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    • 1. 发明授权
    • Magnetic recording head with resistive heating element located near the write coil
    • 具有位于写入线圈附近的电阻加热元件的磁记录头
    • US07729087B1
    • 2010-06-01
    • US12103183
    • 2008-04-15
    • Kroum S. StoevSuping SongTao Pan
    • Kroum S. StoevSuping SongTao Pan
    • G11B5/187G11B5/58
    • G11B5/6064G11B5/3133G11B5/607
    • A magnetic head includes a slider body having a trailing surface meeting an air-bearing surface at a trailing edge and a thin-film transducer that includes a magnetic reproducing element with a magnetoresistive (MR) element disposed near the trailing edge within a gap material bounded by upper and lower shield layers. The thin-film transducer also includes a lower pole layer of a magnetic recording element disposed in a first general plane. The magnetic recording element further includes a coil having first and second turn layers disposed in second and third general planes, respectively. The magnetic head also includes resistive heating element with at least a portion of the heating element being disposed in a fourth general plane beneath both the lower pole layer and the coil but above the upper shield layer. Current flow through the heating element causes expansion of the magnetic reproducing and recording elements at the ABS.
    • 磁头包括具有在后缘处与空气轴承表面相遇的后表面的滑块主体和薄膜换能器,该薄膜换能器包括具有磁阻(MR)元件的磁性再现元件,所述磁性再现元件设置在边界附近的间隙材料边界内 通过上下屏蔽层。 薄膜换能器还包括设置在第一通用平面中的磁记录元件的下极层。 磁记录元件还包括具有分别设置在第二和第三通用平面中的第一和第二转向层的线圈。 磁头还包括电阻加热元件,其中加热元件的至少一部分设置在下极层和线圈之下但在上屏蔽层之上的第四通用平面中。 通过加热元件的电流使ABS的磁再现和记录元件膨胀。
    • 3. 发明授权
    • PMR head with an angled stitch layer
    • PMR头与一个角度的缝合层
    • US08537494B1
    • 2013-09-17
    • US11935508
    • 2007-11-06
    • Tao PanYugang WangKroum S. Stoev
    • Tao PanYugang WangKroum S. Stoev
    • G11B5/127
    • G11B5/1278G11B5/3116G11B5/313G11B5/3146G11B5/315G11B5/3163
    • A method and system for providing a magnetic transducer having an air-bearing surface (ABS) are described. The magnetic transducer includes a perpendicular magnetic recording (PMR) pole, an additional pole, a stitch, a shield, a write gap between the PMR pole and a portion of the shield, and at least one coil that energizes at least the additional pole. The PMR pole has a first front portion proximate to the ABS, while the additional pole is recessed from the ABS. The stitch resides between the PMR pole and the additional pole and has a stitch front portion between the front portion of the PMR pole and the additional pole. At least a portion of the write gap resides on the front portion of the PMR pole. At least a portion of the additional pole resides between the PMR pole and the shield.
    • 描述了一种用于提供具有空气轴承表面(ABS)的磁换能器的方法和系统。 磁换能器包括垂直磁记录(PMR)极,附加极,线迹,屏蔽,PMR极与屏蔽的一部分之间的写间隙,以及至少一个激励至少附加极的线圈。 PMR杆具有靠近ABS的第一前部,而附加杆从ABS凹入。 该线圈位于PMR极和附加极之间,并且在PMR极的前部和附加极之间具有针迹前部。 写入间隙的至少一部分位于PMR极的前部。 附加极点的至少一部分位于PMR极与屏蔽之间。
    • 6. 发明授权
    • Conformal high moment side shield seed layer for perpendicular magnetic recording writer
    • 用于垂直磁记录刻录机的保形高力侧屏蔽种子层
    • US08724259B1
    • 2014-05-13
    • US13493903
    • 2012-06-11
    • Feng LiuDehua HanYugang WangZhigang BaiTao Pan
    • Feng LiuDehua HanYugang WangZhigang BaiTao Pan
    • G11B5/147
    • G11B5/11G11B5/1278G11B5/23G11B5/3116G11B5/315G11B5/4886
    • A perpendicular magnetic recording writer for use in a data storage device, the recording transducer has a magnetic writer pole, a pole tip facing an air bearing surface (ABS). The pole tip has a pole face, leading side wall, a trailing side wall, a first side wall and a second side wall. A trailing side wall nonmagnetic gap layer on the trailing side wall, a first side wall nonmagnetic gap layer deposited on the first side wall, and a second side wall nonmagnetic gap layer deposited on the second side wall. A high magnetic moment seed layer is deposited on the trailing side wall nonmagnetic gap layer, the first side wall nonmagnetic gap layer, and the second side wall nonmagnetic gap layer. In other aspects of the invention shields are provided that have magnetic moments less than the magnetic moment of the seed layers.
