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1. 发明申请

US20070081277A1 Method and apparatus for reducing shield noise in magnetoresistive sensors 审中-公开
标题翻译：降低磁阻传感器屏蔽噪声的方法和装置
公开(公告)号：US20070081277A1
公开(公告)日：2007-04-12
申请号：US11244712
申请日：2005-10-06
申请人： Liesl Folks , Guohan Hu , Yinshi Liu , Kenneth Mackay , Vladimir Nikitin , James Nix , Neil Smith
发明人： Liesl Folks , Guohan Hu , Yinshi Liu , Kenneth Mackay , Vladimir Nikitin , James Nix , Neil Smith
IPC分类号： G11B5/127 , G11B5/33
CPC分类号： G11B5/11 , B82Y25/00 , G01R33/093 , G11B5/3163 , G11B5/3912
摘要： Methods and apparatus provide a magnetic head that includes a magnetoresistive read sensor disposed between a first magnetic shield and a second magnetic shield. The second magnetic shield is configured to reduce effects on the read sensor due to unevenness in a topography of the read sensor.
摘要翻译：方法和装置提供一种磁头，其包括设置在第一磁屏蔽和第二磁屏蔽之间的磁阻读取传感器。第二磁屏蔽被配置为由于读取传感器的形状的不均匀性而减小对读取传感器的影响。

2. 发明授权

US07881020B2 Extraordinary magnetoresistive (EMR) device with novel lead structure 有权
标题翻译：具有新型引线结构的非凡磁阻（EMR）器件
公开(公告)号：US07881020B2
公开(公告)日：2011-02-01
申请号：US11747683
申请日：2007-05-11
申请人： Thomas Dudley Boone, Jr. , Liesl Folks , Bruce Alvin Gurney , Jordan Asher Katine , Ernesto E. Marinero , Neil Smith
发明人： Thomas Dudley Boone, Jr. , Liesl Folks , Bruce Alvin Gurney , Jordan Asher Katine , Ernesto E. Marinero , Neil Smith
IPC分类号： G11B5/39 , H01L29/82 , G01R33/02
CPC分类号： G01R33/093 , B82Y25/00 , G01R33/095 , G11B5/398 , G11B5/3993 , G11C11/14 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： An extraordinary magnetoresistive sensor (EMR sensor) having reduced size and increased resolution is described. The sensor includes a plurality of electrically conductive leads contacting a magnetically active layer and also includes an electrically conductive shunt structure. The electrically conductive leads of the sensor and the shunt structure can be formed in a common photolithographic masking and etching process so that they are self aligned with one another. This avoids the need to align multiple photolithographic processing steps, thereby allowing greatly increased resolution and reduced lead spacing. The EMR sensor can be formed with a magnetically active layer that can be close to or at the air bearing surface (ABS) for improved magnetic spacing with an adjacent magnetic medium of a data recording system.
摘要翻译：描述了具有减小的尺寸和增加的分辨率的非凡的磁阻传感器（EMR传感器）。传感器包括接触磁性有源层的多个导电引线，并且还包括导电分路结构。传感器和分路结构的导电引线可以以普通的光刻掩模和蚀刻工艺形成，使得它们彼此自对准。这避免了需要对准多个光刻处理步骤，从而允许大大提高分辨率和减小引线间距。 EMR传感器可以形成有可靠近或位于空气轴承表面（ABS）的磁性活性层，以改善与数据记录系统的相邻磁性介质的磁间距。

3. 发明申请

US20080278860A1 EXTRAORDINARY MAGNETORESISTIVE (EMR) DEVICE WITH NOVEL LEAD STRUCTURE 有权
标题翻译：具有新颖引线结构的特殊磁体（EMR）器件
公开(公告)号：US20080278860A1
公开(公告)日：2008-11-13
申请号：US11747683
申请日：2007-05-11
申请人： Thomas Dudley Boone, JR. , Liesl Folks , Bruce Alvin Gurney , Jordan Asher Katine , Ernesto E. Marinero , Neil Smith
发明人： Thomas Dudley Boone, JR. , Liesl Folks , Bruce Alvin Gurney , Jordan Asher Katine , Ernesto E. Marinero , Neil Smith
IPC分类号： G11B5/127
CPC分类号： G01R33/093 , B82Y25/00 , G01R33/095 , G11B5/398 , G11B5/3993 , G11C11/14 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： An extraordinary magnetoresistive sensor (EMR sensor) having reduced size and increased resolution is described. The sensor includes a plurality of electrically conductive leads contacting a magnetically active layer and also includes an electrically conductive shunt structure. The electrically conductive leads of the sensor and the shunt structure can be formed in a common photolithographic masking and etching process so that they are self aligned with one another. This avoids the need to align multiple photolithographic processing steps, thereby allowing greatly increased resolution and reduced lead spacing. The EMR sensor can be formed with a magnetically active layer that can be close to or at the air bearing surface (ABS) for improved magnetic spacing with an adjacent magnetic medium of a data recording system.
摘要翻译：描述了具有减小的尺寸和增加的分辨率的非凡的磁阻传感器（EMR传感器）。传感器包括接触磁性有源层的多个导电引线，并且还包括导电分路结构。传感器和分路结构的导电引线可以以普通的光刻掩模和蚀刻工艺形成，使得它们彼此自对准。这避免了需要对准多个光刻处理步骤，从而允许大大提高分辨率和减小引线间距。 EMR传感器可以形成有可靠近或位于空气轴承表面（ABS）的磁性活性层，以改善与数据记录系统的相邻磁性介质的磁间距。

