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：US08760823B1

公开(公告)日：2014-06-24

申请号：US13332313

申请日：2011-12-20

申请人： Laurence L. Chen ,  Anup G. Roy ,  Yunfei Ding ,  Ming Mao ,  Amritpal S. Rana ,  Daniele Mauri

发明人： Laurence L. Chen ,  Anup G. Roy ,  Yunfei Ding ,  Ming Mao ,  Amritpal S. Rana ,  Daniele Mauri

IPC分类号： G11B5/39

CPC分类号： G11B5/3903 ,  G11B5/3912 ,  G11B5/3932 ,  G11B5/398

摘要： A method and system provide a magnetic transducer having an air-bearing surface (ABS). The magnetic transducer includes a first shield, a read sensor, at least one soft magnetic bias structure and at least one hard bias structure. The read sensor includes a sensor layer that has at least one edge in the track width direction along the ABS. The soft magnetic bias structure(s) are adjacent to the edge(s) of the sensor layer. The soft magnetic bias structure has a first permeability. The soft bias structure(s) are between the read sensor and the hard bias structure(s). The hard bias structure(s) are adjacent to a portion of the soft bias structure(s) and have a second permeability. The first permeability is at least ten multiplied by the second permeability.

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。 磁换能器包括第一屏蔽，读取传感器，至少一个软磁偏置结构和至少一个硬偏压结构。 读取传感器包括沿ABS沿轨道宽度方向具有至少一个边缘的传感器层。 软磁偏置结构与传感器层的边缘相邻。 软磁偏置结构具有第一磁导率。 柔性偏置结构位于读取传感器和硬偏置结构之间。 硬偏压结构与软偏压结构的一部分相邻并且具有第二磁导率。 第一渗透率至少为乘以第二渗透率的十倍。

公开(公告)号：US09007728B1

公开(公告)日：2015-04-14

申请号：US13533040

申请日：2012-06-26

申请人： Feng Liu ,  Prakash Mani ,  Christian Kaiser ,  Laurence L. Chen

发明人： Feng Liu ,  Prakash Mani ,  Christian Kaiser ,  Laurence L. Chen

IPC分类号： G11B5/39 ,  G11B5/60

CPC分类号： G11B5/60 ,  G01R33/098 ,  G11B5/3163 ,  G11B5/3932 ,  G11B2005/0008 ,  H01L43/12 ,  Y10T428/1121 ,  Y10T428/1143

摘要： A method comprises providing a magnetic element including a free layer, a pinned layer, a nonmagnetic spacer layer between the free and pinned layers, and a pinning layer adjacent the pinned layer. The free layer is biased in a first direction. The pinned layer has a first layer having a first magnetization, a second layer having a second magnetization, and a nonmagnetic layer between the first and second layer. The first magnetization is pinned parallel to a second direction substantially perpendicular to the first direction and substantially perpendicular to the ABS. The second magnetization is antiparallel to the second direction. The pinning layer is oriented along the second direction. The method further comprises providing a hard bias structure having a hard bias magnetization, initializing the hard bias magnetization along the second direction, performing at least one thermal treatment, and resetting the hard bias magnetization substantially along the first direction.

摘要翻译： 一种方法包括提供包括自由层，钉扎层，在自由层和被钉扎层之间的非磁性间隔层的磁性元件和邻近被钉扎层的钉扎层。 自由层在第一方向上偏置。 固定层具有具有第一磁化的第一层，具有第二磁化的第二层和在第一层和第二层之间的非磁性层。 第一磁化被平行于基本上垂直于第一方向并基本上垂直于ABS的第二方向被钉扎。 第二磁化与第二方向反平行。 钉扎层沿着第二方向定向。 该方法还包括提供具有硬偏压磁化的硬偏压结构，沿着第二方向初始化硬偏磁化强度，执行至少一个热处理，以及基本上沿第一方向复位硬偏磁。

