ION-BEAM MIXING OF FE AL MULTILAYERS - A CEMS STUDY/

We report here on the study of the modifications induced by Ar+ and Xe + bombardment of Fe/Al multilayered structures by means of conversion electron Mossbauer spectroscopy (CEMS). The initial multilayered thin film structures had thicknesses from 10/2 nm to 10/42 nm of Fe/Al. The ion bombardments were performed at substrate temperatures from 77 to 473 K, and a total fluence of 5 x 10(15) cm-2. The Mossbauer spectra w ere analysed on the basis of the results existing in the literature fo r the Fe-Al system, and also based on the results obtained from the sa me multilayered structures subjected to thermal annealing in the tempe rature range between 523 and 623 K. The analyses showed that amorphous and equilibrium phases are formed. The modified multilayer structure is related to the bombarding ionic species and the substrate temperatu re during bombardment.