Measurements of the Heat Capacity of Erbium Titanate Er2Ti2O7
Bissengaliyeva M.R. Bespyatov M.A. Gogol D.B. Sadyrbekov D.T. Taimassova S.T.
8 September 2022American Chemical Society
Journal of Chemical and Engineering Data
2022#67Issue 92059 - 2066 pp.
The temperature dependence of the erbium titanate Er2Ti2O7 heat capacity has been studied over the range from 4.5 to 324 K by adiabatic calorimetry. A component related to the presence of the Schottky anomaly has been isolated from the total heat capacity of the compound. Based on the experimental data, the thermodynamic functions of Er2Ti2O7 have been determined over the range from 5 to 320 K. The standard thermodynamic functions of the compound at 298.15 K are as follows: Cp,298.15 = 219.0 ± 1.4 J·mol-1·K-1, S298.15 = 272.0 ± 4.9 J·mol-1·K-1, and ΔH0298.15 = 38.36 ± 0.37 kJ·mol-1.
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Institute of Problems of Complex Development of Mineral Resources, Karaganda, 100019, Kazakhstan
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation
Buketov Karaganda University, Karaganda, 100026, Kazakhstan
Institute of Problems of Complex Development of Mineral Resources
Nikolaev Institute of Inorganic Chemistry
Buketov Karaganda University
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