Refined heat capacity of LaPO4 in the temperature range 0–1600 K

The critical analysis of literature heat capacity data in the temperature range 0–1600 K was carried out. It was shown that joining of Cp(T) curves obtained by the different methods was performed improperly. Experimental heat capacity of LaPO4 was measured in the region 16–324 K by the adiabatic calorimetry. The obtained data allows to consist the results of different works and to fit the lanthanum orthophosphate heat capacity in the wide temperature range. Standard thermodynamic properties were calculated on the basis of the refined heat capacity data: image = 102.5 ± 0.2 J K−1 mol−1, S0(298.15 K) = 108.7 ± 0.2 J K−1 mol−1, H0(298.15 K) − H0(0 K) = 17.44 ± 0.03 kJ mol−1, Φ0(298.15 K) = 50.21 ± 0.20 J K−1 mol−1.