A. Tyurin, K. Gavrichev, L. N. Golushina
Nov 1, 2005
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Journal
Inorganic Materials
Abstract
The heat capacity of Ga2Se3 is measured from 14 to 320 K by adiabatic calorimetry. The smoothed heat capacity data are used to evaluate temperature-dependent thermodynamic functions (entropy, enthalpy increment, and reduced Gibbs energy) of gallium selenide. Under standard conditions, the thermodynamic properties of Ga2Se3 are Cp0 (298.15 K) = 120.8 ± 0.2 J/(K mol), S0(298.15 K) = 180.4 ± 0.4 J/(K mol), H0(298.15 K) - H0(0) = 25.32 ± 0.05 kJ/mol, and Φ0(298.15 K) = 95.52 ± 0.19 J/(K mol). The Debye characteristic temperature of Ga2Se3 evaluated from heat capacity data is 340 ± 10 K.