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    Magnetic write head design for reducing temperature induced protrusion
    1.
    发明申请
    Magnetic write head design for reducing temperature induced protrusion 有权
    磁写头设计用于降低温度引起的突起

    公开(公告)号：US20070247750A1

    公开(公告)日：2007-10-25

    申请号：US11411590

    申请日：2006-04-25

    申请人： Wen-Chien Hsiao ,  Yimin Hsu ,  Edward Lee ,  Vladimir Nikitin ,  Katalin Pentek

    发明人： Wen-Chien Hsiao ,  Yimin Hsu ,  Edward Lee ,  Vladimir Nikitin ,  Katalin Pentek

    IPC分类号： G11B5/147

    CPC分类号： G11B5/1278 ,  G11B5/3133 ,  G11B5/3136

    摘要： A magnetic write pole having a structure that prevents thermally induced pole tip protrusion. The write head has a return pole with a magnetic pedestal formed at the air bearing surface (ABS) and a back gap at an end opposite the ABS. An electrically conductive write coil having a plurality of turns passes over the return pole. A fill layer of a material having a low coefficient of thermal expansion, such as alumina is disposed between the coil and the pedestal, and may extend over the top of the coil to the back gap. A photoresist coil insulation layer may be provided between the turns of the coil to insulate the turns of the coil from one another. The photoresist coil insulation layer can also extend to the back gap. A write pole, formed above the return pole and coil is magnetically connected with the back gap layer and return pole by a magnetic shaping layer.

    摘要翻译： 具有防止热感应极尖突出的结构的磁性写入极。 写头具有在空气轴承表面（ABS）形成的磁性基座的返回极和与ABS相对的一端的后部间隙。 具有多个匝的导电写入线圈通过返回极。 具有低热膨胀系数的材料的填充层（例如氧化铝）设置在线圈和基座之间，并且可以在线圈的顶部延伸到后部间隙。 可以在线圈的匝之间设置光致抗蚀剂线圈绝缘层，以将线圈的匝彼此绝缘。 光致抗蚀剂线圈绝缘层也可以延伸到后隙。 在返回极和线圈之上形成的写极通过磁性成形层与后间隙层和返回极磁连接。

    Magnetic head having a write coil structure with a reduced electrical resistance for reducing thermal protrusion
    2.
    发明申请
    Magnetic head having a write coil structure with a reduced electrical resistance for reducing thermal protrusion 有权

    公开(公告)号：US20060152849A1

    公开(公告)日：2006-07-13

    申请号：US11375160

    申请日：2006-03-14

    申请人： Wen-chien Hsiao ,  Edward Lee ,  Vladimir Nikitin ,  Samuel Yuan

    发明人： Wen-chien Hsiao ,  Edward Lee ,  Vladimir Nikitin ,  Samuel Yuan

    IPC分类号： G11B5/17

    CPC分类号： G11B5/3136 ,  G11B5/012 ,  G11B5/17 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/40

    摘要： Magnetic heads having write coil structures with reduced electrical resistances for reducing thermal protrusion are disclosed. In one illustrative example, a magnetic head includes a magnetic yoke; a write gap layer formed between upper and lower poles of the magnetic yoke; and a write coil having a plurality of coil layers. Each coil layer of the write coil extends continuously between the upper and the lower poles through a plane defined by the write gap layer. Preferably, the write coil is formed using a damascene process, such that each coil layer is wider than each coil separating layer. Such a structure provides for a relatively large amount of coil materials to be used, which reduces the coil's electrical resistance. This, in turn, reduces the heat generated by the write coils during operation. Further, either one or both of the lower and upper poles may include a horizontally laminated structure of alternating magnetic and non-magnetic dielectric layers to further reduce heating caused by eddy current losses. Since thermal protrusion is reduced, the fly height of magnetic head may be made relatively small with a reduced risk of head-to-disk crashes and disk scratches.

    Magnetic head having a write coil structure with a reduced electrical resistance for reducing thermal protrusion
    4.
    发明申请
    Magnetic head having a write coil structure with a reduced electrical resistance for reducing thermal protrusion 失效
    磁头具有具有降低的电阻降低热突起的写入线圈结构

    公开(公告)号：US20050024764A1

    公开(公告)日：2005-02-03

    申请号：US10629060

    申请日：2003-07-29

    申请人： Wen-Chien Hsiao ,  Edward Lee ,  Vladimir Nikitin ,  Samuel Yuan

    发明人： Wen-Chien Hsiao ,  Edward Lee ,  Vladimir Nikitin ,  Samuel Yuan

    IPC分类号： G11B5/17 ,  G11B5/012 ,  G11B5/31 ,  G11B5/40

    CPC分类号： G11B5/3136 ,  G11B5/012 ,  G11B5/17 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/40

