Study of the Fe−Ni interface by conversion electron Mössbauer spectroscopy

Nickel-gamma iron interfaces obtained by growing films of Fe on Ni substrates are studied using CEMS. We have found that a) intermixing is confined to two atomic layers, b) Fe atoms deposited on structural defects of the Ni (111) surfaces are magnetically polarized, c) Fe epitaxially grown on Ni is highly susceptible at room temperature. Moreover the Ni−Fe interface shows Neel-type magnetic anisotropy.