Multicomponent GeSe2-CdI2-TeO2 (Bi2O3) systems: glass formation and properties

• Published in: The Journal of physics and chemistry of solids Vol. 63; no. 5; pp. 815 - 819
• Main Authors: VASSILEV, V. S, IVANOVA, Z. G, DOSPEISKA, E. S, BOYCHEVA, S. V
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier 01.05.2002
• Subjects: Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; Glass transitions; Materials science; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Phase diagrams of other materials; Physics; Specific phase transitions; Phase diagrams; Inorganic compounds; Melting; Phase composition; Phase transformations; Ternary systems; Crystallization; Bismuth oxides; Experimental study; Density; Germanium selenides; Microhardness; Glass formation; Tellurium oxides; Glass transition; Cadmium iodides; Chemical composition
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/S0022-3697(01)00234-7

The glass-forming regions of the GeSe2-CdI2-TeO2 (I), GeSe2-CdI2-Bi2O3 (II) and GeSe2-TeO2-Bi2O3 (III) systems have been determined. The obtained glassy phases have been characterized by their basic physicochemical parameters such as temperatures of glass transition, crystallization, and melting, density and microhardness. The phase T-X diagram of the GeSe2-CdI2 system, which is the basic joint line for systems I and II, has been specified. Three non-variant equilibria (two eutectic and one syntectic) have been observed at temperatures 350, 280 and 375 C for compositions containing 15, 95 and 33.3 mol% GeSe2, resp. A new intermediate phase with probable composition of 2CdI2*GeSe2 has been formed. 8 refs.