Glass formation in oxide-halide systems

Recently the halide and oxidechalide glasses have been the object of great interest because they are promising materials for optics. Up to now many unsolved problems exist in relation to their glass formation, chemical resistance and the thermal stability of these glasses. An object of our investigation is the study of the glass formation in halide systems with the participation of PbCl₂, NaCl, KCl, BaCl₂ and oxide-halide systems with the participation of the TeO₂. The ranges of glass formation in the systems: TeO₂-PbCl₂-NaCl-KCl and TeO₂-BaCl₂-CdCl₂-NaCl are determined at different cooling rates. Stable glasses possessing low melting temperature, good chemical resistance were prepared.