VAPOR QUENCHED AG1-XFEX ALLOYS - INSITU MOSSBAUER STUDIES

Metastable alloys of Ag1-xFex (x = 0.17, 0.30, 0.50, 0.54, 0.56, 0.80 and 1.0) were prepared by vapor condensation onto kapton substrates maintained at low temperature. The X-ray diffraction spectra of all Ag/Fe samples, with x < 0.56, suggested the formation of a fcc structure with a very small grain size. The present work reports in situ Mossbauer measurements on Ag-Fe films and occurrence of aging effects. All the spectra obtained at 5.5 K show magnetic hyperfine field distributions characteristic of disordered alloys and also texture effects. The results for composition dependence of lattice parameters and average hyperfine fields are compared with values reported in the literature for films prepared in different conditions.