Heat capacity of bismuth-cobalt oxide doped by erbium in the temperature range of 193-547 K

For the first time the heat capacities of compound Bi12.5Er1.5CoO22.3 have been measured in the temperature range of 193-547 K. Differential scanning calorimetry has been used for measurements. The temperature dependence of heat capacity has been well described by a polynomial Cop,m (T) = 665.46 + 0.82227 T − 3.9692·10−4T2 − 5.3798·106/T2. On the basis of smoothed heat capacities the enthalpy and entropy increments have been calculated (T = 193-547 K).