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    PMR write with flux choking area
    1.
    发明授权
    PMR write with flux choking area 有权

    公开(公告)号：US08085498B2

    公开(公告)日：2011-12-27

    申请号：US12586249

    申请日：2009-09-17

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

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

    IPC分类号： G11B5/127

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

    摘要： A PMR writer having a trailing shield structure is disclosed in which a flux choking layer (FCL) formed adjacent to the ABS provides a means to limit the amount of flux flowing from the trailing shield to a first write shield (WS1) near the write pole tip thereby significantly reducing adjacent track erasure. The FCL has a substantially smaller thickness than a top section of the trailing shield to which it is attached along a side opposite the ABS. As a result, pole tip protrusion is reduced compared to prior art PMR writers. The FCL contacts a trailing side of WS1 at the ABS and one or both of the trailing sides of the WS1 and FCL may be tapered or perpendicular with respect to the ABS. The top trailing shield section, FCL, and WS1 may be comprised of NiFe, CoFe, CoFeNi, or alloys thereof.

    Method of forming a PMR writer device with multi-level tapered write pole
    2.
    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
    3.
    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。

    PMR writer device with multi-level tapered write pole
    4.
    发明申请
    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：US20100277832A1

    公开(公告)日：2010-11-04

    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： G11B5/127

    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. 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 the taper can be 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. Other yoke/pole combinations are also described as are various shield formations. 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，或者锥形可以是在杆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。 其他轭/杆组合也被描述为各种盾构形式。 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。

    PMR write with flux choking area
    5.
    发明申请
    PMR write with flux choking area 有权
    PMR写入焊剂阻塞区域

    公开(公告)号：US20110063755A1

    公开(公告)日：2011-03-17

    申请号：US12586249

    申请日：2009-09-17

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

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

    IPC分类号： G11B5/10 ,  G11B5/127

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

    摘要： A PMR writer having a trailing shield structure is disclosed in which a flux choking layer (FCL) formed adjacent to the ABS provides a means to limit the amount of flux flowing from the trailing shield to a first write shield (WS1) near the write pole tip thereby significantly reducing adjacent track erasure. The FCL has a substantially smaller thickness than a top section of the trailing shield to which it is attached along a side opposite the ABS. As a result, pole tip protrusion is reduced compared to prior art PMR writers. The FCL contacts a trailing side of WS1 at the ABS and one or both of the trailing sides of the WS1 and FCL may be tapered or perpendicular with respect to the ABS. The top trailing shield section, FCL, and WS1 may be comprised of NiFe, CoFe, CoFeNi, or alloys thereof.

    摘要翻译： 公开了具有拖尾屏蔽结构的PMR写入器，其中与ABS相邻形成的通量阻塞层（FCL）提供了一种将从后屏蔽流过的磁通量限制在写极附近的第一写屏蔽（WS1）的装置 从而显着地减少相邻轨道擦除。 FCL具有比尾部护罩的顶部部分基本上小的厚度，其沿着与ABS相对的一侧被附接到该顶部部分。 结果，与现有技术的PMR写入器相比，极尖突起减小。 FCL在ABS处接触WS1的后侧，并且WS1和FCL的一个或两个后侧可以相对于ABS呈锥形或垂直。 顶部后屏蔽部分FCL和WS1可以由NiFe，CoFe，CoFeNi或其合金组成。

    PMR Writer Device with Multi-Level Tapered Write Pole
    6.
    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
    7.
    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
    8.
    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。