Novel chalcohalide glasses from the Ge-S-AgI system and some physicochemical features

作者：Monchev Boris^*; Petkova Tamara; Petkov Plamen; Vassilev Sasho

来源：Journal of Materials Science, 2007, 42(23): 9836-9840.

DOI：10.1007/s10853-007-1868-3

Novel bulk glassy samples of the pseudoternary chalcohalide Ge-S-AgI system have been prepared. Glasses have been obtained by monotemperature synthesis in evacuated ampoules and standard melt-quenching technique. The glass-forming region in the system determined by X-ray diffraction is situated in the S-rich region on the Ge-S side (S/Ge = 1.2, 1.5, 2 and 3) with AgI content up to 20 mol.%. Some physicochemical properties of the amorphous materials and their compositional dependence have been investigated. In addition, the theoretical average coordination number (Z), the total constraints per atom (N-co), the radial (N-a) and axial (N-b) strength of the bonds have been calculated and related to the experimental results.

• 出版日期2007-12
• 单位北京化工大学