Magnetic properties of (ConPdm)(r) superstructures on Pd(100) and Pd(111)

The magnetic properties of (ConPdm)(r) superstructures on Pd(100) and Pd(11 1) are evaluated using the fully-relativistic spin-polarized screened Korri nga-Kohn-Rostoker method. It is found that only in the case of a Pd(111) su bstrate such superstructures exhibit perpendicular magnetism, while on a Pd (100) substrate the magnetization is oriented in-plane. Also investigated i s the effect of interdiffusion in repeated superstructures. By using the in homogeneous coherent potential approximation (CPA) for layered systems the effect of ordering into (repeated) superstructures can be described in an a b-initio-like manner. It is found that already small amounts of interdiffus ion can be decisive for the actual value of the magnetic anisotropy energy.