Synthesis, Structure, and Thermal Properties of the YVO4–BiVO4 Oxides

The Y0.4Bi0.6VO4 and Y0.6Bi0.4VO4 solid solutions two-phase at xBi = 0.95, 0.90, and 0.80 have been formed by the solid-phase synthesis from the initial Y2O3, Bi2O3, and V2O5 oxides burned in air at a temperature of 1173 K for 200 h and their high-temperature heat capacity has been measured in the range of 350–1000 K by differential scanning calorimetry. The thermodynamic properties of the solution solutions have been calculated using the data obtained.