公开(公告)号：US06738236B1

公开(公告)日：2004-05-18

申请号：US09306484

申请日：1999-05-06

申请人： Sining Mao ,  Anthony M. Mack ,  Brenda A. Everitt ,  Edward S. Murdock ,  Zheng Gao

发明人： Sining Mao ,  Anthony M. Mack ,  Brenda A. Everitt ,  Edward S. Murdock ,  Zheng Gao

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10S977/934 ,  Y10T29/49046

摘要： Disclosed are a spin valve magnetoresistive sensor and methods of fabricating the same. The sensor includes a free layer, a synthetic antiferromagnetic. (SAF) layer, a spacer layer positioned between the free layer and the SAF layer, and a Mn-based antiferromagnetic pinning layer in contact with the SAF layer. The SAF layer includes first and second ferromagnetic CoFe layers and an Ru spacer layer positioned between and directly in contact with the first and second CoFe ferromagnetic layers.

摘要翻译： 公开了一种自旋阀磁阻传感器及其制造方法。 传感器包括自由层，合成反铁磁体。 （SAF）层，位于自由层和SAF层之间的间隔层，以及与SAF层接触的Mn基反铁磁钉扎层。 SAF层包括位于第一和第二CoFe铁磁层之间并直接与第一和第二CoFe铁磁层接触的第一和第二铁磁CoFe层和Ru间隔层。

公开(公告)号：US06490140B1

公开(公告)日：2002-12-03

申请号：US09528346

申请日：2000-03-17

申请人： Sining Mao ,  Zheng Gao ,  Eric W. Singleton

发明人： Sining Mao ,  Zheng Gao ,  Eric W. Singleton

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B5/3932 ,  G11B2005/3996 ,  H01F10/3268 ,  H01F10/3295

摘要： A giant magnetoresistive stack for use in a magnetic read head includes a NiFeCr seed layer, a ferromagnetic free layer, at least one nonmagnetic spacer layer, at least one ferromagnetic pinned layer, and at least one PtMnX pinning layer, where X is selected from the group consisting of Cr, Pd, Nb, Re, Rh, Ta, Ru, Os, Zr, Hf, Ni, Co, and Fe. The ferromagnetic free layer has a rotatable magnetic moment. The ferromagnetic pinned layer has a fixed magnetic moment and is positioned adjacent to the PtMnX pinning layer. The nonmagnetic spacer layer is positioned between the free layer and the pinned layer. The NiFeCr seed layer is positioned adjacent to either the free layer or the pinning layer.

摘要翻译： 用于磁读头的巨磁阻堆包括NiFeCr种子层，铁磁自由层，至少一个非磁性间隔层，至少一个铁磁性钉扎层和至少一个PtMnX钉扎层，其中X选自 由Cr，Pd，Nb，Re，Rh，Ta，Ru，Os，Zr，Hf，Ni，Co和Fe组成的组。 铁磁自由层具有可旋转的磁矩。 铁磁钉扎层具有固定的磁矩并且位于PtMnX钉扎层附近。 非磁性间隔层位于自由层和钉扎层之间。 NiFeCr种子层位于自由层或钉扎层附近。

公开(公告)号：US06469878B1

公开(公告)日：2002-10-22

申请号：US09500778

申请日：2000-02-08

申请人： Anthony M. Mack ,  Zheng Gao ,  Nurul Amin ,  Sining Mao ,  Richard Michel

发明人： Anthony M. Mack ,  Zheng Gao ,  Nurul Amin ,  Sining Mao ,  Richard Michel

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  G01R33/093 ,  G11B5/3113 ,  G11B5/3163 ,  G11B5/3903 ,  H01F10/3272 ,  H01F10/3295 ,  H01F41/304 ,  Y10T29/49034

摘要： Methods of fabricating spin valve sensors in accordance with the invention include forming a pinning layer from an antiferromagnetic material and forming a synthetic antiferromagnet adjacent the pinning layer. A free ferromagnetic layer is formed, and exchange tabs are formed adjacent outer portions of the free ferromagnetic layer for biasing the free layer. The exchange tabs are formed from the same antiferromagnetic material as the first pinning layer. Then, the magnetic moments of the synthetic antiferromagnet are set, and the magnetic moment of the free ferromagnetic layer is biased, during a single anneal in the presence of a single magnetic field.

