Patent ID: 7433162
Filing Date: 2008-10-07
Classification: B82Y,G01R,G11B,H01F,H01L

Abstract:
1. An antiferromagnetically exchange-coupled structure in a magnetic device of the type having a substrate and a plurality of ferromagnetic layers, the structure being formed on the substrate and comprising: a first layer formed of a substantially-chemically-ordered alloy having a tetragonal crystalline structure, the alloy selected from the group consisting of alloys of AuCu, FePt, FePd, AgTi3, Pt Zn, PdZn, IrV, CoPt and PdCd; an antiferromagnetic layer in contact with the first layer and formed of a substantially-chemically-ordered alloy comprising X and Mn and having a tetragonal crystalline structure, wherein X is selected from the group consisting of Pt, Ni, Ir, Pd and Rh; and a ferromagnetic layer exchange-coupled with the antiferromagnetic layer.