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    • 1. 发明授权
    • Carbon overcoat for a slider with improved step coverage
    • 用于滑块的碳涂层,具有改进的台阶覆盖
    • US5943187A
    • 1999-08-24
    • US878976
    • 1997-06-18
    • Pei C. ChenCherngye HwangVedantham RamanJila Tabib
    • Pei C. ChenCherngye HwangVedantham RamanJila Tabib
    • G11B5/10G11B5/255G11B5/31G11B5/39G11B5/60G11B5/72G11B5/82G11B5/84
    • G11B5/6005G11B5/10G11B5/255G11B5/3106G11B5/3967G11B5/72G11B5/82G11B5/8408
    • A method is provided for applying an overcoat to a slider and sensitive elements of a magnetic head which has improved coverage, reduced spacing loss and improved corrosion resistance. After lapping, an overcoat material is sputter deposited on the air bearing surface (ABS) of the slider, followed by a step of sputter etching the overcoat. The sputter etching redeposits material from high points on the slider and fills in trenches formed during the lapping process. The redeposition of the overcoat from the high places to the low places of the slider decreases the overall thickness of the overcoat, thereby decreasing spacing loss. The filling of the trenches implements increased coverage which increases wear resistance of the slider and more adequately protects the sensitive elements of the magnetic head from corrosion. In a preferred embodiment, a portion of the overcoat is left on the high places to ensure that the sputter etching does not damage the sensitive elements of the magnetic head. If the overcoat is completely etched from the high places an optional second overcoat may be applied which is thinner than the first overcoat. This method may also be applied to other articles such as a magnetic disk.
    • 提供了一种将外涂层施加到滑块和磁头的敏感元件的方法,其具有改进的覆盖范围,减小的间隔损耗和改善的耐腐蚀性。 研磨后,将外涂层材料溅射沉积在滑块的空气轴承表面(ABS)上,随后溅射蚀刻外涂层。 溅射蚀刻从滑块上的高点重新沉积材料,并填充研磨过程中形成的沟槽。 外涂层从滑块的高处重新沉积到滑块的低处降低了外涂层的总厚度,从而减小了间隔损耗。 沟槽的填充实现增加的覆盖,增加滑块的耐磨性,并更充分地保护磁头的敏感元件不被腐蚀。 在优选实施例中,外涂层的一部分留在高处,以确保溅射蚀刻不会损坏磁头的敏感元件。 如果外涂层从高处完全蚀刻,则可以施加比第一外涂层更薄的任选的第二外涂层。 该方法也可以应用于诸如磁盘的其它物品。
    • 8. 发明申请
    • Slider incorporating heaters and ELGs and method of fabrication
    • 带有加热器和ELG的滑块和制造方法
    • US20070230056A1
    • 2007-10-04
    • US11397823
    • 2006-04-03
    • Robert BeachDavid SeagleJila Tabib
    • Robert BeachDavid SeagleJila Tabib
    • G11B5/60
    • G11B5/6064G11B5/6005
    • A slider for a magnetic disk drive is disclosed which includes a heater circuit structure, and at least one ELG circuit structure where a portion of the ELG circuit structure is removable by lapping. The ELG circuit structure is connected electrically in parallel with the heater circuit structure to a common set of electrical contact pads to produce a measured initial parallel resistance as measured at the common set of electrical contact pads. A modified parallel resistance is calculated to correspond to that of the modified individual resistance of the ELG when lapping operation is completed. The resistance is monitored during lapping operations to signal when the appropriate lapping depth is achieved. Also disclosed is a disk drive having the slider, and a method of fabrication for a slider.
    • 公开了一种用于磁盘驱动器的滑动器,其包括加热器电路结构,以及至少一个ELG电路结构,其中ELG电路结构的一部分可通过研磨而移除。 ELG电路结构与加热器电路结构并联连接到一组共同的电接触焊盘,以产生在公共电接触焊盘组测量的测量的初始并联电阻。 当研磨操作完成时,计算修改的并联电阻以对应于ELG的修改的单独电阻。 在研磨操作期间监测电阻,以在达到适当的研磨深度时发出信号。 还公开了具有滑块的盘驱动器及其制造方法。
    • 10. 发明授权
    • Two step resetting of magnetization of spin valve read head at the row
level
    • 自动旋转阀读头在行级两步复位
    • US5974657A
    • 1999-11-02
    • US44428
    • 1998-03-19
    • Ciaran FoxHardayal Singh GillVirgil Simon SperiosuJila Tabib
    • Ciaran FoxHardayal Singh GillVirgil Simon SperiosuJila Tabib
    • G11B5/00G11B5/31G11B5/39G11B5/465G11B5/42
    • B82Y25/00B82Y10/00G11B5/3903G11B5/3932G11B2005/0008G11B2005/3996G11B5/3103G11B5/3113G11B5/3163G11B5/465Y10T29/49034Y10T29/49036Y10T29/49044
    • A method is provided for resetting the magnetization of the pinned and hard biasing layers of a spin valve read head at the row level. In a first embodiment of the invention a first magnetic field is applied substantially perpendicular to the air bearing surface (ABS) at room temperature for setting the magnetic moment of the pinned layer substantially perpendicular to the ABS followed by applying a second magnetic field substantially parallel to the ABS for setting the magnetic moments of the hard biasing layers substantially parallel to the ABS. In a second embodiment of the invention the antiferromagnetic pinning layer is also reset. This is done by heating the pinning layer with a current pulse conducted through the leads to the conductive layers of the spin valve head so that localized heating takes place adjacent the pinning layer as contrasted to ambient heating of the spin valve head. Simultaneous with the localized heating the first magnetic field is applied for orienting the magnetic spins of the pinning layer perpendicular to the ABS and resetting the magnetic moment of the pinned layer perpendicular to the ABS in a single domain state. Subsequently, a second magnetic field is applied for resetting the magnetic moment of the hard biasing layer parallel to the ABS in a single domain state.
    • 提供一种用于在行级别复位自旋阀读头的被钉扎和硬偏置层的磁化的方法。 在本发明的第一实施例中,在室温下基本上垂直于空气轴承表面(ABS)施加第一磁场,用于将被钉扎层的磁矩基本上垂直于ABS,然后施加基本上平行于 用于设置硬偏置层的磁矩基本上平行于ABS的ABS。 在本发明的第二实施例中,反铁磁钉扎层也被复位。 这是通过将导线穿过引线的电流脉冲加热到钉扎层来完成的,所述电流脉冲与自旋阀头的导电层相反,使得与旋转阀头的环境加热相反,在钉扎层附近发生局部加热。 与局部加热同时,施加第一磁场用于定向垂直于ABS的钉扎层的磁自旋,并以单域状态重置垂直于ABS的钉扎层的磁矩。 随后,施加第二磁场以在单个域状态下复位与ABS平行的硬偏置层的磁矩。