Investigation on vibrational and structural properties of amorphous Se1−xSx alloys produced by mechanical alloying by Raman spectroscopy, X-ray diffraction, EXAFS and RMC simulations

The local atomic order of amorphous Se1−xSx alloys, x=0.20,0.30x=0.20,0.30, produced by mechanical alloying were studied by Raman scattering, X-ray diffraction, EXAFS and reverse Monte Carlo simulations of their total structure factors and EXAFS oscillations on Se K edge. The results obtained were compared to those found for other Se1−xSx, x=0,0.10x=0,0.10 alloys, and the behavior of Raman modes, average coordination numbers and interatomic distances and bond-angle distribution functions as sulphur concentration increases were determined.