Abstract

RODRIGUEZ-MIJANGOS, R.; MOROYOQUI-ESTRELLA, G.; VAZQUEZ-POLO, G.  and  PEREZ-SALAS, R.. Propiedades térmicas de un cristal dieléctrico ternario a bajas temperaturas. Rev. mex. fis. [online]. 2005, vol.51, n.2, pp.149-152. ISSN 0035-001X.

Using simple arguments supported by basic principles of thermal physics we studied the behavior of heat capacity and Helmholtz free energy of ternary mixed alkali halide crystals. For heat capacity is considered the possibility of F centers contribution in colored samples making a simple calculus, finding that it is negligible. We showed the behavior at low temperatures of the Debye temperature versus the components concentration of mixed ternary crystal, with this temperature is obtained the heat capacity at any concentration of a mixed sample. Finally we consider the partition function strongly related with an average binding energy function of the components concentration, values of this energy are shown and starting with this information we obtain the Helmholtz free energy of the studied material.

Keywords : Thermal properties of solids; crystalline mixtures; statistical physics.

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