Applied Physics and Mathematics Annotation << Back ON THE DEFORMATIONAL BEHAVIOR OF CU1.8SE SINGLE CRYSTALS AT ROOM TEMPERATURE P.E. PANFILOV, N.N. BIKKULOVA, R.A. YAKSHIBAEV, G.R. AKMANOVA, D.I. SAFARGALIEV, A.R. KURBANGULOV Copper selenide belongs to superionic conductors with mixed ionic-electronic conductivity and has a wide range of homogeneity. A number of features of the Cu–Se system, namely: the presence of a phase transformation in the Cu2Se compound, a high diffusion rate of Cu ions, a deviation from stoichiometry, and a high Se vapor pressure at elevated temperatures make it relevant to carry out a complex of experimental studies to develop and optimize the methodology for obtaining a bulk material based on copper selenide. This work is aimed at studying the deformation behavior under compression of Cu1.8Se single crystals at room temperature. Keywords: copper selenide, superionic conductor, crystal structure, deformation, Young’s modulus. DOI: 10.25791/pfim.04.2022.1233 Pp. 03-09.