公开(公告)号：US06680829B2

公开(公告)日：2004-01-20

申请号：US09934096

申请日：2001-08-20

申请人： Lujun Chen ,  James Giusti ,  Juan Jose Fernandez-de-Castro ,  Jian Chen ,  Sining Mao

发明人： Lujun Chen ,  James Giusti ,  Juan Jose Fernandez-de-Castro ,  Jian Chen ,  Sining Mao

IPC分类号： G11B5127

CPC分类号： G11B5/3938 ,  G11B5/00 ,  G11B5/3903 ,  G11B5/398

摘要： A magnetoresistive (MR) sensor for use in a magnetic storage system including a magnetic storage media having multiple concentric microtracks with information stored thereon. The MR sensor includes a plurality of generally parallel layers that form an MR stack. The MR sensor also includes a top shield and a bottom shield that are spaced apart on opposite sides of the MR stack in a longitudinal direction. The Mr sensor further includes a first and a second side shield spaced apart on opposite sides of the MR stack in a transverse direction. The top shield, bottom shield, first side shield and second side shield substantially surround the MR stack.

摘要翻译： 一种用于磁存储系统的磁阻（MR）传感器，包括具有存储在其上的信息的具有多个同心微轨迹的磁存储介质。 MR传感器包括形成MR堆叠的多个大致平行的层。 MR传感器还包括在MR堆叠的纵向方向上的相对侧上间隔开的顶部屏蔽和底部屏蔽。 Mr传感器还包括在横向上在MR堆叠的相对侧上间隔开的第一和第二侧屏蔽。 顶部屏蔽，底部屏蔽，第一侧面屏蔽和第二侧面屏蔽件基本上围绕MR堆叠。

公开(公告)号：US07057865B1

公开(公告)日：2006-06-06

申请号：US09925850

申请日：2001-08-09

申请人： Sining Mao ,  Janusz J. Nowak ,  Eric S. Linville ,  Jian Chen

发明人： Sining Mao ,  Janusz J. Nowak ,  Eric S. Linville ,  Jian Chen

IPC分类号： G11B5/39

CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3903 ,  H01F10/3272 ,  H01L43/08

摘要： A magnetic sensor including a tunneling magnetoresistive stack with a synthetic antiferromagnet (SAF) free layer.

摘要翻译： 包括具有合成反铁磁（SAF）自由层的隧道磁阻堆叠的磁传感器。

公开(公告)号：US08514506B1

公开(公告)日：2013-08-20

申请号：US13371252

申请日：2012-02-10

申请人： Shaoping Li ,  Yimin Guo ,  Francis H. Liu ,  Sining Mao

发明人： Shaoping Li ,  Yimin Guo ,  Francis H. Liu ,  Sining Mao

IPC分类号： G11B5/09 ,  G11B20/10

CPC分类号： G11B5/3954 ,  G11B5/012 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10074 ,  G11B20/10175 ,  G11B20/10222 ,  G11B20/10231 ,  G11B20/10277 ,  G11B20/10305 ,  G11B20/10314 ,  G11B20/10379 ,  G11B20/1258 ,  G11B2220/2516

摘要： A disk drive is disclosed comprising a disk having a plurality of data tracks, and a head actuated over the disk, the head comprising a first read element and a second read element. A data track is read to generate a first read signal emanating from the first read element and a second read signal emanating from the second read element. The first read signal is delayed in continuous time relative to the second read signal to generate a delayed read signal, and the second read signal is combined with the delayed read signal to generate a combined read signal. An estimated data sequence is detected from the combined read signal.

摘要翻译： 公开了一种磁盘驱动器，其包括具有多个数据磁道的磁盘，以及在盘上驱动的磁头，磁头包括第一读取元件和第二读取元件。 读取数据磁道以产生从第一读取元件发出的第一读取信号和从第二读取元件发出的第二读取信号。 第一读取信号相对于第二读取信号以连续时间延迟，以产生延迟的读取信号，并且将第二读取信号与延迟的读取信号组合以产生组合的读取信号。 从组合的读取信号中检测估计的数据序列。

公开(公告)号：US08339736B2

公开(公告)日：2012-12-25

申请号：US11820703

申请日：2007-06-20

申请人： Kaizhong Gao ,  Sining Mao ,  Eric S. Linville ,  Xuebing Feng ,  Shaoping Li ,  Steven Paul Bozeman

发明人： Kaizhong Gao ,  Sining Mao ,  Eric S. Linville ,  Xuebing Feng ,  Shaoping Li ,  Steven Paul Bozeman

IPC分类号： G11B5/17

CPC分类号： G11B5/1278 ,  G11B5/02 ,  G11B5/3123 ,  G11B5/3133 ,  G11B2005/0002

摘要： A magnetic device includes a write element having a write element tip and a conductive coil that carries current to induce a first field in the write element. A first conductor is proximate a leading edge of the write pole tip for carrying current to generate a second field that augments the first field.

