  G11B5/3163 ,  Y10T428/1171

    摘要： A perpendicular magnetic recording (PMR) head is fabricated with a main pole shielded laterally by a pair of side shields, shielded above by a trailing shield and shielded optionally below by a leading shield. The shields and the seed layers on which they are formed are formed of materials having substantially the same physical characteristics including the same material composition, the same hardness, the same response to processes such as ion beam etching (IBE), chemical mechanical polishing (CMP), mechanical lapping, such as the slider ABS lapping, the same coefficient of thermal expansion (CTE) as well as the same Bs. Optionally, the trailing shield may be formed on a high Bs seed layer to provide the write head with improved down-track performance.

    摘要翻译： 垂直磁记录（PMR）头被制造成具有由一对侧屏蔽横向屏蔽的主极，屏蔽在后面并由屏蔽罩屏蔽并且被前屏蔽罩屏蔽。 其形成的屏蔽层和种子层由具有相同物理特性的材料形成，包括相同的材料组成，相同的硬度，对离子束蚀刻（IBE），化学机械抛光（CMP） ），机械研磨，如滑块ABS研磨，相同的热膨胀系数（CTE）以及相同的Bs。 可选地，后屏蔽可以形成在高Bs种子层上，以向写头提供改进的下行轨迹性能。

    Wrap-around shielded writer with highly homogeneous shield material
    8.
    发明授权
    Wrap-around shielded writer with highly homogeneous shield material 有权
    带有高度均匀的屏蔽材料的环绕屏蔽作者

    公开(公告)号：US08842389B2

    公开(公告)日：2014-09-23

    申请号：US12589597

    申请日：2009-10-26

    申请人： Zhigang Bai ,  Yan Wu ,  Moris Dovek ,  Cherng Chyi Han

    发明人： Zhigang Bai ,  Yan Wu ,  Moris Dovek ,  Cherng Chyi Han

    IPC分类号： G11B5/11 ,  G11B5/31 ,  G11B5/127

    CPC分类号： G11B5/6082 ,  G11B5/112 ,  G11B5/1278 ,  G11B5/315 ,  G11B5/3163 ,  Y10T428/1171

    摘要： A perpendicular magnetic recording (PMR) head is fabricated with a main pole shielded laterally by a pair of side shields, shielded above by a trailing shield and shielded optionally below by a leading shield. The shields and the seed layers on which they are formed are formed of materials having substantially the same physical characteristics including the same material composition, the same hardness, the same response to processes such as ion beam etching (IBE), chemical mechanical polishing (CMP), mechanical lapping, such as the slider ABS lapping, the same coefficient of thermal expansion (CTE) as well as the same Bs. Optionally, the trailing shield may be formed on a high Bs seed layer to provide the write head with improved down-track performance.

    摘要翻译： 垂直磁记录（PMR）头被制造成具有由一对侧屏蔽横向屏蔽的主极，屏蔽在后面并由屏蔽罩屏蔽并且被前屏蔽罩屏蔽。 其形成的屏蔽层和种子层由具有相同物理特性的材料形成，包括相同的材料组成，相同的硬度，对离子束蚀刻（IBE），化学机械抛光（CMP） ），机械研磨，如滑块ABS研磨，相同的热膨胀系数（CTE）以及相同的Bs。 可选地，后屏蔽可以形成在高Bs种子层上，以向写头提供改进的下行轨迹性能。

    Method of forming a PMR writer device with multi-level tapered write pole
    9.
    发明授权
    Method of forming a PMR writer device with multi-level tapered write pole 有权
    用多级锥形写柱形成PMR写入器的方法

    公开(公告)号：US09105287B2

    公开(公告)日：2015-08-11

    申请号：US13608308

    申请日：2012-09-10

    申请人： Zhigang Bai ,  Kowang Liu ,  Yan Wu ,  Moris Dovek

    发明人： Zhigang Bai ,  Kowang Liu ,  Yan Wu ,  Moris Dovek

    IPC分类号： G11B5/127 ,  G11B5/31 ,  G11B5/39

    CPC分类号： G11B5/398 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/3183 ,  G11B5/3186 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49048

    摘要： A method of fabricating a perpendicular magnetic recording (PMR) head with a multi-level tapered write pole which creates an efficient channeling of magnetic flux to the pole tip. A tapered bottom yoke is first formed in an etched substrate and a write pole is formed on the tapered bottom yoke. The write pole comprises a main pole with a tapered tip. A tapered top yoke is then formed on the write pole and symmetrically positioned relative to the bottom yoke. The edge of each yoke is recessed from the ABS of the tapered tip, giving the write pole a stepped profile. The tapered tip can be two sloped surfaces that are symmetric about a mid-plane of the main pole or a single sloped edge on the leading side or the trailing side of the pole.

    摘要翻译： 一种制造具有多级锥形写磁极的垂直磁记录（PMR）磁头的方法，其产生磁极到极尖的有效沟道。 首先在蚀刻的衬底中形成锥形底部磁轭，并且在锥形底部磁轭上形成写入磁极。 写入极包括具有锥形尖端的主极。 然后，锥形顶部磁轭形成在写入磁极上并相对于底部磁轭对称地定位。 每个轭的边缘从锥形尖端的ABS凹入，给写极一个阶梯轮廓。 锥形尖端可以是关于主极的中间平面对称的两个倾斜表面或在极的前侧或后侧的单个倾斜边缘。

    PMR writer device with multi-level tapered write pole
    10.
    发明授权
    PMR writer device with multi-level tapered write pole 有权
    PMR写入器，具有多级锥形写入极

    公开(公告)号：US08670212B2

    公开(公告)日：2014-03-11

    申请号：US13608321

    申请日：2012-09-10

    申请人： Zhigang Bai ,  Kowang Liu ,  Yan Wu ,  Moris Dovek

    发明人： Zhigang Bai ,  Kowang Liu ,  Yan Wu ,  Moris Dovek

    IPC分类号： G11B5/31

    CPC分类号： G11B5/398 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/3183 ,  G11B5/3186 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49048

    摘要： A perpendicular magnetic recording (PMR) head is fabricated with a multi-level tapered write pole. The write pole comprises a main pole with a tapered tip on a leading edge or a trailing edge, on which is formed at least one yoke that has a tapered edge. The edge of the yoke is recessed from the ABS of the main pole, giving the head a stepped profile. The yoke can be a single yoke formed on one side of the main pole or it can be two yokes formed on both the leading and trailing sides of the main pole. The write pole structure creates an efficient channeling of magnetic flux to the ABS surface of the pole tip which produces magnetic recording field at high area densities.

    摘要翻译： 垂直磁记录（PMR）头用多级锥形写柱制造。 写极包括在前缘或后缘具有锥形尖端的主极，在其上形成有至少一个具有锥形边缘的轭。 轭的边缘从主极的ABS凹入，使头部呈阶梯状。 轭可以是形成在主极的一侧上的单个磁轭，或者它可以是形成在主极的前侧和后侧的两个轭。 写磁极结构产生磁通量到磁极尖端的ABS表面的有效的通道，其产生高区域密度的磁记录场。