Heat Capacity and Thermodynamic Properties of Gd2Ge2O7 from 350 to 1000 K

Gadolinium germanate, Gd2Ge2O7, has been prepared by solid-state reaction, via multistep firing in the temperature range 1273–1473 K, and its high-temperature heat capacity has been determined by differential scanning calorimetry. The Cp(T) data have been used to evaluate the thermodynamic functions (enthalpy increment, entropy change, and reduced Gibbs energy) of the oxide compound.