The heat capacity of the congruently melting compounds K2CeBr5 and K3CeBr6 was measured by differential
scanning calorimetry in the temperature range from 400 K up to 1100 K. A linear heat capacity dependence on
temperature was used to fit the experimental data. Through combination of these results with the entropy at
298.15 K, and enthalpies of phase transitions, the thermodynamic functions of K2CeBr5 and K3CeBr6 were calculated
up to T = 1100 K.
Phase equilibrium in the PrBr3-CsBr binary system was established from Differential Scanning Calorimetry (DSC). This system has two compounds, Cs3PrBr6 and CsPr2Br7, and three eutectics located at molar fraction of PrBr3 (x = 0.108; 850 K), (x = 0.453; 767 K), and (x = 0.757, 870 K), respectively. Cs3PrBr6 undergoes a solid-solid phase transition at 726 K and melts congruently at 1051 K. CsPr2Br7 undergoes a solid-solid phase transition at 835 K, and melts congruently at 896 K. The electrical conductivity of PrBr3-CsBr liquid mixtures was measured down to temperatures below solidification over the whole composition range. Results obtained are discussed in term of possible complex formation.
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