Electronegativity difference, atomic size parameter and widths of supercooled liquid regions of Sb 2S 3–As 2S 3–Sb 2Te 3 glasses

Abstract

Electronegativity difference Δ x , atomic size parameter δ and width of supercooled liquid region (Δ T x = T x − T g , where T x is the onset crystallization temperature and T g the glass transition temperature) are analysed for glasses of the ternary system Sb 2S 3–As 2S 3–Sb 2Te 3 as a function of arsenic atomic percentage. Correlation is investigated between the two bonds parameters (Δ x and δ) and the width of supercooled liquid region Δ T x (which is generally reliable in estimating the stability against the crystallization of the glasses). It is found that this width of supercooled liquid region of the glasses in Sb 2S 3–As 2S 3–Sb 2Te 3 system depends on electronegativity difference and atomic size parameter.