Abstract
The heat capacity C 0p of (TeO2)n(ZnO)1 − n (n = 0.65, 0.70, 0.80) tellurite glasses has been determined by precision adiabatic (6–350 K) and dynamic scanning (320–650 K) calorimetry. The thermodynamic characteristics of their devitrification and glassy state have been determined. The experimental data have been used to calculate the standard thermodynamic functions of samples in the glassy and “supercooled liquid” states (0–650 K): heat capacity C 0p (T), enthalpy H 0(T) − H 0(0), entropy S 0(T) − S 0(0), and Gibbs function G 0(T) − H 0(0). Multifractal processing of the low-temperature heat capacity data has been used to assess the character of structural heterodynamicity of the tellurite glasses. The heat capacity of the glasses has been analyzed in comparison with that of their constituent oxides. The composition dependences of the glass transition temperature, crystallization onset temperature, and thermodynamic functions at 298.15 and 600 K have been obtained.
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Original Russian Text © N.N. Smirnova, A.V. Markin, K.V. Kandeev, M.F. Churbanov, I.A. Grishin, 2006, published in Neorganicheskie Materialy, 2006, Vol. 42, No. 4, pp. 502–510.
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Smirnova, N.N., Markin, A.V., Kandeev, K.V. et al. Thermodynamic properties of TeO2-ZnO glasses in the range 0–650 K. Inorg Mater 42, 448–455 (2006). https://doi.org/10.1134/S0020168506040200
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DOI: https://doi.org/10.1134/S0020168506040200