SURFACE MAGNETISM OF FE ON AG(100) - A HE-ASTERISK SPILL POLARIZED STUDY

Surface magnetism of 10 ML Fe(100) films grown on Ag(100) at 150 K and 300 K has been studied by Spin Polarized Metastable Deexcitation Spec troscopy (SPMDS). The data show a negative magnetization of the s-p el ectrons of iron in the vacuum region at the distances (3-5 A) probed b y SPMDS. The extreme surface sensitivity of this spectroscopy allows t o observe the magnetization of silver segregated at the surface of the film grown at room temperature. Evidence on the correlation between t he segregation of silver and the iron magnetization is also reported.