Patent ID: 7050275
Filing Date: 2006-05-23
Classification: B82Y,G01R,G11B,H01F,Y10T

Abstract:
1. An exchange coupled film comprising: a nonmagnetic seed layer comprising α and Cr, α being at least one of Fe, Ni, and Co; an antiferromagnetic layer; and a ferromagnetic layer, the seed layer, the antiferromagnetic layer, and the ferromagnetic layer being deposited in that order from the bottom, magnetization of the ferromagnetic layer being directed in a predetermined direction by an exchange coupling magnetic field produced at an interface between the antiferromagnetic layer and the ferromagnetic layer, wherein a Cr content of the seed layer is 35 to 60 atomic percent, a thickness of the seed layer is 10 to 200 Å, and wherein a crystal structure of the seed layer is a face-centered cubic structure and substantially a single phase, and wherein a body-centered cubic structure is substantially not present.