Subject classification: 65.40.Ba; S8.13The heat capacity of ZnTe was measured in an adiabatic calorimeter in the temperature range from 15 to 330 K and by DSC at T = 290-925 K. The following standard thermodynamic properties of ZnTe were derived: C 0 p (298.15 K) = (49.52 AE 0.10) J K --1 mol --1 ; S 0 (298.15 K) = (81.94 AE 0.17) J K --1 mol --1 ;H 0 (298.15 K) --H 0 (0 K) = (10.98 AE 0.02) kJ mol --1 ; F 0 (298.15 K) = (45.12 AE 0.10) J K --1 mol --1 . Temperature dependences of the heat capacity and the Gibbs free energy function are derived for the temperature range up to 1500 K. The Debye temperature calculated from the specific heat data is Q D = 252 K.An ever-growing interest in cadmium-and zinc-telluride based semiconductors is associated with the application of these materials in X-ray, g-and IR-radiation detectors. Because of the high melting point, high vapor pressure and non-stoichiometry, crystal growth of these materials is a rather complicated procedure [1]. Fundamental thermodynamic properties, in particular heat capacity and Gibbs free energy, are the basis for computer modeling of crystallization, post-growth cooling and annealing parameters.The heat capacity of ZnTe has been measured earlier only at low temperatures: Demidenko and Maltsev [2] reported adiabatic calorimeter measurements from 55 to 300 K, and Irwin and LaCombe [3] used an adiabatic calorimeter with (Au + 0.03% Fe) vs. chromel thermocouples for specific heat measurements in the temperature range from 15 to 150 K; the latter results can be considered only as semi-quantitative.In this paper we report heat capacity measurements of ZnTe in a wide temperature range, 15 to 925 K, including the first experimental results at high temperatures.Crystalline ZnTe was prepared from high purity elements produced by NORANDA Co., Canada. The total impurity content was less than 1 ppm. The synthesis was carried out in a pumped and sealed quartz ampoule with vibrational homogenization. According to the XRD analysis, the sample was single phase with a cubic structure. Vapor pressure measurements at T > 800 K confirmed that the sample was within the homogeneity range of ZnTe.The heat capacity of ZnTe was measured in an adiabatic calorimeter at temperatures 15-327 K and by DSC at T = 290-950 K. Experimental results (84 points) are pre-1
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