Electrical and magnetic properties of AuFe alloys

We study the electronic and magnetic structure of AuFe alloys for varying F e concentrations. The basis of our study is the augmented-space recursion i n conjunction with the local spin-density approximation. We study magnetism from an itinerant-electron viewpoint and show that at low Fe concentration s the random phase arrangement is the more stable phase at T = 0 K as compa red to the ferromagnetic, antiferromagnetic and paramagnetic arrangements. At higher concentrations the ferromagnetic arrangement becomes the most sta ble but the average moment decreases with increasing Au concentration.