Abstract
Polycrystalline samples of gallium neodymium germanate NdGaGe2O7 were synthesized by solid-phase reactions from a stoichiometric mixture of oxides Nd2O3, Ga2O3, and GeO2 under sequential stepwise calcination in the air at temperatures in the range 1273–1473 K. The heat capacity–temperature dependence for the synthesized samples was studied by differential scanning calorimetry in the range 350–1000 K. The experimental Cp = f(T) data were used to calculate the thermodynamic functions (enthalpy, entropy, and reduced Gibbs energy changes) of NdGaGe2O7.
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