Thermal and Elastic Properties of Ce  x  Th 1 –   x  O 2  Mixed Oxides: A Self-Consistent Thermodynamic Approach

A. N. Filanovich; A. A. Povzner

doi:10.1134/S1063784219010109

Thermal and Elastic Properties of Ce_xTh_{1 –}_xO₂ Mixed Oxides: A Self-Consistent Thermodynamic Approach

Authors: Filanovich A.N.¹, Povzner A.A.¹
Affiliations:
1. Yeltsin Ural Federal University
Issue: Vol 64, No 1 (2019)
Pages: 74-77
Section: Solid State
URL: https://journals.rcsi.science/1063-7842/article/view/202684
DOI: https://doi.org/10.1134/S1063784219010109
ID: 202684

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Abstract
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Abstract

A self-consistent thermodynamic model of thorium dioxide and its dilute alloy Ce_0.05Th_0.95O₂, which are of great importance for atomic power engineering, has been constructed based on generalized Debye and Einstein models. In terms of this model, the temperature dependences of the bulk modulus, density, and heat capacity of the systems have been obtained. The anharmonicity of the acoustical and optical modes of the crystal lattice and its change in passing from ThO₂ to Ce_0.05Th_0.95O₂ has been discussed.

About the authors

A. N. Filanovich

Yeltsin Ural Federal University

Author for correspondence.
Email: a.n.filanovich@urfu.ru
Russian Federation, Yekaterinburg, 620002

A. A. Povzner