Abstract
The EuBiGeO5 compound has been prepared from stoichiometric mixtures of Eu2O3, Bi2O3, and GeO2 by solid-phase synthesis with subsequent multistage annealing in the temperature range of 1003–1223 K. The molar heat capacity of polycrystalline bismuth europium germanate has been determined by differential scanning calorimetry in the temperature range 350–1000 K. The experimental temperature dependence of heat capacity Cp = f(T) contains no anomalies and can be fitted using the Maier–Kelley equation. The key thermodynamic functions of bismuth europium germanate (changes in enthalpy, entropy, and Gibbs free energy) have been calculated.
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