    • 一种在数据存储装置中使用的垂直磁记录刻录机,记录换能器具有磁写入极,极尖面向空气轴承表面(ABS)。 极尖具有极面,前侧壁,后侧壁,第一侧壁和第二侧壁。 在后侧壁上的后侧壁非磁性间隙层,沉积在第一侧壁上的第一侧壁非磁性间隙层和沉积在第二侧壁上的第二侧壁非磁性间隙层。 在后侧壁非磁性间隙层,第一侧壁非磁性间隙层和第二侧壁非磁性间隙层上沉积高磁矩种子层。 在本发明的其它方面,提供了具有小于种子层的磁矩的磁矩的屏蔽。
    • 7. 发明授权
    • Systems and methods for providing stacked writer leads for magnetic transducers
    • 用于为磁换能器提供堆叠式写入器引线的系统和方法
    • US08693141B1
    • 2014-04-08
    • US13291766
    • 2011-11-08
    • Carl F. ElliottZhigang BaiTao Pan
    • Carl F. ElliottZhigang BaiTao Pan
    • G11B5/48
    • G11B5/4853G11B5/17
    • Systems and methods for providing stacked writer leads for magnetic transducers used in disk drives are provided. One such system for providing stacked writer leads for a magnetic transducer includes a writer coil for the magnetic transducer, a first pad on the magnetic transducer, a second pad on the magnetic transducer, a first circuit trace coupled to the first pad and a first terminal of the writer coil, and a second circuit trace coupled to the second pad and a second terminal of the writer coil, where a preselected length of the first circuit trace and the second circuit trace is configured in a stacked configuration where each of the preselected lengths of the first circuit trace and the second circuit trace is positioned at about the same location in spaced apart planes.
    • 提供了用于为磁盘驱动器中使用的磁换能器提供堆叠写入引线的系统和方法。 一种用于提供用于磁换能器的堆叠写入器引线的这种系统包括用于磁换能器的写入器线圈,磁换能器上的第一焊盘,磁换能器上的第二焊盘,耦合到第一焊盘的第一电路迹线和第一端 以及耦合到第二焊盘的第二电路迹线和写入器线圈的第二端子,其中第一电路迹线和第二电路迹线的预选长度被配置为堆叠配置,其中每个预选长度 并且第二电路迹线位于间隔开的平面中的大致相同的位置处。
    • 8. 发明授权
    • Characterizing magnetic recording parameters of a disk drive by evaluating track profile of dual microtracks
    • 通过评估双微轨道的轨迹轮廓来表征磁盘驱动器的磁记录参数
    • US08625224B1
    • 2014-01-07
    • US13464724
    • 2012-05-04
    • Enhao LinShaoping LiTao Pan
    • Enhao LinShaoping LiTao Pan
    • G11B5/02
    • G11B5/012G11B5/455G11B5/5534G11B5/59655
    • A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks. The head is positioned over a track minus a first delta and a first frequency pattern is written at a first frequency. The head is positioned over the track plus a second delta and a second frequency pattern is written at a second frequency different from the first frequency. After writing the first frequency pattern and second frequency pattern, a third frequency pattern is written substantially centered on the track at a third frequency. After writing the third frequency pattern, the head is scanned across the track while reading the disk to generate a read signal. A first frequency component is extracted from the read signal representing the first frequency, and a second frequency component is extracted from the read signal representing the second frequency.
    • 公开了一种磁盘驱动器,包括在包括多个轨道的盘上致动的磁头。 头部位于轨道上减去第一增量,并且以第一频率写入第一频率模式。 头部位于轨道上方加上第二增量,第二频率图案以不同于第一频率的第二频率被写入。 在写入第一频率模式和第二频率模式之后,以第三频率将第三频率模式写入基本上以轨道为中心。 在写入第三频率模式之后,读取磁盘时头部扫描轨迹以产生读取信号。 从表示第一频率的读取信号中提取第一频率分量,并从表示第二频率的读取信号中提取第二频率分量。