公开(公告)号：US08786983B1

公开(公告)日：2014-07-22

申请号：US13532658

申请日：2012-06-25

申请人： Feng Liu ,  Zhanjie Li ,  Zhigang Bai ,  Ut Tran ,  Kevin K. Lin

发明人： Feng Liu ,  Zhanjie Li ,  Zhigang Bai ,  Ut Tran ,  Kevin K. Lin

IPC分类号： G11B5/17

CPC分类号： G11B5/17 ,  G11B5/3123

摘要： A method and system provide a magnetic transducer having an air-bearing surface (ABS). The magnetic transducer includes a write pole and at least one coil. The write pole has a pole tip and a yoke. The coil(s) energize the write pole. The coil(s) include a plurality of turns a first distance from the pole and at least one additional turn a second distance from the pole. The first distance is different from the second distance. The at least one additional turn extends over at least part of two of the plurality of turns, has a length in a stripe height direction perpendicular to the ABS and has a height in a down track direction. The length is greater than the height.

摘要翻译： 一种方法和系统提供具有空气轴承表面（ABS）的磁换能器。 磁换能器包括写极和至少一个线圈。 写极具有极尖和轭。 线圈使写入极点通电。 所述线圈包括与所述极点第一距离的多个匝和距离所述极点至少一个第二距离的至少一个附加匝。 第一距离与第二距离不同。 所述至少一个附加转弯在所述多个匝中的两个匝中的至少一部分上延伸，具有垂直于所述ABS的条带高度方向上的长度，并且具有向下轨道方向的高度。 长度大于高度。

公开(公告)号：US09053715B1

公开(公告)日：2015-06-09

申请号：US13075070

申请日：2011-03-29

申请人： Lisha Wang ,  Tao Pan ,  Sining Mao ,  Zhigang Bai ,  Feng Liu ,  Zhanjie Li

发明人： Lisha Wang ,  Tao Pan ,  Sining Mao ,  Zhigang Bai ,  Feng Liu ,  Zhanjie Li

IPC分类号： G11B5/147 ,  G11B5/31

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  Y10T29/49044

摘要： A method and system for providing a magnetic recording head is described. The magnetic recording head has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The magnetic recording head includes a main pole, at least one auxiliary pole, a nonmagnetic spacer, and at least one coil. The main pole includes a first main pole piece and a second main pole piece. The first main pole piece includes a pole tip occupying a portion of the ABS and a back edge distal from the ABS. The second main pole piece has a front surface. The auxiliary pole(s) have a front recessed from the ABS and are magnetically coupled with the main pole. The nonmagnetic spacer is between the back edge of the first main pole piece and the front surface of the second main pole piece. The coil(s) are for energizing the main pole.

摘要翻译： 描述了一种用于提供磁记录头的方法和系统。 磁记录头具有在使用期间被配置为驻留在介质附近的空气轴承表面（ABS）。 磁记录头包括主极，至少一个辅助极，非磁性间隔物和至少一个线圈。 主极包括第一主极片和第二主极片。 第一主极件包括占据ABS的一部分的极尖和远离ABS的后边缘。 第二主极片具有前表面。 辅助极具有从ABS凹入的前部并与主极磁耦合。 非磁性间隔物位于第一主极片的后边缘和第二主极片的前表面之间。 线圈用于激励主极。

公开(公告)号：US08405930B1

公开(公告)日：2013-03-26

申请号：US13070279

申请日：2011-03-23

申请人： Zhanjie Li ,  Zhigang Bai ,  Feng Liu ,  Yugang Wang

发明人： Zhanjie Li ,  Zhigang Bai ,  Feng Liu ,  Yugang Wang

IPC分类号： G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  Y10T29/49044

摘要： A method and system for providing a magnetic recording head is described. The magnetic recording head has an ABS configured to reside in proximity to a media during use. The magnetic recording head includes a main pole, first and second auxiliary poles, a backgap, a nonmagnetic spacer, and at least one coil. The main pole includes a pole tip occupying a portion of the ABS and a back edge distal from the ABS. Each auxiliary pole has a front recessed from the ABS and a back portion. A portion of the main pole distal from the ABS resides between the auxiliary poles. The auxiliary poles are magnetically coupled with the main pole. The backgap magnetically couples the back portions of the auxiliary poles. The nonmagnetic spacer adjoins the back edge of the main pole and is between the auxiliary poles. The coil(s) energize the main pole.