    摘要： Magnetic heads having write coil structures with reduced electrical resistances for reducing thermal protrusion are disclosed. In one illustrative example, a magnetic head includes a magnetic yoke; a write gap layer formed between upper and lower poles of the magnetic yoke; and a write coil having a plurality of coil layers. Each coil layer of the write coil extends continuously between the upper and the lower poles through a plane defined by the write gap layer. Preferably, the write coil is formed using a damascene process, such that each coil layer is wider than each coil separating layer. Such a structure provides for a relatively large amount of coil materials to be used, which reduces the coil's electrical resistance. This, in turn, reduces the heat generated by the write coils during operation. Further, either one or both of the lower and upper poles may include a horizontally laminated structure of alternating magnetic and non-magnetic dielectric layers to further reduce heating caused by eddy current losses. Since thermal protrusion is reduced, the fly height of magnetic head may be made relatively small with a reduced risk of head-to-disk crashes and disk scratches.

    摘要翻译： 公开了具有降低的电阻以减少热突起的具有写入线圈结构的磁头。 在一个说明性示例中，磁头包括磁轭; 形成在磁轭的上下极之间的写间隙层; 以及具有多个线圈层的写入线圈。 写入线圈的每个线圈层通过由写入间隙层限定的平面在上极和下极之间连续延伸。 优选地，写入线圈使用镶嵌工艺形成，使得每个线圈层比每个线圈分离层宽。 这种结构提供了相对大量的待使用的线圈材料，这降低了线圈的电阻。 这又减少了在操作期间由写入线圈产生的热量。 此外，下极和上极中的一个或两个可以包括交替的磁和非磁性介电层的水平层叠结构，以进一步减少由涡流损耗引起的加热。 由于热突起减少，所以磁头的飞行高度可以相对较小，同时降低了磁头与磁盘的碰撞和磁盘划痕的风险。

    Write head design with improved bump to control write saturation
    5.
    发明申请
    Write head design with improved bump to control write saturation 失效
    写头设计具有改进的凸块来控制写入饱和度

    公开(公告)号：US20050083606A1

    公开(公告)日：2005-04-21

    申请号：US10687284

    申请日：2003-10-15

    申请人： Edward Lee ,  Katalin Pentek ,  Yong Shen ,  Sue Zhang

    发明人： Edward Lee ,  Katalin Pentek ,  Yong Shen ,  Sue Zhang

    IPC分类号： G11B5/127 ,  G11B5/147 ,  G11B5/60

    CPC分类号： G11B5/60 ,  G11B5/127 ,  G11B5/147

    摘要： A magnetic head having an air bearing surface (ABS) and a first pole tip. A second pole tip is spaced apart from and facing the upper end of the first pole tip across a write gap. A bump extends into a portion of the upper end of the first pole tip and a portion of the bottom end of the second pole tip, the bump being positioned away from the ABS. The bump defines a throat height of the first and second pole tips.

    摘要翻译： 具有空气轴承表面（ABS）和第一极端的磁头。 第二极尖与间隙隔开并面对第一极尖的上端。 凸块延伸到第一极尖端的上端的一部分和第二极尖的底端的一部分，凸块被定位成远离ABS。 凸块限定第一和第二极尖的喉部高度。

    Method for creating inductive write head with steep shoulder at notch
    6.
    发明申请
    Method for creating inductive write head with steep shoulder at notch 失效
    在凹口处创建具有陡肩的感应写头的方法

    公开(公告)号：US20050023243A1

    公开(公告)日：2005-02-03

    申请号：US10632631

    申请日：2003-07-31

    申请人： Edward Lee ,  Aron Pentek ,  Wen-Chien Hsiao

    发明人： Edward Lee ,  Aron Pentek ,  Wen-Chien Hsiao

    IPC分类号： G11B5/187 ,  G11B5/31 ,  B44C1/22

    CPC分类号： G11B5/1877 ,  G11B5/3163

    摘要： A method for fabricating a magnetic head using a modified P1 cap process. A first pole is formed. A cap is formed above the first pole. A gap layer is formed above the cap. A second pole is formed above the gap layer. Exposed portions of the gap layer are removed. The cap and first pole are milled for creating a shoulder of the first pole tapered upwardly towards the cap. Another method for fabricating a magnetic head includes forming a first pole, forming a gap layer above the first pole, forming a second pole above the gap layer, forming a layer of photoresist above the second pole, patterning the photoresist such that the photoresist covers areas of the gap layer positioned towards the second pole, removing exposed portions of the gap layer, removing part of exposed portions of the first pole for forming steps in the first pole on opposite sides of the photoresist, removing the photoresist, and milling for creating a shoulder of the first pole tapering upwardly towards the cap.

