Calculation of the heat capacities of complex oxides
https://doi.org/10.34680/2076-8052.2024.1(135).31-42
Abstract
The technology for producing a complex oxide is based on knowledge of its thermophysical characteristics, in particular, heat capacity. To calculate its temperature dependence, a previously proposed thermodynamic model of a two-phase local equilibrium region was used. The numerical values of the parameters and coefficients of the model are obtained from a comparison of the theoretical curve with the experimental data given in the literature. It is shown that the construction relations adequately describe experimental arrays of various complex oxides not only in the limited temperature ranges studied, but also make it possible to calculate the heat capacities of oxides in the range from 0 K to their melting point. The need for additional experimental study of the transformation in neodymium orthoniobate in the region of 1000 K is indicated.
About the Author
S. V. Terekhov
Galkin Donetsk Institute for Physics and Engineering
Russian Federation
Russian Federation
Donetsk.
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Review
For citations:
Terekhov S.V. Calculation of the heat capacities of complex oxides. Title in english. 2024;(1(135)):31-42. (In Russ.) https://doi.org/10.34680/2076-8052.2024.1(135).31-42
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