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    Insertion under read shield for improved read gap actuation in dynamic flying height
    123.
    发明授权
    Insertion under read shield for improved read gap actuation in dynamic flying height 有权
    在读屏蔽下插入，以改善动态飞行高度的读取间隙驱动

    公开(公告)号：US08810962B2

    公开(公告)日：2014-08-19

    申请号：US12455758

    申请日：2009-06-05

    申请人： Yan Wu ,  Kowang Liu

    发明人： Yan Wu ,  Kowang Liu

    IPC分类号： G11B5/10 ,  G11B5/31 ,  G11B5/60 ,  G11B5/127

    CPC分类号： G11B5/3133 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/6005 ,  G11B5/6064 ,  Y10T428/1193

    摘要： A read/write head is disclosed wherein a non-magnetic layer made of a metal is inserted in the read head on a side opposite to the S1 shield with respect to the sensor. The non-magnetic layer is preferably Cu and is recessed from the ABS to prevent corrosion. A preferred design has a 1 to 5 micron thick non-magnetic insertion layer that extends a distance of 3 to 100 microns along a plane that is perpendicular to the ABS. RG efficiency is enhanced significantly and RG gamma ratio is improved to 1.0 so that a smaller difference in RG, WG, and min-fly point can be achieved at touchdown detection and in normal read/write operations. These results lead to an optimal dynamic performance for a given spacing target and enhanced read gap protrusion at a given heater power. S1/S2A thickness can be independently optimized for magnetic performance consideration only.

    摘要翻译： 公开了一种读/写头，其中由金属制成的非磁性层相对于传感器插入到与S1屏蔽相反的一侧的读头中。 非磁性层优选为Cu，并且从ABS凹入以防止腐蚀。 优选的设计具有1至5微米厚的非磁性插入层，其沿垂直于ABS的平面延伸3至100微米的距离。 RG效率显着提高，RG伽马比提高到1.0，使得在触地检测和正常读/写操作中可以实现RG，WG和最小飞点之间的较小差异。 这些结果导致给定间隔目标和给定加热器功率下增强的读取间隙突出的最佳动态性能。 S1 / S2A的厚度可以独立地优化磁性能考虑。

    PMR Writer Device with Multi-Level Tapered Write Pole
    128.
    发明申请
    PMR Writer Device with Multi-Level Tapered Write Pole 有权
    具有多级锥形写入极的PMR写入器

    公开(公告)号：US20130003226A1

    公开(公告)日：2013-01-03

    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： G11B5/127 ,  G11B5/147

    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。

    Method of Forming a PMR Writer Device with Multi-Level Tapered Write Pole
    129.
    发明申请
    Method of Forming a PMR Writer Device with Multi-Level Tapered Write Pole 审中-公开
    形成具有多级锥形写入极的PMR写入器器件的方法

    公开(公告)号：US20130001190A1

    公开(公告)日：2013-01-03

    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

    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 which creates an efficient channeling of magnetic flux to the pole tip. The write pole comprises a main pole with a tapered tip 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 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. The yoke structure can consist of a single yoke formed on one side of the main pole or it can consist of two yokes formed symmetrically on both the leading and trailing sides of the main pole.

    摘要翻译： 垂直磁记录（PMR）头由多级锥形写极制造，其产生磁极到磁极尖端的有效沟道。 写入极包括具有锥形尖端的主极，其上形成有至少一个具有锥形边缘的轭。 轭的边缘从锥形尖端的ABS凹入，使写极为阶梯轮廓。 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。 轭结构可以由形成在主极的一侧上的单个磁轭组成，或者可以由在主极的前后两侧对称地形成的两个磁轭组成。

    PMR writer device with multi-level tapered write pole
    130.
    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：US08264792B2

    公开(公告)日：2012-09-11

    申请号：US12387534

    申请日：2009-05-04

    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 for efficient channeling of magnetic flux. The write pole comprises a main pole with a tapered tip 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 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. The yoke structure can consist of a single yoke formed on one side of the main pole or it can consist of two yokes formed symmetrically on both the leading and trailing sides of the main pole.

    摘要翻译： 垂直磁记录（PMR）头由多级锥形写极制造，用于磁通的高效通道。 写入极包括具有锥形尖端的主极，其上形成有至少一个具有锥形边缘的轭。 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。 轭结构可以由形成在主极的一侧上的单个磁轭组成，或者可以由在主极的前后两侧对称地形成的两个磁轭组成。