Thermodynamic Properties of Y₂Ti₂O₇ and Eu₂Ti₂O₇ in the Temperature Range 7–1800 K

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发表日期：

2024年9月9日

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P. G. Gagarin,
A. V. Gus’kov,
A. V. Khoroshilov,
V. N. Gus’kov,
O. N. Kondrat’eva,
M. A. Ryumin,
G. E. Nikiforova,
K. S. Gavrichev

摘要

Abstract

The temperature dependence of the heat capacity of Y₂Ti₂O₇ and Eu₂Ti₂O₇ with a pyrochlore structure in the temperature range of 7–1800 K has been studied. The existence of a small shallow anomaly of the heat capacity of europium titanate in the range of 10–60 K was confirmed. The thermodynamic properties (entropy, enthalpy change, and reduced Gibbs energy) were calculated. Based on the results of calculation of the Gibbs energy of formation of the titanates from oxides it was concluded that both titanates are thermodynamically stable in the high temperature region.

Thermodynamic Properties of Y2Ti2O7 and Eu2Ti2O7 in the Temperature Range 7–1800 K

摘要

Thermodynamic Properties of Y₂Ti₂O₇ and Eu₂Ti₂O₇ in the Temperature Range 7–1800 K