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

被引：0
|
作者：
V. L. Volkov
N. I. Kadyrova
G. S. Zakharova
M. V. Kuznetsov
N. V. Podval’naya
K. N. Mikhalev
Yu. G. Zainulin
机构：
[1] Russian Academy of Sciences,Institute of Solid
[2] Russian Academy of Sciences,State Chemistry, Ural Division
来源：
Russian Journal of Inorganic Chemistry | 2007年 / 52卷
关键词：
Perovskite; Vanadium Oxide; CaCu; Copper Cation; Calcium Atom;
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摘要：
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.
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页码：329 / 333
页数：4
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