公开(公告)号：US20110007426A1

公开(公告)日：2011-01-13

申请号：US12502104

申请日：2009-07-13

申请人： Jiaoming Qiu ,  Kaizhong Gao ,  Yonghua Chen ,  Beverley Craig ,  Zhongyan Wang ,  Vladyslav A. Vas'ko

发明人： Jiaoming Qiu ,  Kaizhong Gao ,  Yonghua Chen ,  Beverley Craig ,  Zhongyan Wang ,  Vladyslav A. Vas'ko

IPC分类号： G11B5/33

CPC分类号： G11B5/127 ,  G11B5/39 ,  G11B5/3932

摘要： A magnetoresistive sensor having a trilayer sensor stack with two ferromagnetic freelayers separated by a nonmagnetic spacer layer is disclosed. The sensor is biased with a back biasing magnet adjacent a back of the trilayer sensor. The back biasing magnet, the trilayer sensor stack, or both have substantially trapezoidal shapes to enhance the biasing field and to minimize noise. In some embodiments, the trilayer sensor or back bias magnet have a shape designed to stabilize a micromagnetic “C” shape or concentrate magnetic flux in the trilayer sensor stack.

摘要翻译： 公开了具有由非磁性间隔层隔开的两个铁磁自由电感器的三层传感器堆叠的磁阻传感器。 传感器被偏置在靠近三层传感器背面的背偏置磁体。 背偏置磁体，三层传感器堆叠或两者具有基本上梯形的形状以增强偏置场并且使噪声最小化。 在一些实施例中，三层传感器或反偏置磁体具有设计成稳定微磁“C”形状或将三维层传感器堆叠中的磁通量集中的形状。

公开(公告)号：US08582250B2

公开(公告)日：2013-11-12

申请号：US12631183

申请日：2009-12-04

申请人： Jiaoming Qiu ,  Yonghua Chen ,  Kaizhong Gao

发明人： Jiaoming Qiu ,  Yonghua Chen ,  Kaizhong Gao

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： G11B5/3932 ,  B82Y25/00 ,  G01R33/0011 ,  G01R33/093

摘要： A trilayer magnetoresistive sensor has at least first and second ferromagnetic layers separated by a nonmagnetic layer. A high coercivity permanent magnet bias element biases the first ferromagnetic layer in a first direction. A high moment permanent magnet bias element biases the second ferromagnetic layer in a second direction substantially orthogonal to the first direction.

摘要翻译： 三层磁阻传感器至少具有由非磁性层分离的第一和第二铁磁层。 高矫顽力永磁体偏置元件沿第一方向偏置第一铁磁层。 高瞬间永磁偏置元件在与第一方向大致正交的第二方向上偏置第二铁磁层。

公开(公告)号：US20100328823A1

公开(公告)日：2010-12-30

申请号：US12491838

申请日：2009-06-25

申请人： Yonghua Chen ,  Jiaoming Qiu ,  Xilin Peng ,  Kaizhong Gao

发明人： Yonghua Chen ,  Jiaoming Qiu ,  Xilin Peng ,  Kaizhong Gao

IPC分类号： G11B5/127

CPC分类号： G01R33/098 ,  G11B5/3912 ,  G11B5/3916 ,  G11B5/398 ,  H01L43/08

摘要： A magnetic reader comprises first and second shields oriented transversely to a media-facing surface, a magnetoresistive stack located between the first and second shields, and a flux guide. The magnetoresistive stack extends from a proximal end oriented toward the media-facing surface to a distal end oriented away from the media-facing surface. The flux guide extends from the first shield toward the second shield, and is spaced from the magnetoresistive stack at the distal end. The flux guide magnetically couples the distal end of the magnetoresistive stack to the first shield.

摘要翻译： 磁读取器包括横向于介质表面的第一和第二屏蔽层，位于第一和第二屏蔽之间的磁阻堆叠以及磁通引导件。 磁阻堆叠从朝向面向介质的表面的近端延伸到远离面向介质的表面的远端。 磁通引导件从第一屏蔽件延伸到第二屏蔽件，并且在远端处与磁阻堆叠件间隔开。 磁通引导件将磁阻堆叠的远端磁耦合到第一屏蔽层。

公开(公告)号：US08582251B2

公开(公告)日：2013-11-12

申请号：US12727670

申请日：2010-03-19

申请人： Kaizhong Gao ,  Lei Wang ,  Jiaoming Qiu ,  Yonghua Chen

发明人： Kaizhong Gao ,  Lei Wang ,  Jiaoming Qiu ,  Yonghua Chen

IPC分类号： G11B5/39

CPC分类号： G11B5/398 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3932

摘要： Various embodiments generally relate to a magnetic sensor, and more specifically to a magnetoresistive read head sensor. In one such exemplary embodiment, a magnetic sensor comprises a sensor stack and magnetic bias elements positioned adjacent opposite sides of the sensor stack. At least one of the bias elements has a non-rectangular shape, such as substantially trapezoidal or parallelogram shapes having non-perpendicular corners.

