Substitution of praseodymium for cadmium and lead in the Pr5Mo3O16+δ structure

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Abstract

Solid solutions based on fluorite-like phase in systems Pr5–xMexMo3O16+δ, where Me = Cd, Pb, were obtained by solid-phase synthesis from metal oxides. The phase content after calcination at 1000°C was studied by X-ray diffraction, the substitution limits and the dependences of the unit cell parameter on the composition of the systems were determined. The parameters of the crystal structure of solid solutions were specified by the Rietveld method. The influence of magnesium oxide additives on the sinterability of cadmium-containing solid solutions has been established. Isomorphous substitution of praseodymium by lead and cadmium leads to a decrease in the conductivity value of the samples in the studied systems.

About the authors

A. O. Sidorenko

Donetsk State University

Email: chebyshev.konst@mail.ru
Donetsk, 283001 Russia

T. S. Berezhnaya

North-Caucasus Federal University

Email: chebyshev.konst@mail.ru
Stavropol, 355017 Russia

L. V. Pasechnik

Donetsk State University

Email: chebyshev.konst@mail.ru
Donetsk, 283001 Russia

I. Y. Ukleina

North-Caucasus Federal University

Email: chebyshev.konst@mail.ru
Stavropol, 355017 Russia

A. V. Guseva

North-Caucasus Federal University

Email: chebyshev.konst@mail.ru
Stavropol, 355017 Russia

K. A. Chebyshev

North-Caucasus Federal University

Author for correspondence.
Email: chebyshev.konst@mail.ru
Stavropol, 355017 Russia

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