New oxysulphide glasses from the Sb 2O 3–Sb 2S 3·M xS system

Abstract

New oxysulphide glasses involving Sb 2O 3, Sb 2S 3 and M x S(M=K, Na, Zn), which have different properties from classical oxide glasses and pure chalcogenides glasses, have been prepared. Glass-forming regions are given for the Sb 2O 3–Sb 2S 3, Sb 2O 3–MxS binary systems and ternary systems. These glasses are easy to prepare and chemically stable. The thermal and optical properties of the glasses have been measured and compared with Sb 2O 3 glass and Sb 2O 3–PbCl 2 glass. The oxysulphide glasses are transparent from 0.7 μm to 7.0 μm and T c, crystallization temperatures, T g, glass transition temperatures, Δ T( T c− T g) > 90°C.