摘要翻译： 各种实施例通常涉及磁传感器，更具体地涉及磁阻读头传感器。 在一个这样的示例性实施例中，磁传感器包括传感器堆叠和邻近传感器堆叠的相对侧定位的磁偏置元件。 至少一个偏置元件具有非矩形形状，例如具有非垂直角的大致梯形或平行四边形。

公开(公告)号：US08238062B2

公开(公告)日：2012-08-07

申请号：US12491838

申请日：2009-06-25

申请人： Yonghua Chen ,  Jiaoming Qiu ,  Xilin Peng ,  Kaizhong Gao

发明人： Yonghua Chen ,  Jiaoming Qiu ,  Xilin Peng ,  Kaizhong Gao

IPC分类号： G11B5/39

CPC分类号： G01R33/098 ,  G11B5/3912 ,  G11B5/3916 ,  G11B5/398 ,  H01L43/08

摘要： In some embodiments, a magnetic reader comprises first and second shields extending from an air bearing surface (ABS), a magnetoresistive stack is located between the first and second shields, and a flux guide is separated from the magnetoresistive stack while connecting the first and second shields. The flux guide magnetically couples the distal end of the magnetoresistive stack to the first shield.

摘要翻译： 在一些实施例中，磁读取器包括从空气轴承表面（ABS）延伸的第一和第二屏蔽，磁阻堆叠位于第一和第二屏蔽之间，并且磁通引导件与磁阻堆叠分离，同时连接第一和第二屏蔽 盾牌 磁通引导件将磁阻堆叠的远端磁耦合到第一屏蔽层。

公开(公告)号：US20110051294A1

公开(公告)日：2011-03-03

申请号：US12727670

申请日：2010-03-19

申请人： Kaizhong Gao ,  Lei Wang ,  Jiaoming Qiu ,  Yonghua Chen

发明人： Kaizhong Gao ,  Lei Wang ,  Jiaoming Qiu ,  Yonghua Chen

IPC分类号： G11B5/127 ,  G11B5/10

CPC分类号： G11B5/398 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3932

摘要： A magnetic sensor or magnetoresistive read head comprises a sensor stack and magnetic bias elements positioned adjacent each side of the sensor stack. The sensor stack and bias elements have non-rectangular shapes, such as substantially trapezoidal or parallelogram shapes having non-perpendicular corners. In some embodiments, the sensor stack and bias elements have a shape that stabilizes a “C” state or “S” state magnetization pattern.

摘要翻译： 磁传感器或磁阻读头包括传感器堆叠和邻近传感器堆叠的每一侧定位的磁偏置元件。 传感器堆叠和偏置元件具有非矩形形状，例如具有非垂直角的大致梯形或平行四边形。 在一些实施例中，传感器堆叠和偏置元件具有稳定“C”状态或“S”状态磁化模式的形状。

公开(公告)号：US20110050211A1

公开(公告)日：2011-03-03

申请号：US12547832

申请日：2009-08-26

申请人： Kaizhong Gao ,  Jiaoming Qiu ,  Lei Wang ,  Yonghua Chen

发明人： Kaizhong Gao ,  Jiaoming Qiu ,  Lei Wang ,  Yonghua Chen

IPC分类号： G01R33/09 ,  G11B5/127

CPC分类号： G11B5/3932 ,  B82Y25/00 ,  G01R33/093

摘要： A magnetic sensor comprises a sensor stack and magnetic bias elements positioned adjacent each side of the sensor stack. The sensor stack and bias elements have substantially trapezoidal shapes.