摘要翻译： 磁性装置包括具有写入元件尖端的写元件和承载电流以在写入元件中引起第一场的导电线圈。 第一导体靠近写极尖的前缘，用于承载电流以产生增大第一场的第二场。

公开(公告)号：US08298611B2

公开(公告)日：2012-10-30

申请号：US12178443

申请日：2008-07-23

申请人： Nurul Amin ,  Sining Mao

发明人： Nurul Amin ,  Sining Mao

IPC分类号： G11B5/00

CPC分类号： G11B5/84 ,  B26D3/16 ,  B82Y10/00 ,  G11B5/64 ,  G11B5/66 ,  G11B5/743 ,  G11B5/82 ,  G11B5/851 ,  G11B5/865 ,  Y10T83/04

摘要： A method of fabricating a discrete track magnetic recording media. A base layer is provided onto which repeating and alternating magnetic layer and non-magnetic layers are deposited. The thickness of the magnetic layer corresponds to the width of the track of the recording media. A cylindrical rod can be used as the base layer, such that the alternating magnetic and non-magnetic layers spiraling or concentric layers around the rod. The resulting media layer can be cut or sliced into individual magnetic media or used to imprint other media discs with the discrete pattern of the media layer.

摘要翻译： 一种制造离散轨道磁记录介质的方法。 提供基层，沉积重复和交替的磁性层和非磁性层。 磁性层的厚度对应于记录介质的轨道的宽度。 可以使用圆柱形棒作为基层，使得交替的磁性和非磁性层围绕杆螺旋或同心层。 所得到的介质层可以被切割或切成单独的磁性介质，或用于用介质层的离散图案印刷其它介质盘。

公开(公告)号：US07064934B2

公开(公告)日：2006-06-20

申请号：US10459820

申请日：2003-06-12

申请人： Sining Mao ,  William P. Vavra ,  Eric S. Linville

发明人： Sining Mao ,  William P. Vavra ,  Eric S. Linville

IPC分类号： G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3116 ,  G11B5/3133 ,  G11B5/3903 ,  G11B5/40 ,  G11B2005/0016

摘要： A magnetoresistive (MR) sensor having reduced operating temperature is disclosed. The MR sensor, which includes an MR stack having a magnetoresistive layer, is configured to operate in a current-perpendicular-to-plane (CPP) mode wherein a sense current flows substantially perpendicular to a longitudinal plane of the magnetoresistive layer. The MR sensor further includes a thermal sink layer positioned with respect to the MR stack to reduce an operating temperature of the magnetoresistive sensor. The thermal sink layer is made of a material having high thermal conductivity, and is preferably separated from the MR stack by a metallic cap or seed layer.

摘要翻译： 公开了具有降低的工作温度的磁阻（MR）传感器。 包括具有磁阻层的MR堆叠的MR传感器被配置为以电流垂直于平面（CPP）模式工作，其中感测电流基本上垂直于磁阻层的纵向平面流动。 MR传感器还包括相对于MR堆叠定位的散热层，以降低磁阻传感器的工作温度。 散热层由具有高导热性的材料制成，并且优选地通过金属盖或种子层与MR堆叠分离。

公开(公告)号：US20050105219A1

公开(公告)日：2005-05-19

申请号：US10715695

申请日：2003-11-18

申请人： Sining Mao ,  Eric Linville ,  Nurul Amin ,  Johannes Van Ek ,  Olle Heinonen

发明人： Sining Mao ,  Eric Linville ,  Nurul Amin ,  Johannes Van Ek ,  Olle Heinonen

IPC分类号： G11B5/00 ,  G11B5/127 ,  G11B5/33 ,  G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3948 ,  G11B2005/0008 ,  G11B2005/0029 ,  G11B2005/3996

摘要： A differential read head comprises one tri-layer reader or a plurality of tri-layer readers operating in a current perpendicular to plane (CPP) mode. The tri-layer readers each comprise a first free layer, a second free layer, and a nonmagnetic layer positioned therebetween. A nonmagnetic spacer means is positioned between the plurality of tri-layer readers for electrically connecting the plurality of tri-layer readers in series such that a single CPP sense current representing a differential signal flows serially through the read head. With a single tri-layer reader, the free layers are spaced by a width substantially similar to the transition width of the magnetic medium.

摘要翻译： 差分读取头包括在垂直于平面（CPP）模式的电流中操作的一个三层读取器或多个三层读取器。 三层读取器各自包括位于其间的第一自由层，第二自由层和非磁性层。 非磁性间隔装置位于多个三层读取器之间，用于串联电连接多个三层读取器，使得表示差分信号的单个CPP感测电流串行流过读取头。 使用单个三层读取器，自由层间隔开与磁介质的过渡宽度基本相似的宽度。