4. 发明申请

US20110086440A1 METHOD FOR MANUFACTURING AN EXTRAORDINARY MAGNETORESISTIVE (EMR) DEVICE WITH NOVEL LEAD STRUCTURE 有权
标题翻译：制造具有新颖引线结构的特殊磁体（EMR）器件的方法
公开(公告)号：US20110086440A1
公开(公告)日：2011-04-14
申请号：US12972332
申请日：2010-12-17
申请人： Thomas Dudley Boone, JR. , Liesl Folks , Bruce Alvin Gurney , Jordan Asher Katine , Ernesto E. Marinero , Neil Smith
发明人： Thomas Dudley Boone, JR. , Liesl Folks , Bruce Alvin Gurney , Jordan Asher Katine , Ernesto E. Marinero , Neil Smith
IPC分类号： H01L21/02
CPC分类号： G01R33/093 , B82Y25/00 , G01R33/095 , G11B5/398 , G11B5/3993 , G11C11/14 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method for manufacturing an extraordinary magnetoresistive sensor (EMR sensor) having reduced size and increased resolution is described. The sensor includes a plurality of electrically conductive leads contacting a magnetically active layer and also includes an electrically conductive shunt structure. The electrically conductive leads of the sensor and the shunt structure can be formed in a common photolithographic masking and etching process so that they are self aligned with one another. This avoids the need to align multiple photolithographic processing steps, thereby allowing greatly increased resolution and reduced lead spacing. The EMR sensor can be formed with a magnetically active layer that can be close to or at the air bearing surface (ABS) for improved magnetic spacing with an adjacent magnetic medium of a data recording system.
摘要翻译：描述了具有减小的尺寸和增加的分辨率的非常大的磁阻传感器（EMR传感器）的制造方法。传感器包括接触磁性有源层的多个导电引线，并且还包括导电分路结构。传感器和分路结构的导电引线可以以普通的光刻掩模和蚀刻工艺形成，使得它们彼此自对准。这避免了需要对准多个光刻处理步骤，从而允许大大提高分辨率和减小引线间距。 EMR传感器可以形成有可靠近或位于空气轴承表面（ABS）的磁性活性层，以改善与数据记录系统的相邻磁性介质的磁间距。

5. 发明授权

US08166633B2 Method for manufacturing an extraordinary magnetoresistive (EMR) device with novel lead structure 有权
标题翻译：用于制造具有新型引线结构的非凡磁阻（EMR）器件的方法
公开(公告)号：US08166633B2
公开(公告)日：2012-05-01
申请号：US12972332
申请日：2010-12-17
申请人： Thomas Dudley Boone, Jr. , Liesl Folks , Bruce Alvin Gurney , Jordan Asher Katine , Ernesto E. Marinero , Neil Smith
发明人： Thomas Dudley Boone, Jr. , Liesl Folks , Bruce Alvin Gurney , Jordan Asher Katine , Ernesto E. Marinero , Neil Smith
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G01R33/093 , B82Y25/00 , G01R33/095 , G11B5/398 , G11B5/3993 , G11C11/14 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method for manufacturing an extraordinary magnetoresistive sensor (EMR sensor) having reduced size and increased resolution is described. The sensor includes a plurality of electrically conductive leads contacting a magnetically active layer and also includes an electrically conductive shunt structure. The electrically conductive leads of the sensor and the shunt structure can be formed in a common photolithographic masking and etching process so that they are self aligned with one another. This avoids the need to align multiple photolithographic processing steps, thereby allowing greatly increased resolution and reduced lead spacing. The EMR sensor can be formed with a magnetically active layer that can be close to or at the air bearing surface (ABS) for improved magnetic spacing with an adjacent magnetic medium of a data recording system.
摘要翻译：描述了具有减小的尺寸和增加的分辨率的非常大的磁阻传感器（EMR传感器）的制造方法。传感器包括接触磁性有源层的多个导电引线，并且还包括导电分路结构。传感器和分路结构的导电引线可以以普通的光刻掩模和蚀刻工艺形成，使得它们彼此自对准。这避免了需要对准多个光刻处理步骤，从而允许大大提高分辨率和减小引线间距。 EMR传感器可以形成有可靠近或位于空气轴承表面（ABS）的磁性活性层，以改善与数据记录系统的相邻磁性介质的磁间距。