摘要翻译： 描述了一种用于提供磁记录头的方法和系统。 磁记录头具有被配置为在使用期间驻留在介质附近的ABS。 磁记录头包括主极，第一和第二辅助极，后隙，非磁性间隔物和至少一个线圈。 主杆包括占据ABS的一部分的极尖和远离ABS的后边缘。 每个辅助杆具有从ABS的前凹部和后部。 远离ABS的主极的一部分位于辅助极之间。 辅助极与主极磁耦合。 后隙磁耦合辅助杆的后部。 非磁性隔离物邻接主极的后边缘并在辅助极之间。 线圈给主极通电。

公开(公告)号：US08837081B1

公开(公告)日：2014-09-16

申请号：US13312107

申请日：2011-12-06

申请人： Chengtao R. Yu ,  Dehua Han ,  Ying Hong ,  Feng Liu ,  Laurence L. Chen ,  Zhanjie Li ,  Zhigang Bai ,  Yu Lo ,  Yunfei Ding

发明人： Chengtao R. Yu ,  Dehua Han ,  Ying Hong ,  Feng Liu ,  Laurence L. Chen ,  Zhanjie Li ,  Zhigang Bai ,  Yu Lo ,  Yunfei Ding

IPC分类号： G11B5/127

CPC分类号： G11B5/6076

摘要： A method and system provide a touchdown sensor for use in disk drive. The touchdown sensor includes a sensor layer including a plurality of magnetic layers interleaved with at least one nonmagnetic layer. The plurality of magnetic layers are magnetically coupled and single domain. Further, the sensor has a temperature coefficient of resistivity (TCR) of at least 0.15%/° C.

摘要翻译： 一种方法和系统提供用于磁盘驱动器的触地传感器。 触地传感器包括传感器层，传感器层包括与至少一个非磁性层交错的多个磁性层。 多个磁性层是磁耦合的和单一的结构域。 此外，传感器的电阻率（TCR）的温度系数至少为0.15％/℃。

公开(公告)号：US08547659B1

公开(公告)日：2013-10-01

申请号：US13103872

申请日：2011-05-09

申请人： Zhigang Bai ,  Zhanjie Li ,  Sharat Batra

发明人： Zhigang Bai ,  Zhanjie Li ,  Sharat Batra

IPC分类号： G11B5/127 ,  G11B5/17

CPC分类号： G11B5/3116 ,  G11B5/17 ,  G11B5/3123

摘要： A method and system for providing a magnetic recording head is described. The magnetic recording head has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The head includes a first coil, a second coil, a main pole, and a third coil. The first coil has a first plurality of turns and is configured to carry a first write current in a first direction. The second coil has a second plurality of turns and is configured to carry a second write current in a second direction. The main pole is between the first coil and the second coil. The third coil has a third plurality of turns configured to carry a third write current in a third direction.

摘要翻译： 描述了一种用于提供磁记录头的方法和系统。 磁记录头具有在使用期间被配置为驻留在介质附近的空气轴承表面（ABS）。 头包括第一线圈，第二线圈，主极和第三线圈。 第一线圈具有第一多个匝并且被配置为沿第一方向承载第一写入电流。 第二线圈具有第二多个匝，并被配置为在第二方向上承载第二写入电流。 主极在第一线圈和第二线圈之间。 第三线圈具有构造为在第三方向上承载第三写入电流的第三多个匝。

公开(公告)号：US20160300999A1

公开(公告)日：2016-10-13

申请号：US14680073

申请日：2015-04-07

申请人： Ge Yi ,  Zhanjie Li

发明人： Ge Yi ,  Zhanjie Li

IPC分类号： H01L43/02 ,  H01L43/08 ,  G11C11/16

CPC分类号： H01L43/08 ,  G11C11/161 ,  G11C11/1673 ,  G11C11/1675 ,  G11C11/18 ,  H01L43/10

摘要： A novel three-terminal MRAM memory cell with an independent sensing and writing paths, a composite data storage layer together with a bias magnetic field for the data storage layer has been invented. The interaction between the magnetic layers within the composite data storage layer is either via Ruderman-Kittel-Kasuya-Yosida (RKKY) coupling, or magnetostatic coupling, or orange peel coupling, or even a direct ferromagnetic coupling. The design improves magnetic and thermal stability of the cell, thus capable for higher area density.

摘要翻译： 已经发明了具有独立的感测和写入路径的新型三端MRAM存储器单元，复合数据存储层以及用于数据存储层的偏置磁场。 复合数据存储层内的磁层之间的相互作用可以通过Ruderman-Kittel-Kasuya-Yosida（RKKY）耦合或静磁耦合，或橙皮耦合，甚至直接铁磁耦合。 该设计提高了电池的磁性和热稳定性，因此能够实现更高的面积密度。

公开(公告)号：US07486552B2

公开(公告)日：2009-02-03

申请号：US11763800

申请日：2007-06-15

申请人： Dmytro Apalkov ,  Zhanjie Li

发明人： Dmytro Apalkov ,  Zhanjie Li

IPC分类号： G11C11/15

CPC分类号： G11C11/1675 ,  G11C11/161

摘要： A method and system for providing a magnetic element is described. The magnetic element includes a first pinned layer, a first spacer layer, a free layer, a second spacer layer, and a second pinned layer. The first and second pinned layers have first and magnetizations oriented in first and second directions, respectively. The first and second spacer layers are nonferromagnetic. The first and second spacer layers are between the free layer and the first and second pinned layers, respectively. The magnetic element is configured either to allow the free layer to be switched to each of multiple states when both a unidirectional write current is passed through the magnetic element and the magnetic element is subjected to a magnetic field corresponding to the each states or to allow the free layer to be switched to each of the plurality of states utilizing a write current and an additional magnetic field that is applied from at least one of the first pinned layer and the second pinned layer substantially only if the write current is also applied.

