Semiconductor Physics, Quantum Electronics & Optoelectronics, 21 (3), P. 273-276 (2018).
DOI: https://doi.org/10.15407/spqeo21.03.273

Studying the mechanical properties of (Cu1–xAgx)7GeS5I mixed crystals by using the micro-indentation method
V.V. Bilanych, А.V. Bendak, K.V. Skubenych, A.I. Pogodin, V.S. Bilanych, I.P. Studenyak

Uzhhorod National University, Faculty of Physics, 3, Narodna Sq., 88000 Uzhhorod, Ukraine E-mail: studenyak@dr.com

Abstract. (Cu1–xAgx)7GeS5I mixed crystals were grown using the Bridgman–Stockbarger method. The hardness dependences on the indentation depth profiles in (Cu 1–x Ag x ) 7 GeS 5 I mixed crystals were investigated. The measurements of mechanical parameters were performed at the room temperature by using the micro-indentation method. Variations of the hardness of (Cu 1–x Ag x ) 7 GeS 5 I mixed crystals were interpreted in the framework of the deformation gradient model. The influence of cation Cu→Ag substitution on mechanical parameters of (Cu 1–x Ag x ) 7 GeS 5 I mixed crystals was studied.

Keywords: superionic crystals, cation substitution, mechanical properties, micro-hardness, micro-indentation.

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