High-Temperature Heat Capacity of Y0.65Pr0.35BiGeO5 and Y0.65Nd0.35BiGeO5 in the Range 350–1000 K


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Abstract

Oxides Y0.65Pr0.35BiGeO5 and Y0.65Nd0.35BiGeO5 have been synthesized by a ceramic method. The heat capacity of fine crystalline samples has been studied in the range 350–1000 K by differential scanning calorimetry. The Cp = f(T) dependences can be described by the Maier–Kelley equation. The thermodynamic functions of these oxides—changes in enthalpy, entropy, and reduced Gibbs energy—have been calculated from the experimental data on high-temperature heat capacity.

About the authors

L. T. Denisova

Siberian Federal University

Author for correspondence.
Email: antluba@mail.ru
Russian Federation, Krasnoyarsk, 660041

A. D. Izotov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: antluba@mail.ru
Russian Federation, Moscow, 119991

Yu. F. Kargin

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: antluba@mail.ru
Russian Federation, Moscow, 119991

N. V. Belousova

Siberian Federal University

Email: antluba@mail.ru
Russian Federation, Krasnoyarsk, 660041

N. A. Galiakhmetova

Siberian Federal University

Email: antluba@mail.ru
Russian Federation, Krasnoyarsk, 660041

E. O. Golubeva

Siberian Federal University

Email: antluba@mail.ru
Russian Federation, Krasnoyarsk, 660041

V. M. Denisov

Siberian Federal University

Email: antluba@mail.ru
Russian Federation, Krasnoyarsk, 660041

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