Etudes des verres du pseudo-ternaire La2S3Bi2S3Ga2S3, en relation avec le diagramme de phases et la spectroscopie infra-rouge

Abstract The phase diagram of the La2S3Ga2S3Bi2S3 ternary system is described. DTA measurements have been carried out on a large variety of glass, and the glass formation domain has been defined with the investigation of Tg, Tc, and the endothermic peaks. Infrared absorption spectra have been studied. The vibrational assignment is discussed in relation to the composition of the glass.