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Engineering Physics

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ONE-DIMENSIONAL DIATOMIC MODEL FOR CALCULATING THE CONSTANTS OF INTERACTION OF COPPER AND SILVER CHALCOGENIDES
N.N. BIKKULOVA, R.A. YAKSHIBAEV, A.R. KURBANGULOV, L.V. TSYGANKOVA, G.R. AKMANOVA, A.Kh. KUTOV

This paper presents a diatomic model for describing the crystalline superionic state of copper and silver chalcogenides. A one-dimensional diatomic chain is considered where two metal atoms in series with one chalcogen atom alternate. The values of the force constants g and f were calculated for copper and silver chalcogenides with superionic properties and ordinary Cu2O and Ag2O semiconductors. Calculations showed that the interaction constants f and F are sensitive to changes in g and for superionic conductors in the nonsuperionic phase correspond the force constants g, F and f, which are smaller in magnitude than for compounds that do not have superionic properties.
Key words: copper and silver chalcogenides, superionic conductors, one-dimensional diatomic model, anharmonism of vibrations.


DOI: 10.25791/infizik.11.2019.1008

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Pp. 12-16.

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