Atomic structure of 2NaY-Ga2S3 (Y = Cl, Br, I) liquids

Alkali halide sulphide and selenide glasses MY-Ga2X3-GeX2 (M = Li, Na, Rb, Cs; Y = Cl, Br, I; X = S, Se) are promising hosts for active and passive optical devices, solid-state battery applications and chemical sensing. The glass-forming regions clearly show an important role of alkali halide and gallium sulphide interactions since the maximum glass-forming range was obtained along the composition line leading to a specific composition 2MY-Ga2X3. Our previous neutron diffraction measurements have shown a mixed gallium and alkali environment in these glasses. Our goal is to verify whether the mixed environment exist in the glass-forming melt and obtain missing structural information for more simple quasi-binary systems to build-up a realistic structural model for technologically important glasses.