公开(公告)号：US08077435B1

公开(公告)日：2011-12-13

申请号：US12275125

申请日：2008-11-20

申请人： Feng Liu ,  Shaoping Li ,  Laurence L. Chen

发明人： Feng Liu ,  Shaoping Li ,  Laurence L. Chen

IPC分类号： G11B5/33

CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3912 ,  G11B2005/3996

摘要： Disclosed is a read head for reading data from a magnetic media. The read head includes a bottom magnetic shield layer, a top magnetic shield layer, and a read sensor disposed between the bottom and top magnetic shield layers. The read sensor is configured for sensing changes in a magnetic field of the magnetic media positioned under the read sensor. The read sensor has a front end adjacent to an air bearing surface (ABS) and a back end opposite the front end. The read head also includes a back magnetic shield layer positioned between the bottom and top magnetic shield layers and behind the back end of the read sensor distal to the ABS.

摘要翻译： 公开了一种用于从磁性介质读取数据的读取头。 读头包括底部磁屏蔽层，顶部磁屏蔽层和设置在底部和顶部磁屏蔽层之间的读取传感器。 读取传感器被配置为感测位于读取传感器下方的磁性介质的磁场的变化。 读取传感器具有与空气轴承表面（ABS）相邻的前端和与前端相对的后端。 读头还包括位于底部和顶部磁屏蔽层之间的背面磁屏蔽层，并且远离ABS的读取传感器的后端之后。

公开(公告)号：US08599520B1

公开(公告)日：2013-12-03

申请号：US13332275

申请日：2011-12-20

申请人： Feng Liu ,  Laurence L. Chen ,  Yimin Guo ,  Amritpal S. Rana ,  Shaoping Li

发明人： Feng Liu ,  Laurence L. Chen ,  Yimin Guo ,  Amritpal S. Rana ,  Shaoping Li

IPC分类号： G11B5/127 ,  G11B5/39

CPC分类号： G11B5/398 ,  G01R33/09 ,  G01R33/093 ,  G11B5/3912 ,  G11B5/3932

摘要： A method and system provide a magnetic read transducer having an air-bearing surface (ABS). The magnetic transducer includes a first shield, a second shield, and a read sensor between the first shield and the second shield. The read sensor extends along a stripe height direction perpendicular to the ABS. A first portion of the read sensor at the ABS has a first width in a track width direction parallel to the ABS. A second portion of the read sensor is recessed from the ABS along the stripe height direction and has a second width in the track width direction. The second width is greater than the first width.

摘要翻译： 一种方法和系统提供具有空气轴承表面（ABS）的磁读取换能器。 磁换能器包括在第一屏蔽和第二屏蔽之间的第一屏蔽，第二屏蔽和读取传感器。 读取传感器沿垂直于ABS的条带高度方向延伸。 ABS处的读取传感器的第一部分具有平行于ABS的轨道宽度方向上的第一宽度。 读取传感器的第二部分沿着条带高度方向从ABS凹入，并且在轨道宽度方向上具有第二宽度。 第二宽度大于第一宽度。

公开(公告)号：US08227023B1

公开(公告)日：2012-07-24

申请号：US12472965

申请日：2009-05-27

申请人： Feng Liu ,  Prakash Mani ,  Christian Kaiser ,  Laurence L. Chen

发明人： Feng Liu ,  Prakash Mani ,  Christian Kaiser ,  Laurence L. Chen

IPC分类号： G11B5/127

CPC分类号： G11B5/60 ,  G01R33/098 ,  G11B5/3163 ,  G11B5/3932 ,  G11B2005/0008 ,  H01L43/12 ,  Y10T428/1121 ,  Y10T428/1143

摘要： A method and system for providing a magnetic transducer are disclosed. The method and system include providing a magnetic element including a free layer, a nonmagnetic spacer layer, a pinned layer, and a pinning layer adjacent to the pinned layer. The free layer is to be biased in a first direction. The pinning layer biases the pinned layer magnetization in a second direction. The pinning layer is oriented along the second direction. A hard bias structure is adjacent to the magnetic element. The hard bias structure magnetization is initialized such that it has a nonzero component along the second direction. The method and system also include performing thermal treatment(s) after initializing the hard bias magnetization. The thermal treatment(s) are above room temperature. The method and system further include resetting the hard bias magnetization substantially along the first direction after the thermal process(es) are performed.

