Electronegativity difference, atomic size parameter and widths of supercooled liquid regions of Sb2S3–As2S3–Sb2Te3 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 2 S 3 –As 2 S 3 –Sb 2 Te 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 2 S 3 –As 2 S 3 –Sb 2 Te 3 system depends on electronegativity difference and atomic size parameter.