Patent ID: 6678128
Filing Date: 2004-01-13
Classification: B82Y,G01R,G11B,H01F,Y10T

Abstract:
An exchange coupling film comprising:an antiferromagnetic layer; a ferromagnetic layer arranged such that an interface is formed between said antiferromagnetic layer and said ferromagnetic layer and such that an exchange coupling magnetic field is produced at the interface; and a seed layer formed on a side of said antiferromagnetic layer opposite to said ferromagnetic layer, said seed layer having face-centered cubic crystals with a (111) plane substantially oriented in parallel with said interface; wherein the crystalline structure of at least part of said antiferromagnetic layer comprises CuAuâ€”I type face-centered ordered lattice, wherein said antiferromagnetic layer and said ferromagnetic layer have crystalline orientations in which (111) planes of said antiferromagnetic layer and said ferromagnetic layer are oriented in parallel with said interface, and wherein a non-aligned crystal lattice state exists at at least part of an interface between said antiferromagnetic layer and said seed layer.