Article

Arhive, 2006, № 6

Thermophysical Properties of Materials

2006. V. 44. № 6. P. 843–851

Pavlova L.M., Pashinkin A.S., Gaev D.S., Pak A.S.

The heat capacity of cadmium telluride at medium and high temperatures

The modified Schomeit method for processing enthalpies $(H_T^0-H^0_{298.15})$ is suggested, which provides for agreement between high-temperature data on $C_p$ both with a reliably measured value of $C^0_{p,298.15}$, and with derivative ${\bigl(\frac{\partial C^0_p}{\partial T}\bigr)}_{298.15}$. The latter gives a "smoother" joining of dependences $C_p(T)$ obtained experimentally with different accuracy. The suggested procedure is applied to analysis of experimentally obtained distributions of heat capacity of cadmium telluride as a function of temperature, and a new approximating equation is obtained for the most reliable data in the range from $298$ K to the melting point of $\mathrm{CdTe}$. This procedure is compared to other known methods of simultaneous processing of $C_p(T)$ data. It is demonstrated that the values of heat capacity of $\mathrm{CdTe}$ recommended by us agree with reliably determined coefficients of thermal expansion (CTE) of this compound. The characteristic Debye temperature of cadmium telluride is estimated in a wide temperature range, and the pattern of its variation with temperature is analyzed.

Article reference:
Pavlova L.M., Pashinkin A.S., Gaev D.S., Pak A.S. The heat capacity of cadmium telluride at medium and high temperatures, High Temp., 2006. V. 44. № 6. P. 843