Heat Capacity and Thermodynamic Functions of GdGaTi2O7 in the Temperature Range of 320-1000 K

L. T. Denisova, M. S. Molokeev, L. G. Chumilina, V. V. Ryabov & V. M. Denisov Physics of the Solid State

DOI: https://doi.org/10.1134/S1063783421040065

Titanate GdGaTi2O7 has been obtained from the initial oxides Gd2O3, Ga2O3, and TiO2 by the solid-state synthesis via annealing in air at temperatures of 1273 and 1573 K. The crystal structure of the titanate has been refined by X-ray diffraction. The high-temperature (320–1000 K) heat capacity of the compound has been measured by differential scanning calorimetry. Based on the experimental dependence Cp = f(T), the main thermodynamic functions of the titanate have been calculated.