Abstract
Two-dimensional Monte Carlo of the total pair distribution functions g(r) is determined for Se80Te20 and Se80Te15Sb5 alloys, and then it used to assemble the three-dimensional atomic configurations using the reverse Monte Carlo simulation. The partial pair distribution functions g(ij)(r) indicate that the basic structure unit in the Se80Te15Sb5 glass is diantimony tri-selenide units connected together through Se-Se and Se-Te chain. The structure of Se80Te20 alloys is a chain of Se-Te and Se-Se in addition to some rings of Se atoms.