6. 发明申请

US20050068671A1 Magnetic transducer for perpendicular magnetic recording with single pole write head with trailing shield 有权
标题翻译：用于垂直磁记录的磁性传感器，带有后挡板的单刀头
公开(公告)号：US20050068671A1
公开(公告)日：2005-03-31
申请号：US10675046
申请日：2003-09-29
申请人： Yimin Hsu , Quang Le , Hin Lee , James Nix , Aron Pentek , Kurt Rubin , Neil Smith , Nian Sun , Walter Weresin , Mason Williams
发明人： Yimin Hsu , Quang Le , Hin Lee , James Nix , Aron Pentek , Kurt Rubin , Neil Smith , Nian Sun , Walter Weresin , Mason Williams
IPC分类号： G11B5/187 , G11B5/31 , G11B5/60 , H05K1/02 , G11B5/127
CPC分类号： G11B5/3116 , G11B5/11 , G11B5/1278 , G11B5/3146 , G11B5/315 , G11B5/6005
摘要： The invention is a magnetic transducer with separated read and write heads for perpendicular recording. The write head has a trailing shield that extends from the return pole piece toward the main pole piece to form the write gap at the air-bearing surface. One embodiment of the trailing shield is a two part structure with a pedestal and a much smaller tip that confronts the main pole piece at the gap. In one embodiment a sink of non-magnetic, electrically conductive material is disposed in the separation gap between the read head and the flux bearing pole piece. The sink is preferably made of copper and does not extend to the ABS.
摘要翻译：本发明是具有分离的用于垂直记录的读写头的磁性换能器。写头具有从返回极片向主极片延伸的尾部屏蔽件，以在空气轴承表面形成写入间隙。后挡板的一个实施例是具有基座的两部分结构和在间隙处面对主极片的更小的尖端。在一个实施例中，非磁性导电材料的汇流槽设置在读头和磁通轴承极片之间的分隔间隙中。水槽优选由铜制成并且不延伸到ABS。

7. 发明申请

US20050040438A1 Current-in-plane magnetoresistive sensor with longitudinal biasing layer having a nonmagnetic oxide central region and method for fabrication of the sensor 失效
标题翻译：具有具有非磁性氧化物中心区域的纵向偏置层的电流平面内磁阻传感器和用于制造传感器的方法
公开(公告)号：US20050040438A1
公开(公告)日：2005-02-24
申请号：US10917982
申请日：2004-08-13
申请人： Elizabeth Dobisz , Robert Fontana , James Nix , Neil Smith
发明人： Elizabeth Dobisz , Robert Fontana , James Nix , Neil Smith
IPC分类号： G01R33/09 , G11B5/012 , G11B5/31 , G11B5/39 , H01L31/0232
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/012 , G11B5/3116 , G11B5/3903 , G11B5/3932 , G11B2005/3996 , Y10T29/49044
摘要： A current-in-the-plane (CIP) giant magnetoresistive (GMR) spin valve sensor has its free layer magnetization stabilized by longitudinal biasing through the use of free layer end-region antiferromagnetic exchange coupling. An antiparallel coupling (APC) layer, such as Ru, is formed on the free layer and a ferromagnetic bias layer is formed on the APC layer. The bias layer is a continuous layer that extends across the entire width of the free layer. The central region of the bias layer is formed of nonmagnetic oxides of one or more of the elements making up the bias layer, with the bias layer end regions remaining ferromagnetic. The oxidized central region of the bias layer defines the central active track-width region of the underlying free layer. The ferromagnetic end regions of the bias layer are antiferromagnetically coupled across the APC layer to the corresponding underlying free layer end regions to provide the longitudinal biasing.
摘要翻译：电流平面（CIP）巨磁阻（GMR）自旋阀传感器通过使用自由层末端反铁磁交换耦合的纵向偏置使其自由层磁化稳定。在自由层上形成诸如Ru的反平行耦合（APC）层，并且在APC层上形成铁磁偏置层。偏置层是在自由层的整个宽度上延伸的连续层。偏置层的中心区域由构成偏置层的一个或多个元件的非磁性氧化物形成，偏置层端部区域保持铁磁性。偏置层的氧化中心区域限定了下层自由层的中心主动轨迹宽度区域。偏置层的铁磁端区域跨越APC层反铁磁耦合到相应的下游自由层端部区域以提供纵向偏置。

