Mössbauer study of amorphous alloys irradiated with energetic heavy ions

Mössbauer spectroscopy was applied to study radiation damage in amorphous alloys irradiated with ⁴⁰Ar ($\text{E = 225}\text{MeV}$) or ¹³²Xe ($\text{E = 120}\text{MeV}$) ions at room temperature. In the magnetically split Mössbauer spectra dose dependent decreases of the intensity of the 2nd and 5th lines as well as of the average hyperfine magnetic field were observed. The changes were also analysed using the hyperfine field distribution obtained from the spectra. The results are interpreted in terms of defect creation and structural changes of short range order of irradiated amorphous alloys.