    摘要翻译： 一种使用改进的P1盖过程制造磁头的方法。 形成第一极。 在第一极上方形成帽。 在盖上方形成间隙层。 在间隙层上方形成第二极。 去除间隙层的露出部分。 铣头和第一杆被铣削以产生第一杆的肩部向上朝向帽部锥形。 制造磁头的另一方法包括形成第一极，在第一极上方形成间隙层，在间隙层上方形成第二极，在第二极上形成光致抗蚀剂层，使光致抗蚀剂覆盖区域 间隔层定位成朝向第二极，去除间隙层的暴露部分，去除第一极的暴露部分的一部分，以在光致抗蚀剂的相对侧上的第一极中形成台阶，去除光致抗蚀剂，并研磨以产生 第一杆的肩部朝向帽部向上逐渐变细。

    Apparatus for patterning a self-aligned coil using a damascene process
    7.
    发明申请
    Apparatus for patterning a self-aligned coil using a damascene process 有权
    用于使用镶嵌工艺图案化自对准线圈的装置

    公开(公告)号：US20050047014A1

    公开(公告)日：2005-03-03

    申请号：US10652877

    申请日：2003-08-29

    申请人： Daniel Bedell ,  Quang Le ,  Edward Lee ,  Son Nguyen ,  Vladimir Nikitin ,  Murali Ramasubramanian

    发明人： Daniel Bedell ,  Quang Le ,  Edward Lee ,  Son Nguyen ,  Vladimir Nikitin ,  Murali Ramasubramanian

    IPC分类号： G11B5/127 ,  G11B5/147

    CPC分类号： G11B5/127

    摘要： An apparatus for patterning a self-aligned coil using a damascene process is disclosed. Coil pockets are formed in a first insulation layer disposed over a first pole layer. A barrier/seed layer is deposited along walls of the coil pockets in the insulation layer. Copper is formed in the coil pockets and over the insulation layer. The copper is planarized down to the insulation layer. The self-aligned coil process packs more copper into the same coil pocket and relaxes the coil alignment tolerance. Protrusions are prevented because of the more efficient and uniform spacing of the coil to reduce heat buildup in the head during a write.

    摘要翻译： 公开了一种使用镶嵌工艺图案化自对准线圈的装置。 在设置在第一极层上的第一绝缘层中形成线圈腔。 隔离层/籽晶层沿绝缘层中的线圈袋的壁被沉积。 在线圈袋中形成铜，并在绝缘层上形成铜。 铜平坦化到绝缘层。 自对准线圈工艺将更多的铜包装到相同的线圈袋中，并松弛线圈对准公差。 由于在写入期间线圈的间隔更加有效和均匀以减少头部的积聚，所以防止了突起。

    Well use of space for low resistance coil design for write head
    8.
    发明申请
    Well use of space for low resistance coil design for write head 审中-公开
    良好的空间用于低电阻线圈设计的写头

    公开(公告)号：US20060065620A1

    公开(公告)日：2006-03-30

    申请号：US11280846

    申请日：2005-11-15

    申请人： Edward Lee ,  Vladimir Nikitin

    发明人： Edward Lee ,  Vladimir Nikitin

    IPC分类号： B44C1/22 ,  C03C15/00 ,  G11B5/127 ,  G11B5/33

    CPC分类号： G11B5/3116 ,  G11B5/17 ,  G11B5/313 ,  G11B5/3136 ,  G11B5/3163 ,  G11B5/3967 ,  H01F41/041

    摘要： In one embodiment of the present invention, a write head includes a P2 pole tip, a back gap layer, and a first insulation layer applied on top and in between the P2 pole tip and the back gap layer. Coil, formed of copper, is developed on top of the first insulation layer and extends below the top of the P2 pole tip, a second insulation layer pancakes the coil to insulate it. A P3 magnetic layer is formed on top of the second insulation layer, the coil reducing coil resistance yet avoiding shorting with the P3 magnetic layer.

    摘要翻译： 在本发明的一个实施例中，写头包括P 2极尖，后间隙层和施加在P 2极尖和后间隙层之间的顶部和之间的第一绝缘层。 由铜形成的线圈被开发在第一绝缘层的顶部并且在P 2极端部的顶部下方延伸，第二绝缘层将线圈压扁以使其绝缘。 P 3磁性层形成在第二绝缘层的顶部，线圈减少线圈的电阻仍然避免与P 3磁性层的短路。