专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5325253A Stabilization of magnetoresistive transducer using canted exchange bias 失效
标题翻译：使用斜面交换偏置来稳定磁阻传感器
公开(公告)号：US5325253A
公开(公告)日：1994-06-28
申请号：US18612
申请日：1993-02-17
申请人： Mao-Min Chen , Timothy J. Gallagher , Wang: Po-Kang
发明人： Mao-Min Chen , Timothy J. Gallagher , Wang: Po-Kang
IPC分类号： G01R33/09 , G11B5/03 , G11B5/39 , H01L43/08
CPC分类号： G11B5/3932 , G11B5/3935 , G11B5/399
摘要： A magnetoresistive (MR) read transducer and method of fabricating same. A soft magnetic layer and an MR layer extend over a central active region and passive end regions of the transducer. A nonmagnetic spacer layer separates the soft magnetic film layer and MR layer and extends over the central active region and at least part of both passive end regions. An antiferromagnetic layer directly contacts the MR layer only in the end regions and produces an exchange bias field between the antiferromagnetic layer and the MR layer that is oriented at a preselected acute angle to the longitudinal direction of the transducer. This results in the MR layer being oriented at the preselected acute angle and the soft magnetic film layer in the passive end regions being transversely oriented by magnetostatic coupling to the MR layer. To fabricate the transducer, the antiferromagnetic layer is annealed in an external field above the Neel temperature to produce the canted exchange bias field. As a result of the canting, the magnetic moments of the central active region and the passive end regions are matched during a read operation.
摘要翻译：磁阻（MR）读取传感器及其制造方法。软磁层和MR层在传感器的中心有源区和被动端区延伸。非磁性间隔层将软磁性膜层和MR层分离并延伸到中心有源区域和两个被动端区域的至少一部分。反铁磁层仅在端部区域直接接触MR层，并且在反铁磁性层和MR层之间产生交换偏置场，MR层以与传感器的纵向方向成预定的锐角取向。这导致MR层被定向在预选的锐角处，并且被动端区域中的软磁膜层通过静磁耦合到MR层被横向取向。为了制造换能器，反铁磁层在Neel温度以上的外部场中进行退火，产生斜面交换偏置场。作为倾斜的结果，在读取操作期间中心有源区域和被动端部区域的磁矩匹配。

IPRDB

热门服务

关于我们

友情链接

联系方式