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Fizika Tverdogo Tela, 2021 Volume 63, Issue 8, Pages 1056–1061 (Mi ftt8063)

Semiconductors

Synthesis, crystal structure, and thermal properties of substituted titanates Bi$_{2}$Pr$_{2}$Ti$_{3}$O$_{12}$ and Bi$_{2}$Nd$_{2}$Ti$_{3}$O$_{12}$

L. T. Denisovaa, M. S. Molokeevab, N. A. Galiakhmetovaa, V. M. Denisova, G. V. Vasil'eva

a Siberian Federal University, Krasnoyarsk, Russia
b L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia

Abstract: Titanates Bi$_{2}$Pr$_{2}$Ti$_{3}$O$_{12}$ and Bi$_{2}$Nd$_{2}$Ti$_{3}$O$_{12}$ have been obtained by the solid-phase synthesis using sequential annealing of the Bi$_{2}$O$_{3}$, Nd$_{2}$O$_{3}$, Pr$_{6}$O$_{11}$, and TiO$_{2}$ stoichiometric mixtures in air at temperatures of 1003–1323 K. Their crystal structure has been established by X-ray diffractometry and the high-temperature heat capacity has been determined by differential scanning calorimetry. Based on the experimental $C_p=f(T)$ data, the main thermodynamic functions have been calculated.

Keywords: substituted bismuth titanate, solid-state synthesis, crystal structure, high-temperature heat capacity, thermodynamic functions.

Received: 31.03.2021
Revised: 03.04.2021
Accepted: 03.04.2021

DOI: 10.21883/FTT.2021.08.51153.070


 English version:
Physics of the Solid State, 2021, 63:8, 1159–1164

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© Steklov Math. Inst. of RAS, 2025