Abstract
Tm2Ge2O7 and TmInGe2O7 germanates are obtained via solid-phase synthesis from stoichiometric mixtures of initial oxides through multi-stage annealing in the temperature range 1273–1473 K. The heat capacity of oxide compounds is measured using differential scanning calorimetry. The temperature dependences of enthalpy, enthropy, and normalized Gibbs energy are calculated from the resulting experimental data.
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