TY  - JOUR
T1  - Influence of cation Si 4+ ↔ Ge 4+ and P 5+ ↔ Ge 4+ substitution on the mechanical parameters of single crystals Ag 7 (Si 1–x Ge x )S 5 I and Ag 6+x (P 1–x Ge x )S 5 I
AU  - I.O. Shender
AU  - A.I. Pogodin
AU  - M.J. Filep
AU  - T.O. Malakhovska
AU  - O.P. Kokhan
AU  - V.S. Bilanych
AU  - K.V. Skubenych
AU  - O.I. Symkanych
AU  - V.Yu. Izai
AU  - L.M. Suslikov
JO  - Semiconductor Physics, Quantum Electronics & Optoelectronics
VL  - 26
IS  - 4
SP  - 408
EP  - 414
PY  - 2023
DO  - 10.15407/spqeo26.04.408
UR  - https://doi.org/10.15407/spqeo26.04.408
AB  - Herein we present the results of microhardness investigations aimed at monocrystalline samples of Ag 7 (Si 1–x Ge x )S 5 I (0, 0.2, 0.4, 0.6, 0.8, 1) and Ag 6+x (P 1–x Ge x )S 5 I (0, 0.25, 0.5, 0.75, 1) solid solutions. The dependence of microhardness H on the load P and composition were investigated. It has been observed that the microhardness dependence on the applied load is characterized by a tendency to decrease with increasing the load. It indicates a presence of “normal” size effect in both Ag 7 (Si 1–x Ge x )S 5 I and Ag 6+x (P 1–x Ge x )S 5 I (0, 0.25, 0.5, 0.75, 1) solid solutions. The revealed size effects of hardness in single crystals of Ag 7 (Si 1–x Ge x )S 5 I and Ag 6+x (P 1-x Ge x )S 5 I solid solutions have been analyzed within the framework of the gradient theory of plasticity. The corresponding parameters of the model of geometrically necessary dislocations have been determined.
KW  - argyrodite
KW  - single crystal
KW  - microhardness.
ER  -