摘要翻译： 公开了一种用于提供磁换能器的方法和系统。 所述方法和系统包括提供包括自由层，非磁性间隔层，钉扎层和与被钉扎层相邻的钉扎层的磁性元件。 自由层将沿第一方向偏置。 钉扎层在第二方向上偏压钉扎层的磁化强度。 钉扎层沿着第二方向定向。 硬偏压结构与磁性元件相邻。 硬偏置结构磁化被初始化，使得其具有沿着第二方向的非零分量。 该方法和系统还包括在初始化硬偏磁化之后进行热处理。 热处理高于室温。 所述方法和系统还包括在执行热处理之后基本上沿着第一方向重置硬偏压磁化。

公开(公告)号：US08164864B2

公开(公告)日：2012-04-24

申请号：US12504030

申请日：2009-07-16

申请人： Christian Kaiser ,  Laurence L. Chen ,  Qunwen Leng

发明人： Christian Kaiser ,  Laurence L. Chen ,  Qunwen Leng

IPC分类号： G11B5/127

CPC分类号： H01F10/3254 ,  B82Y25/00 ,  G01R33/098 ,  G11B5/3906 ,  G11B5/3932 ,  H01F10/3272 ,  H01F10/3286 ,  H01L43/08 ,  H01L43/12 ,  Y10T29/49034 ,  Y10T428/1114

摘要： A method and system for providing a magnetic transducer are disclosed. The method and system include providing a magnetic element that includes a free layer, a pinned layer, and a nonmagnetic spacer layer between the free layer and the pinned layer. The nonmagnetic spacer layer is a tunneling barrier layer. The free layer is configured to be biased in a first direction. The pinned layer has a pinned layer magnetization configured to be pinned in a second direction that is at a first angle from perpendicular to the ABS. The first angle is nonzero and different from ninety degrees. The second direction and the first direction form a second angle that is different from ninety degrees.

摘要翻译： 公开了一种用于提供磁换能器的方法和系统。 该方法和系统包括在自由层和钉扎层之间提供包括自由层，钉扎层和非磁性间隔层的磁性元件。 非磁性间隔层是隧道势垒层。 自由层被配置为沿第一方向偏置。 钉扎层具有被钉扎层磁化，其被构造成在与ABS垂直的第一角度处于第二方向上被钉扎。 第一个角度是非零，不同于九十度。 第二方向和第一方向形成与九十度不同的第二角度。

公开(公告)号：US08422176B1

公开(公告)日：2013-04-16

申请号：US13297204

申请日：2011-11-15

申请人： Qunwen Leng ,  Laurence L. Chen ,  Yimin Guo ,  Yuankai Zheng ,  Mahendra Pakala

发明人： Qunwen Leng ,  Laurence L. Chen ,  Yimin Guo ,  Yuankai Zheng ,  Mahendra Pakala

IPC分类号： G11B5/39

CPC分类号： G11B5/3906 ,  G01R33/093 ,  G11B5/3929 ,  H01F10/30 ,  H01F10/3254 ,  H01F10/3272

摘要： A method and system for providing a magnetic read transducer is described. The magnetic read transducer includes a bilayer magnetic seed layer, an antiferromagnetic (AFM) layer, and a read sensor. The bilayer magnetic seed layer includes a Ni1-xFex layer and a Ni1-yFey layer on the Ni1-xFex layer, where x is at least 0.3 and not more than 1 and where y is not more than 0.19. The AFM layer resides on the bilayer magnetic seed layer. The read sensor is on the AFM layer.

摘要翻译： 描述了一种用于提供磁读取换能器的方法和系统。 磁读取传感器包括双层磁性种子层，反铁磁（AFM）层和读取传感器。 双层磁性种子层在Ni1-xFex层上包含Ni1-xFex层和Ni1-yFey层，其中x为至少0.3且不大于1，其中y不大于0.19。 AFM层位于双层磁性种子层上。 读取传感器位于AFM层上。