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    Magnetic recording heads having thin thermally conductive undercoating
    1.
    发明授权
    Magnetic recording heads having thin thermally conductive undercoating 失效
    具有薄导热底涂层的磁记录头

    公开(公告)号：US07035047B2

    公开(公告)日：2006-04-25

    申请号：US10271293

    申请日：2002-10-15

    申请人： Wen-Chien Hsiao ,  Peter Beverley Powell Phipps ,  Yong Shen ,  John Jaekoyun Yang ,  Samuel Wei-san Yuan

    发明人： Wen-Chien Hsiao ,  Peter Beverley Powell Phipps ,  Yong Shen ,  John Jaekoyun Yang ,  Samuel Wei-san Yuan

    IPC分类号： G11B5/147

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/3103 ,  G11B5/3106 ,  G11B5/3133 ,  G11B5/3136 ,  G11B5/332 ,  G11B5/3967 ,  G11B5/40 ,  G11B2005/3996

    摘要： A magnetic head having read and write elements is provided according to one embodiment. The head includes a substrate. An undercoating is coupled to the substrate. The undercoating has a preferred thickness of between about 1.5 and 0.5 microns or less in a direction perpendicular to the planar surface of the substrate engaging the undercoating. Preferably, the undercoating is reduced to a desired thickness during fabrication using chemical mechanical polishing. The undercoating is constructed of a material having a thermal conductivity greater than that of amorphous Al2O3. An electric contact pad is operatively coupled to a layer positioned between the pad and the undercoating. Electric contact pads of read and write elements are preferably separated from the undercoating by insulation planarization layers. A write element is coupled to the undercoating. The write element has an electrically conductive coil. The new thinner and more thermally conductive undercoating allows more heat to transfer through it from the write element to the substrate.

    摘要翻译： 根据一个实施例，提供具有读和写元件的磁头。 头包括基底。 底涂层与基底结合。 底涂层在垂直于与底涂层接触的基材的平坦表面的方向上具有约1.5至0.5微米或更小的优选厚度。 优选地，在使用化学机械抛光的制造期间，底涂层被还原成所需的厚度。 底涂层由热导率大于无定形Al 2 O 3 3的材料构成。 电接触垫可操作地耦合到位于垫和底涂层之间的层。 读取和写入元件的电接触焊盘优选通过绝缘平坦化层与底涂层分离。 写入元件耦合到底涂层。 写入元件具有导电线圈。 新的更薄且更热导热的底涂层允许更多的热量从写入元件转移到衬底。

    Crack resistant magnetic write head
    3.
    发明授权
    Crack resistant magnetic write head 失效
    耐开磁磁头

    公开(公告)号：US5880915A

    公开(公告)日：1999-03-09

    申请号：US731816

    申请日：1996-10-21

    申请人： Edward Hinpong Lee ,  Peter Beverley Powell Phipps

    发明人： Edward Hinpong Lee ,  Peter Beverley Powell Phipps

    IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/147 ,  G11B5/23

    CPC分类号： G11B5/3967 ,  G11B5/3103 ,  G11B5/3116 ,  G11B5/313

    摘要： The reconfiguration of a magnetic write head minimizes cracking at the ABS. This is accomplished by selectively reconfiguring the front edge of the insulation layer that defines the zero throat height (ZTH) so as to increase the volume of the overcoat layer which interfaces with the reconfigured edge. The front edge of the ZTH-defining insulation layer has a central portion which is centered with respect to the second pole tip and first and second lateral portions which are on each side of the front portion and parallel to the ABS. The front edge portion is recessed from the ABS a distance appropriate for defining the ZTH between the first and second pole pieces of the write head. The first and second lateral edges are further recessed into the head so as to increase the volume of the overcoat layer between the ABS and the first and second lateral edges. The increased volume of the overcoat layer better absorbs stresses and strains due to shock loading and temperature so as to reduce cracking of the head at the ABS.

    摘要翻译： 磁性写入头的重新配置使ABS的开裂最小化。 这通过选择性地重新配置限定零喉部高度（ZTH）的绝缘层的前边缘来实现，以便增加与重新配置的边缘相连接的外涂层的体积。 ZTH限定绝缘层的前边缘具有中心部分，该中心部分相对于第二极端部居中，第一和第二侧部分位于前部的每一侧并平行于ABS。 前边缘部分从ABS凹入一个适合于限定写头的第一和第二极片之间的ZTH的距离。 第一和第二侧边缘进一步凹入头部，以增加ABS与第一和第二横向边缘之间的外涂层的体积。 外涂层的体积增加更好地吸收由于冲击载荷和温度引起的应力和应变，从而减少ABS在头部的开裂。

    Slurry for multi-material chemical mechanical polishing
    4.
    发明授权
    Slurry for multi-material chemical mechanical polishing 失效
    浆料用于多材料化学机械抛光

