Method and system for providing an improved sensor stack for a recording head

摘要

A method and system for providing a magnetic transducer is described. The method and system include providing a magnetic shield, an insertion layer on the magnetic shield, an antiferromagnetic (AFM) layer, a pinned layer magnetically coupled with the AFM layer, a nonmagnetic spacer layer, and a free layer. The magnetic shield has a texture and a grain size. The insertion layer has a thickness that is sufficiently large that the AFM layer is magnetically decoupled from the magnetic shield and sufficiently small that the AFM layer is structurally coupled with the magnetic shield. The pinned layer resides between the AFM layer and the nonmagnetic spacer layer. The nonmagnetic spacer layer resides between the free layer and the pinned layer.

主权项

1. A magnetic transducer comprising:
a magnetic shield consisting of a single layer having a shield crystallographic structure including a texture and a grain size; an insertion layer on and sharing a first interface with the magnetic shield, the insertion layer having a thickness; an antiferromagnetic (AFM) layer having an AFM crystallographic structure, an AFM texture, and residing on the insertion layer, the AFM layer sharing a second interface with the insertion layer, the thickness of the insertion layer being sufficiently large that the AFM layer is magnetically decoupled from the magnetic shield and sufficiently small that the AFM crystallographic structure of the AFM layer is structurally coupled with the shield crystallographic structure of the magnetic shield, the AFM texture corresponding to and being the same as the texture; a pinned layer magnetically coupled with the AFM layer; a nonmagnetic spacer layer, the pinned layer residing between the AFM layer and the nonmagnetic spacer layer; a free layer, the nonmagnetic spacer layer residing between the free layer and the pinned layer.