ION-BEAM MIXING OF AG FE AND IN/FE LAYERS STUDIED BY HYPERFINE TECHNIQUES/

Ion-beam mixing of the thermally immiscible systems Fe/Ag and Fe/In by 450- and 600-keV Xe ions was investigated by means of perturbed angul ar correlation (PAC) and conversion electron Mossbauer spectroscopy. T he In-111 PAC probe atoms were either implanted into the layers at 400 keV or deposited by evaporation at the metal-metal interface. Using t hese different methods of doping it was possible to distinguish betwee n the mixing process at the interface acid ''long-range'' effects. Dif ferent magnetic hyperfine fields associated with one or two Ag atoms c lose to the hyperfine probe were identified via both hyperfine methods . The results are compared with those of a supersaturated homogeneous Fe(Ag) alloy.