公开(公告)号：US08597528B1

公开(公告)日：2013-12-03

申请号：US13076103

申请日：2011-03-30

申请人： Anup G. Roy ,  Ming Mao

发明人： Anup G. Roy ,  Ming Mao

IPC分类号： B44C1/22

CPC分类号： H01L43/12 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3163 ,  G11B5/3932

摘要： A method and system for fabricating a magnetic transducer is described. A magnetic junction is defined from the magnetoresistive stack. The magnetic junction has a top and a plurality of sides. The step of defining the magnetic junction redeposits a portion of the magnetoresistive stack and forms fencing adjacent to the top of the magnetic junction. At least one hard bias structure is provided after the magnetic junction is defined. A first portion of the at least one hard bias structure is substantially adjacent to the magnetoresistive junction in a track-width direction. The magnetic junction is ion beam planarized, thereby substantially removing the fencing.

摘要翻译： 描述了用于制造磁换能器的方法和系统。 从磁阻叠层定义磁结。 磁性接头具有顶部和多个侧面。 限定磁结的步骤重新沉积磁阻堆叠的一部分并且形成与磁结的顶部相邻的围栏。 在确定了磁结后，提供了至少一个硬偏置结构。 至少一个硬偏压结构的第一部分基本上与轨道宽度方向上的磁阻结相邻。 磁结是离子束平坦化的，从而基本上除去围栏。

公开(公告)号：US08270126B1

公开(公告)日：2012-09-18

申请号：US12140211

申请日：2008-06-16

申请人： Anup G. Roy ,  Mahendra Pakala

发明人： Anup G. Roy ,  Mahendra Pakala

IPC分类号： G11B5/33

CPC分类号： G11B5/3932 ,  G01R33/0052 ,  G01R33/093 ,  H01F10/123

摘要： A method and system for providing a hard bias structure include providing a seed layer for a hard bias structure. The seed layer has a lattice constant and a natural growth texture. The method and system further include depositing the hard bias layer for the hard bias structure on the seed layer. The natural growth texture of the seed layer corresponds to a texture for the hard bias layer. The hard bias layer has a bulk lattice constant. Providing the seed layer includes forming a first plasma of a first deposition gas configured to expand the seed layer lattice constant if the bulk lattice constant is greater than the seed layer constant. Depositing the hard bias layer further includes forming a second plasma of a second deposition gas configured to expand the bulk lattice constant if the seed layer lattice constant is greater than the bulk lattice constant.

摘要翻译： 用于提供硬偏压结构的方法和系统包括为硬偏压结构提供种子层。 种子层具有晶格常数和自然生长纹理。 所述方法和系统还包括在种子层上沉积硬偏压结构的硬偏置层。 种子层的天然生长结构对应于硬偏压层的织构。 硬偏置层具有体晶格常数。 提供种子层包括形成第一沉积气体的第一等离子体，其被配置为如果体晶格常数大于种子层常数则扩展晶种晶格恒定。 沉积硬偏压层还包括形成第二沉积气体的第二等离子体，其被配置为如果晶种晶格常数大于体晶格常数则扩大体晶格常数。

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：US08607438B1

公开(公告)日：2013-12-17

申请号：US13309357

申请日：2011-12-01

申请人： Wei Gao ,  Guanxiong Li ,  Ming Mao ,  Chih-Ching Hu ,  Guanghong Luo ,  Miao Wang ,  Zhihong Zhang ,  Anup G. Roy

发明人： Wei Gao ,  Guanxiong Li ,  Ming Mao ,  Chih-Ching Hu ,  Guanghong Luo ,  Miao Wang ,  Zhihong Zhang ,  Anup G. Roy

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/3903 ,  G01R33/093 ,  G11B5/3163

摘要： A read sensor for a transducer is fabricated. The transducer has a field region and a sensor region corresponding to the sensor. A sensor stack is deposited. A hybrid mask including hard and field masks is provided. The hard mask includes a sensor portion covering the sensor region and a field portion covering the field region. The field mask covers the field portion of the hard mask. The field mask exposes the sensor portion of the hard mask and part of the sensor stack between the sensor and field regions. The sensor is defined from the sensor stack in a track width direction. Hard bias layer(s) are deposited. Part of the hard bias layer(s) resides on the field mask. Part of the hard bias layer(s) adjoining the sensor region is sealed. The field mask is lifted off. The transducer is planarized.

摘要翻译： 制造用于换能器的读取传感器。 传感器具有对应于传感器的场区域和传感器区域。 传感器堆叠被沉积。 提供了包括硬掩模和磁场掩模的混合掩模。 硬掩模包括覆盖传感器区域的传感器部分和覆盖场区域的场部分。 场掩模覆盖硬掩模的场部分。 场掩模将传感器和场区域之间的硬掩模的传感器部分和传感器堆叠的一部分暴露。 传感器从传感器堆叠在轨道宽度方向上定义。 硬偏置层被沉积。 硬偏置层的一部分位于场掩模上。 邻近传感器区域的一部分硬偏压层被密封。 场地面罩被提起。 传感器平坦化。

公开(公告)号：US08611054B1

公开(公告)日：2013-12-17

申请号：US13444723

申请日：2012-04-11

申请人： Changhe Shang ,  Daniele Mauri ,  Kuok San Ho ,  Anup G. Roy ,  Ming Mao

发明人： Changhe Shang ,  Daniele Mauri ,  Kuok San Ho ,  Anup G. Roy ,  Ming Mao

IPC分类号： G11B5/39

CPC分类号： G11B5/3932 ,  G01R33/093 ,  G11B5/3909 ,  G11B2005/3996 ,  H01F10/3218 ,  H01F10/3254

摘要： A magnetic read transducer is described with a magnetoresistive sensor that has a free layer, and an antiferromagnetically-coupled (AFC) soft bias layer for magnetically biasing the free layer. The free layer has a first edge in a track width direction along an air-bearing surface (ABS). At least a portion of the AFC soft bias layer is conformal to at least a portion of a second edge of the free layer, and situated to form a magnetic moment at an angle with respect to a center line of the free layer. The center line of the free layer extends in the same direction as the free layer first edge that is in the track width direction along the ABS.

摘要翻译： 用具有自由层的磁阻传感器和用于磁偏置自由层的反铁磁耦合（AFC）软偏置层来描述磁读取传感器。 自由层具有沿空气轴承表面（ABS）的轨道宽度方向上的第一边缘。 AFC柔性偏置层的至少一部分与自由层的第二边缘的至少一部分共形，并且位于相对于自由层的中心线形成一个角度的磁矩。 自由层的中心线沿与ABS沿轨道宽度方向的自由层第一边缘相同的方向延伸。