PHYSICOCHEMICAL MATERIALS RESEARCH-LOW-TEMPERATURE HEAT CAPACITY OF SAMARIUM ZIRCONATE (Sm_2Zr_2O_7)

摘要

The heat capacity of Sm_2Zr_2O_7 is investigated for the first time over a temperature range of 60–300 K by adiabatic calorimetry. The values of heat capacity, entropy, enthalpy, and reduced Gibbs energy are determined in standard conditions:C°_p (298.15 K) = 236.21 ± 0.94 J · mol.~(-1) · K~(-1); S°(298.15 K) = 247.3 ± 2 J · mol.~(-1) · K~(-1); Φ′(298.15 K) = 114.9 ± 1.7 J · mol.~(-1)· K~(-)1; H°(298.15 K) -H° (0 K) = 39,479 ± 197 J · mol.~(-1).