FEATURES OF THE EFFECT OF SILVER CHALCOGENIDES ON THE SOFTENING TEMPERATURE OF CHALCOGENIDE GLASSES WITH IONIC CONDUCTIVITY

Yu. S. Tverjanovits; Тверьянович Ю. С.; T. R. Fazletdinov; Фазлетдинов Т. Р.; V. V. Tomayev; Томаев В. В.

doi:10.31857/S042485702308008X

FEATURES OF THE EFFECT OF SILVER CHALCOGENIDES ON THE SOFTENING TEMPERATURE OF CHALCOGENIDE GLASSES WITH IONIC CONDUCTIVITY

Authors: Tverjanovits Y.S.¹, Fazletdinov T.R.¹, Tomayev V.V.²^,3
Affiliations:
1. St. Petersburg State University
2. St.Petersburg Institute of Technology (Technical University)
3. Saint-Petersburg Mining University
Issue: Vol 59, No 8 (2023)
Pages: 442-447
Section: Articles
URL: https://journal-vniispk.ru/0424-8570/article/view/139297
DOI: https://doi.org/10.31857/S042485702308008X
EDN: https://elibrary.ru/XYELBG
ID: 139297

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Abstract

The analysis of the temperature change of softening of chalcogenide glass with ion conductivity by silver from the content of its chalcogenides is given. Explanation of peculiarities of temperature change of softening of glass on the basis of chalcogenides of silver is offered by coexistence of covalent bonds of silver-chalcogen (Ag-Ch) and metallophilic bonds of silver-silver (Ag-Ag). The large number of systems considered demonstrates the general regularity, which allows to assume, that the degree of connectivity of silver in the HHS mesh due to formation of it in addition to covalent metal-philic bonds actually significantly exceeds its formal oxidation degree.
Metallophilic interactions are expected to influence not only the softening temperature, but also the variation of many other important properties in the glass, including the ion transfer mechanism by silver.

Keywords

chalcogenides of silver, chalcogenide glass, ionic conductivity, plasticity, metallophilic bonds, silver ions, glass mesh.

References

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