Phase Transitions and Electroconducting Properties
of BIMEVOX Solid Electrolytes

E. A. Fortal’nova^{a, b}, V. V. Murasheva^b, M. G. Safronenko^b, N. U. Venskovskii^b,
G. M. Kaleva^a, and E. D. Politova^a

^a Karpov Research Institute of Physical Chemistry, ul. Vorontsovo pole 10, Moscow, 105064 Russia

^b Peoples Friendship University, ul. Miklukho-Maklaya 6, Moscow, 117198 Russia

e-mail: fortalnova_elena@mail.ru

Received January 31, 2008

Abstract—Ceramic solid solutions Bi₄(V_1xMe_x)₂O_11y (x= 00.3, Me = Zr, Ga, Fe) were obtained by solid-
state synthesis. The homogeneity regions, x 0.3 for Me = Ga, Fe and x 0.15 for Me = Zr, were established.
Structure parameters, microstructure, and the thermal, dielectric, and conducting properties of the samples were
studied. The concentration and temperature ranges of the existence of different polymorphs and the concentra-
tion ranges x over which the high-conductivity phase was stable at ~20C were established. Using DTA, DSC,
and dielectric spectroscopy, the and phase transitions were revealed. It was found that the elec-
trical conductivity of the solid solutions decreased as x increased.

DOI: 10.1134/S0036024408100038

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