N. I. Kadyrova

Ion state of atoms and the properties of perovskite-like compound CaCu3V4O12

The binding energies and valence state of atoms in the perovskite-like compound CaCu3V4O12 have been determined using XPS spectroscopy. The stoichiometry of this phase is formulated as Ca2+Cu2+Cu2+(V25+V24+O12). Under an air atmosphere, the phase interacts with water vapor and oxygen. As a result, Ca(OH)2 is formed on its surface, the Cu+ and V4+ ion concentrations decrease, and the Cu2+ and V5+ concentrations increase in association. Raman spectra show shortened cation-anion bond lengths and cation-anion-cation bond angles in CaCu3V4O12 compared to perovskite CuVO3; the two structures are alike. The electrical conductivity, magnetic susceptibility, thermal and sensor properties of CaCu3V4O12 in aqueous salt solutions have been studied.

High-pressure defect phase CexCu3V4O12

AbstractNonstoichiometric perovskite oxide CexCu3V4O12 (space group Im

High-pressure/high-temperature synthesis, crystal structure, and electrical properties of CaCu3 − xFexV4O12

\bar 3

High-pressure nonstoichiometric phase SmxCu3V4O12

Z = 2, a = 7.264–7.328 Å) with cationic vacancies was prepared barothermally. This compound has metal-type conductivity, paramagnetic properties, and a phase transition.

Preparation specifics and properties of AMn3V4O12 (А = Ca, Ce, and Sm) high-pressure phases

AbstractWe report the first synthesis, at high pressure and temperature (p = 6.0−8.0 GPa, t = 1000°C), of SrxCu3V4O12 (x = 0.67−1.0), a cation-deficient perovskite-like phase of variable composition (sp. gr. Im

Atomic structure and ionic conductivity of glassy materials based on silver sulfide

\bar 3