Magnetic anisotropy of disordered Mn-Pt layered surface compounds on Pt(111) - art. no. 064428

The magnetic moments and the anisotropy energy of surface compounds formed by MnxPt(1-x) (x is an element of [0,1]) on a Pt(111) substrate are calcula ted by means of the fully relativistic spin-polarized screened Korringa-Kuh n-Rostuker method. The binary compositions are modeled within the coherent potential approximation. Different Mn concentrations at each layer have bee n considered in order to understand the influence on the magnetic propertie s of both the chemical environment of the Mn atoms and the segregation of P t from the bulk. Special emphasis is devoted to the study of the layered se quences Pt/MnxPt(1-x).