High-temperature X-ray diffraction study of Ag<sub>2</sub>S-Cu<sub>2</sub>S system

Asadov Y. G., Aliyev Y. I., Dashdemirov A. O., Jabarov S. H., Naghiyev T.

MODERN PHYSICS LETTERS B, vol.34, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34
  • Publication Date: 2020
  • Doi Number: 10.1142/s0217984921500184
  • Journal Name: MODERN PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC, zbMATH
  • Azerbaijan State University of Economics (UNEC) Affiliated: No

Abstract

Single crystals of AgCuS, Ag1.55Cu0.45S, Ag1.55Cu0.45S and Ag1.55Cu0.45S compounds were synthesized using the Bridgman method. The crystal structures and phase transitions were studied by X-ray diffraction (XRD) method in the high temperature ranges. The monoclinic, orthorhombic, hexagonal and cubic phases were observed in the temperature range of 300K <= T <= 870K. Thermal expansion coefficients were calculated for different phases according to the lattice parameters. It was determined that the values of thermal expansion coefficients differ in different planes depending on the space group and symmetry.