公开(公告)号：US07370404B2

公开(公告)日：2008-05-13

申请号：US10857168

申请日：2004-05-28

申请人： Hardayal Singh Gill ,  Jinshan Li ,  Kenneth Donald Mackay ,  Kouichi Nishioka ,  Andy Cuong Tran

发明人： Hardayal Singh Gill ,  Jinshan Li ,  Kenneth Donald Mackay ,  Kouichi Nishioka ,  Andy Cuong Tran

IPC分类号： G11B5/127

CPC分类号： G11B5/3903 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3163 ,  G11B5/3909 ,  G11B5/3932 ,  G11B2005/0008 ,  G11B2005/0016 ,  G11B2005/3996 ,  Y10T29/49021 ,  Y10T29/49032 ,  Y10T29/49034 ,  Y10T29/49043 ,  Y10T29/49044

摘要： A spin valve sensor in a read head has a spacer layer which is located between a self-pinned AP pinned layer structure and a free layer structure. The free layer structure is longitudinally stabilized by first and second hard bias layers which abut first and second side surfaces of the spin valve sensor. The AP pinned layer structure has an antiparallel coupling layer (APC) which is located between first and second AP pinned layers (AP1) and (AP2). The invention employs a resetting process for setting of the magnetic moments of the AP pinned layers by applying a field at an acute angle to the head surface in a plane parallel to the major planes of the layers of the sensor. The resetting process sets a proper polarity of each AP pinned layer, which polarity conforms to processing circuitry employed with the spin valve sensor.

摘要翻译： 读头中的自旋阀传感器具有位于自固定AP钉扎层结构和自由层结构之间的间隔层。 自由层结构通过邻接自旋阀传感器的第一和第二侧表面的第一和第二硬偏压层纵向稳定。 AP钉扎层结构具有位于第一和第二AP钉扎层（AP 1）和（AP 2）之间的反平行耦合层（APC）。 本发明采用了一种复位过程，用于通过在与传感器的各层的主平面平行的平面中对头表面施加锐角的场来设定AP钉扎层的磁矩。 复位过程设置每个AP固定层的正确极性，极性符合与自旋阀传感器一起使用的处理电路。

公开(公告)号：US06866751B2

公开(公告)日：2005-03-15

申请号：US10104213

申请日：2002-03-21

申请人： Hardayal Singh Gill ,  Andy Cuong Tran

发明人： Hardayal Singh Gill ,  Andy Cuong Tran

IPC分类号： G11B5/00 ,  G11B5/31 ,  G11B5/39 ,  C23C14/34 ,  H04R21/00 ,  G11B5/27

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3932 ,  G11B2005/0008 ,  G11B2005/0016 ,  G11B2005/3996 ,  Y10T29/49021 ,  Y10T29/49027 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044

摘要： A spin valve sensor in a read head has a spacer layer which is located between a self-pinned AP pinned layer structure and a free layer structure. The free layer structure is longitudinally stabilized by first and second hard bias layers which abut first and second side surfaces of the spin valve sensor. The AP pinned layer structure has an antiparallel coupling layer (APC) which is located between first and second AP pinned layers (AP1) and (AP2). The invention employs a preferential setting of the magnetic moments of the AP pinned layers by applying a field at an acute angle to the head surface in a plane parallel to the major planes of the layers of the sensor. The preferential setting sets a proper polarity of each AP pinned layer, which polarity conforms to processing circuitry employed with the spin valve sensor.

摘要翻译： 读头中的自旋阀传感器具有位于自固定AP钉扎层结构和自由层结构之间的间隔层。 自由层结构通过邻接自旋阀传感器的第一和第二侧表面的第一和第二硬偏压层纵向稳定。 AP钉扎层结构具有位于第一和第二AP钉扎层（AP1）和（AP2）之间的反平行耦合层（APC）。 本发明通过在与传感器的各层的主平面平行的平面中对头表面施加锐角的场来采用AP钉扎层的磁矩的优先设置。 优先设置设置每个AP固定层的正确极性，极性符合与自旋阀传感器一起使用的处理电路。