    公开(公告)号：US06554878B1

    公开(公告)日：2003-04-29

    申请号：US09332490

    申请日：1999-06-14

    申请人： Frederick Hayes Dill, Jr. ,  Eric James Lee ,  Peter Beverley Powell Phipps

    发明人： Frederick Hayes Dill, Jr. ,  Eric James Lee ,  Peter Beverley Powell Phipps

    IPC分类号： C09G102

    CPC分类号： C09G1/02

    摘要： In a first aspect a slurry is provided for chemically mechanically polishing alumina and nickel iron to a common plane and in a second aspect a slurry is provided for additionally chemically mechanically polishing copper to a common plane. The slurry includes a first concentration of colloidal silica, a second concentration of potassium and/or sodium persulfate and a third concentration of ammonium persulfate. In the first aspect the first and second concentrations are tailored to chemically mechanically polish the alumina and the nickel iron at the same rate to a common plane and in the second aspect the slurry includes a third concentration of ammonium persulfate at a proper ratio to the potassium or sodium persulfate to chemically mechanically polish the copper at the same rate as the other materials to the same plane.

    摘要翻译： 在第一方面，提供了用于将氧化铝和镍铁化学机械抛光到公共平面的浆料，并且在第二方面，提供了用于将铜附加地化学机械抛光到共同平面的浆料。 浆料包括第一浓度的胶体二氧化硅，第二浓度的钾和/或过硫酸钠和第三浓度的过硫酸铵。 在第一方面，第一和第二浓度被定制成以与普通平面相同的速率化学机械抛光氧化铝和镍铁，并且在第二方面，浆料包括与钾的适当比例的第三浓度的过硫酸铵 或过硫酸钠以与其他材料相同的速率将铜化学机械抛光到同一平面。

    Method of making crack resistant magnetic write head
    7.
    发明授权
    Method of making crack resistant magnetic write head 失效
    制造耐磨写磁头的方法

    公开(公告)号：US06221559B1

    公开(公告)日：2001-04-24

    申请号：US09222480

    申请日：1998-12-29

    申请人： Edward Hinpong Lee ,  Peter Beverley Powell Phipps

    发明人： Edward Hinpong Lee ,  Peter Beverley Powell Phipps

    IPC分类号： G03F720

    CPC分类号： G11B5/3967 ,  G11B5/3103 ,  G11B5/3116 ,  G11B5/313

    摘要： The front edge of the a zero throat height (ZTH) defining insulation layer in a magnetic head is formed with a central portion which is centered with respect to a second pole tip with first and second lateral portions which are on each side of the central portion and parallel to the ABS. The central portion is recessed from the ABS a distance appropriate for defining the ZTH between the first and second pole pieces of the head and the first and second lateral edges are further recessed into the head so as to increase the volume of the overcoat layer between the ABS and the first and second lateral edges. The increased volume of the overcoat layer better absorbs stresses and strains due to shock loading and temperature so as to reduce cracking of the head at the ABS.

    摘要翻译： 在磁头中限定绝缘层的零喉部高度（ZTH）的前边缘形成有中心部分，该中心部分相对于第二极端部居中，第一和第二侧向部分在中心部分的每一侧 并与ABS平行。 中心部分从ABS凹入一定距离，用于限定头部的第一和第二极片之间的ZTH，并且第一和第二侧边缘进一步凹入头部，以便增加外罩层之间的体积 ABS和第一和第二侧边缘。 外涂层的体积增加更好地吸收由于冲击载荷和温度引起的应力和应变，从而减少ABS在头部的开裂。

    Method of using an etchant solution for removing a thin metallic layer
    8.
    发明授权
    Method of using an etchant solution for removing a thin metallic layer 失效
    使用蚀刻剂溶液去除薄金属层的方法

    公开(公告)号：US07087183B2

    公开(公告)日：2006-08-08

    申请号：US11165728

    申请日：2005-06-24

    申请人： Peter Beverley Powell Phipps

    发明人： Peter Beverley Powell Phipps

    IPC分类号： B44C1/22

    CPC分类号： G11B5/3163 ,  C23F1/02 ,  C23F1/16 ,  C23F1/42 ,  G11B5/313 ,  H05K3/064 ,  H05K3/067 ,  H05K3/108 ,  H05K2203/1476

    摘要： A method for removing a thin metallic layer using an etchant solution is provided for essentially eliminating undercutting in a thin metallic layer such as a seed layer in a magnetic recording head. The etchant solution has a suitable solvent additive such as glycerol or methyl cellulose. With suitable solvent additives, which generally increase solvent viscosity, lateral etching rates are similar to surface etch rates and undercutting is essentially eliminated.

    摘要翻译： 提供了使用蚀刻剂溶液去除薄金属层的方法，用于基本上消除诸如磁记录头中的种子层的薄金属层中的底切。 蚀刻剂溶液具有合适的溶剂添加剂如甘油或甲基纤维素。 使用合适的溶剂添加剂，其通常增加溶剂粘度，横向蚀刻速率与表面蚀刻速率相似，并且基本上消除了底切。