8. 发明申请

US20190036433A1 Multi-Dimensional Layered Pulse Motor 审中-公开
公开(公告)号：US20190036433A1
公开(公告)日：2019-01-31
申请号：US16071912
申请日：2017-02-18
申请人： Neil Smith
发明人： Neil Smith
IPC分类号： H02K21/24 , H02K7/00 , H02K7/08 , H02P3/10 , H02P3/14 , B60L7/10 , B60K7/00
摘要： A pulse hub motor having coils (101) and magnets (107) interacting three dimensionally in x, y, and z axes to facilitate both increased power and efficiency through the ability to have more coils (101) in the motor, have each coil (101) perform both push and pull functions, and yet have the flexibility to only use the amount of coils (101) needed for real-time power requirements, whilst regenerating power in both normal drive and braking modes.

9. 发明申请

US20130148224A1 IMPLEMENTING SPIN-TORQUE OSCILLATOR SENSING WITH ENHANCED INTEGRATED DEMODULATOR FOR HARD DISK DRIVES 有权
标题翻译：用于硬盘驱动器的增强型集成式解调器实现旋转振动振荡器感应
公开(公告)号：US20130148224A1
公开(公告)日：2013-06-13
申请号：US13316419
申请日：2011-12-09
申请人： Patrick Mesquita Braganca , Richard Leo Galbraith , Bruce Alvin Gurney , Neil Smith , Bruce Wilson , Rehan Ahmed Zakai
发明人： Patrick Mesquita Braganca , Richard Leo Galbraith , Bruce Alvin Gurney , Neil Smith , Bruce Wilson , Rehan Ahmed Zakai
IPC分类号： G11B20/06
CPC分类号： H03D3/009 , G11B20/10018 , G11B20/10027 , G11B2220/2516
摘要： A method, apparatus, and system are provided for implementing spin-torque oscillator sensing with an enhanced integrated demodulator for hard disk drives. The demodulator receives an input signal from a STO read sensor having an oscillation frequency ω related to the strength of the detected magnetic signal field. The demodulator includes a pair of mixers coupled to a quadrature reference oscillator with respective quadrature components cos(ω0t), and sin(ω0t) of the quadrature reference oscillator being mixed with a received input signal to form signals at the sum and difference frequencies, ω±ω0. Each of these mixer products is lowpass filtered by a respective a lowpass filter to remove the sum frequency components for providing a demodulator output signal that is directly proportional the STO oscillation frequency ω. The demodulator output signal is used for processing by data detection electronics.
摘要翻译：提供了一种用于通过用于硬盘驱动器的增强型集成解调器来实现自旋扭矩振荡器感测的方法，装置和系统。解调器接收来自具有与所检测的磁信号场的强度相关的振荡频率ω的STO读取传感器的输入信号。解调器包括耦合到具有相应正交分量cos（ωωt）的正交参考振荡器的正交参考振荡器对，并且正交基准振荡器的sin（ω0t）与接收的输入信号混合以形成和频率和差频率ω ±omega0。这些混频器产品中的每一个由相应的低通滤波器进行低通滤波，以去除和频分量，以提供与STO振荡频率ω直接成比例的解调器输出信号。解调器输出信号用于数据检测电子设备的处理。

10. 发明授权

US08305715B2 Magnetoresistance (MR) read elements having an active shield 有权
标题翻译：磁阻（MR）读取元件具有主动屏蔽
公开(公告)号：US08305715B2
公开(公告)日：2012-11-06
申请号：US11965532
申请日：2007-12-27
申请人： Daniele Mauri , Neil Smith
发明人： Daniele Mauri , Neil Smith
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , G01R33/093 , G01R33/098 , G11B5/3912
摘要： Read elements and associated methods of fabrication are disclosed. A read element as described herein includes a magnetoresistance (MR) sensor sandwiched between first and second shields. The read element uses the first shield as an active portion of the MR sensor. Instead of implementing an AFM pinning layer in the MR sensor, the first shield takes the place of the AFM pinning layer. The first shield is orthogonally coupled to the pinned layer through an orthogonal coupling layer, such as a thin layer of AFM material. Through this structure, the magnetic moment of the first shield pins the magnetic moment of the pinned layer transverse to the ABS of the read element, and an AFM pinning layer is not needed.
摘要翻译：公开了读取元件和相关联的制造方法。如本文所述的读取元件包括夹在第一和第二屏蔽之间的磁阻（MR）传感器。读取元件使用第一屏蔽作为MR传感器的有效部分。代替在MR传感器中实现AFM钉扎层，第一个屏蔽取代了AFM钉扎层。第一屏蔽层通过正交耦合层（例如AFM材料的薄层）与被钉扎层正交耦合。通过这种结构，第一屏蔽的磁矩将钉扎层的磁矩横向于读取元件的ABS，并且不需要AFM钉扎层。

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