Multiple reorientation transition of the magnetization of free surfaces of Fe on Ag(100)

The magnetic properties of Ag(100)/Feₙ, $n<~16,$ are investigated using the fully relativistic spin-polarized screened Korringa-Kohn-Rostocker method. It is found that (a) ferromagnetic interlayer coupling is the most stable magnetic configuration of free surfaces of Fe on Ag(100) and (b) that in the vicinity of $n=5$ a multiple reorientation transition of the magnetization occurs. The results obtained are in excellent agreement with available experimental data and give an interesting explanation for the occurrence of temperature-dependent effects seen experimentally.