公开(公告)号：US09390735B1

公开(公告)日：2016-07-12

申请号：US14675074

申请日：2015-03-31

Applicant: Seagate Technology LLC

Inventor： Zhiran Wang ,  Kevin A. McNeill ,  Robert Lamberton

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/3932 ,  G11B5/398

Abstract: A data reader may have a magnetoresistive stack positioned on an air bearing surface and consisting of at least a magnetically free structure that continuously extends from the air bearing surface with a first stripe height. A side shield can be separated from the magnetoresistive stack on the ABS and configured with a first magnetic layer having the first stripe height and a second magnetic layer having a third stripe height from the air bearing surface with the third stripe height being greater than the first stripe height. The side shield can be anti-ferromagnetically biased by a synthetic antiferromagnetic top shield structure that contacts the side shield through a transition metal material layer. The first stripe height can be configured to match a magnetically free layer of the magnetoresistive stack and the second stripe height can be configured to match a magnetically fixed layer of the magnetoresistive stack.

Abstract translation: 数据读取器可以具有位于空气轴承表面上并由至少一个无磁结构组成的磁阻堆叠，该结构从空气轴承表面以第一条纹高度连续延伸。 侧屏蔽可以与ABS上的磁阻堆叠分离，并配置有具有第一条带高度的第一磁性层和具有距空气支承表面的第三条带高度的第二磁性层，第三条纹高度大于第一条带高度 条纹高度。 侧屏蔽可以通过合成的反铁磁顶层屏蔽结构进行反铁磁偏置，该结构通过过渡金属材料层接触侧屏蔽。 可以将第一条纹高度配置成匹配磁阻堆叠的无磁层，并且可以将第二条纹高度配置成与磁阻堆叠的磁性固定层相匹配。