摘要翻译： 磁传感器包括传感器堆叠和邻近传感器堆叠的每一侧定位的磁偏置元件。 传感器堆叠和偏置元件具有基本上梯形的形状。

公开(公告)号：US20110134572A1

公开(公告)日：2011-06-09

申请号：US12631183

申请日：2009-12-04

申请人： Jiaoming Qiu ,  Yonghua Chen ,  Kaizhong Gao

发明人： Jiaoming Qiu ,  Yonghua Chen ,  Kaizhong Gao

IPC分类号： G11B5/33

CPC分类号： G11B5/3932 ,  B82Y25/00 ,  G01R33/0011 ,  G01R33/093

摘要： A trilayer magnetoresistive sensor includes first and second ferromagnetic layers separated by a nonmagnetic layer. A high coercivity permanent magnet bias element biases the first ferromagnetic layer in a first direction. A high moment permanent magnet bias element biases the second ferromagnetic layer in a second direction substantially orthogonal to the first direction.

摘要翻译： 三层磁阻传感器包括由非磁性层分隔开的第一和第二铁磁层。 高矫顽力永磁体偏置元件沿第一方向偏置第一铁磁层。 高瞬间永磁偏置元件在与第一方向大致正交的第二方向上偏置第二铁磁层。

公开(公告)号：US08896972B2

公开(公告)日：2014-11-25

申请号：US12702045

申请日：2010-02-08

申请人： Kaizhong Gao ,  Xilin Peng ,  Zhongyan Wang ,  Yonghua Chen

发明人： Kaizhong Gao ,  Xilin Peng ,  Zhongyan Wang ,  Yonghua Chen

IPC分类号： G11B5/33 ,  G11B5/127 ,  G11B5/39 ,  H01L43/08

CPC分类号： G11B5/398 ,  G11B5/3912 ,  H01L43/08

摘要： In some examples, a system comprising a data storage member including a magnetic storage medium, the magnetic storage medium having a plurality of magnetic bit domains aligned on at least one data track, where a transition boundary between respective magnetic bit domains defines a transition curvature. The system may further comprise a magnetic read head including a first shield layer, a second shield layer, and a read sensor stack provided proximate to the first and second shield layers, where the magnetic read head senses a magnetic field of each of the plurality of magnetic bit domains according to a read playback sensitivity function. In some examples, the shield layers and read sensor stack may be configured to provide a reader playback sensitivity function that substantially corresponds to the shape of the respective magnetic bit domains.

摘要翻译： 在一些示例中，包括包括磁存储介质的数据存储构件的系统，所述磁存储介质具有在至少一个数据轨道上对准的多个磁位域，其中各个磁位域之间的过渡边界限定了转变曲率。 该系统还可以包括磁读取头，其包括靠近第一和第二屏蔽层设置的第一屏蔽层，第二屏蔽层和读取传感器堆叠，其中磁性读取头感测多个 根据读取播放灵敏度功能的磁性位域。 在一些示例中，屏蔽层和读取传感器堆叠可以被配置为提供基本对应于各个磁性位域的形状的读取器重放灵敏度功能。

公开(公告)号：US20110194213A1

公开(公告)日：2011-08-11

申请号：US12702045

申请日：2010-02-08

申请人： Kaizhong Gao ,  Xilin Peng ,  Zhongyan Wang ,  Yonghua Chen

发明人： Kaizhong Gao ,  Xilin Peng ,  Zhongyan Wang ,  Yonghua Chen

IPC分类号： G11B5/33

CPC分类号： G11B5/398 ,  G11B5/3912 ,  H01L43/08

摘要： In some examples, a system comprising a data storage member including a magnetic storage medium, the magnetic storage medium having a plurality of magnetic bit domains aligned on at least one data track, where a transition boundary between respective magnetic bit domains defines a transition curvature. The system may further comprise a magnetic read head including a first shield layer, a second shield layer, and a read sensor stack provided proximate to the first and second shield layers, where the magnetic read head senses a magnetic field of each of the plurality of magnetic bit domains according to a read playback sensitivity function. In some examples, the shield layers and read sensor stack may be configured to provide a reader playback sensitivity function that substantially corresponds to the shape of the respective magnetic bit domains.

摘要翻译： 在一些示例中，包括包括磁存储介质的数据存储构件的系统，所述磁存储介质具有在至少一个数据轨道上对准的多个磁位域，其中各个磁位域之间的过渡边界限定了转变曲率。 该系统还可以包括磁读取头，其包括靠近第一和第二屏蔽层设置的第一屏蔽层，第二屏蔽层和读取传感器堆叠，其中磁性读取头感测多个 根据读取播放灵敏度功能的磁性位域。 在一些示例中，屏蔽层和读取传感器堆叠可以被配置为提供基本对应于各个磁性位域的形状的读取器重放灵敏度功能。