CONDENSED MATTER
Anisotropy of the elastic properties of disordered cubic vanadium monoxide VO$_y$ in the homogeneity region
A. I. Gusev Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, 620990, Yekaterinburg, Russia
Abstract:
The anisotropy of the elastic properties of cubic vanadium monoxide with a wide homogeneity region has been studied for the first time. The elastic constants
$c_{11}$,
$c_{12}$, and
$c_{44}$ have been estimated as functions of the oxygen content
$y$ in the homogeneity region of VO
$_{0.75}$–VO
$_{1.25}$ of disordered cubic vanadium monoxide VO
$_y$. The elastic stiffness constants
${{c}_{{ij}}}$ of disordered cubic monoxide VO
$_y$ decrease with increasing relative oxygen content
$y$. The elastic moduli depend on the crystallographic direction
$[hkl]$. Large changes in the elastic characteristics of VO
$_y$ depending on the direction
$[hkl]$ indicate a strong anisotropy of the elastic properties of disordered cubic vanadium monoxide. According to the ratio of the bulk
$B$ and shear
$G$ moduli, polycrystalline vanadium monoxide can be considered as a ductile material.
Received: 21.04.2025
Revised: 24.04.2025
Accepted: 24.04.2025
DOI:
10.31857/S0370274X25060084
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