摘要翻译： 描述了一种用于提供磁性元件的方法和系统。 磁性元件包括第一固定层，第一间隔层，自由层，第二间隔层和第二固定层。 第一和第二固定层分别具有在第一和第二方向上取向的第一和第二磁化。 第一和第二间隔层是非铁磁性的。 第一和第二间隔层分别位于自由层和第一和第二钉扎层之间。 磁元件被配置为允许当单向写入电流通过磁性元件并且磁性元件经受对应于每个状态的磁场时，自由层被切换到多个状态中的每一个状态，或者允许 利用写入电流和从第一被钉扎层和第二被钉扎层中的至少一个施加的附加磁场，基本上仅在写入电流也被施加时，自由层被切换到多个状态中的每一个状态。

公开(公告)号：US20080291721A1

公开(公告)日：2008-11-27

申请号：US11763800

申请日：2007-06-15

申请人： Dmytro Apalkov ,  Zhanjie Li

发明人： Dmytro Apalkov ,  Zhanjie Li

IPC分类号： G11C11/15

CPC分类号： G11C11/1675 ,  G11C11/161

摘要： A method and system for providing a magnetic element is described. The magnetic element includes a first pinned layer, a first spacer layer, a free layer, a second spacer layer, and a second pinned layer. The first and second pinned layers have first and magnetizations oriented in first and second directions, respectively. The first and second spacer layers are nonferromagnetic. The first and second spacer layers are between the free layer and the first and second pinned layers, respectively. The magnetic element is configured either to allow the free layer to be switched to each of multiple states when both a unidirectional write current is passed through the magnetic element and the magnetic element is subjected to a magnetic field corresponding to the each states or to allow the free layer to be switched to each of the plurality of states utilizing a write current and an additional magnetic field that is applied from at least one of the first pinned layer and the second pinned layer substantially only if the write current is also applied.

摘要翻译： 描述了一种用于提供磁性元件的方法和系统。 磁性元件包括第一固定层，第一间隔层，自由层，第二间隔层和第二固定层。 第一和第二固定层分别具有在第一和第二方向上取向的第一和第二磁化。 第一和第二间隔层是非铁磁性的。 第一和第二间隔层分别位于自由层和第一和第二钉扎层之间。 磁元件被配置为允许当单向写入电流通过磁性元件并且磁性元件经受对应于每个状态的磁场时，自由层被切换到多个状态中的每一个状态，或者允许 利用写入电流和从第一被钉扎层和第二被钉扎层中的至少一个施加的附加磁场，基本上仅在写入电流也被施加时，自由层被切换到多个状态中的每一个状态。

公开(公告)号：US08213221B2

公开(公告)日：2012-07-03

申请号：US13105797

申请日：2011-05-11

申请人： Yunfei Ding ,  Zhanjie Li

发明人： Yunfei Ding ,  Zhanjie Li

IPC分类号： G11C11/00

CPC分类号： G11B33/1493 ,  B82Y25/00 ,  G11B5/112 ,  G11C11/161 ,  G11C11/1675 ,  H01F10/3263 ,  H01F41/34 ,  Y10S977/935

摘要： Techniques and device designs associated with devices having magnetically shielded magnetic or magnetoresistive tunnel junctions (MTJs) and spin valves that are configured to operate based on spin-transfer torque switching.

摘要翻译： 与具有磁屏蔽磁阻或磁阻隧道结（MTJ）的设备相关联的技术和设备设计以及配置为基于自旋转移转矩切换操作的自旋阀。

公开(公告)号：US20110210410A1

公开(公告)日：2011-09-01

申请号：US13105797

申请日：2011-05-11

申请人： Yunfei Ding ,  Zhanjie Li

发明人： Yunfei Ding ,  Zhanjie Li

IPC分类号： H01L29/82

CPC分类号： G11B33/1493 ,  B82Y25/00 ,  G11B5/112 ,  G11C11/161 ,  G11C11/1675 ,  H01F10/3263 ,  H01F41/34 ,  Y10S977/935

摘要： Techniques and device designs associated with devices having magnetically shielded magnetic or magnetoresistive tunnel junctions (MTJs) and spin valves that are configured to operate based on spin-transfer torque switching.

摘要翻译： 与具有磁屏蔽磁阻或磁阻隧道结（MTJ）的设备相关联的技术和设备设计以及配置为基于自旋转移转矩切换操作的自旋阀。