摘要:
The present invention is directed to a spin valve sensor for use in a data storage system, that is adapted to receive a sense current and produce a GMR effect in response to applied magnetic fields. The spin valve sensor includes first and second ferromagnetic free layers, a spacer layer positioned between the first and second ferromagnetic free layers, and a biasing component. The first ferromagnetic free layer has a magnetization (M1) in a first direction, when in a quiescent (non-biased) state. The second ferromagnetic free layer has a magnetization (M2) in a second direction that is anti-parallel to the first direction, when in a quiescent (non biased) state.
摘要翻译:本发明涉及一种用于数据存储系统中的自旋阀传感器,其适于接收感测电流并响应所施加的磁场产生GMR效应。 自旋阀传感器包括第一和第二铁磁自由层,位于第一和第二铁磁自由层之间的间隔层和偏置部件。 当处于静止(非偏置)状态时,第一铁磁自由层在第一方向上具有磁化(M SUB 1 H)。 当处于静止(非偏置)状态时,第二铁磁自由层在与第一方向反平行的第二方向上具有磁化(M SUB 2 N)。
摘要:
A magnetoresistive sensor (10) having permanent magnet stabilization includes a magnetoresistive layer (12), at least one permanent magnet (14a or 14b), and first and second current contacts (16a and 16b). The magnetoresistive layer (12) has an active sensing region (18) having a first thickness, and at least one under layer region (26a or 26b), with each under layer region (26a or 26b) having a second thickness that is less than the first thickness. Each permanent magnet (14a or 14b) is formed upon an under layer region (26a or 26b) of the magnetoresistive layer (12), and the first and second contacts (16a and 16b) are electrically coupled to the active region (18).
摘要:
A differentiated sensor includes a pair of magnetic layers having magnetization directions that are substantially antiparallel in a quiescent state. At least one of the magnetic layers is a free layer. A spacer layer is disposed between the pair of magnetic layers.
摘要:
A magnetoresistive (MR) head (100) for use in a data storage system includes an MR sensor layer (170) and a soft adjacent layer (SAL) (120) disposed along a length of the MR sensor layer and adapted to vertically bias the MR sensor layer. A spacer layer (130) is formed between the MR sensor layer and the SAL in a central region (200) of the MR head. The MR sensor layer and the SAL are independently stabilized by first and second permanent magnet (PM) layers (160, 140), each formed in contact with one of the SAL and the MR sensor layer in first and second wing regions (210, 220) of the MR head. This allows a layer of low resistivity material (150) to be placed between the first and second PM layers in the first and second wing regions in order to lower the resistance of the MR head.