Contribution of the 1st kind phase transition smearing due to impurities to heat capacity of condensed systems

M.I.Bagatsky


Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin Ave., 310164 Kharkiv, Ukraine

Received March 20, 1998

An expression describing the contribution of the 1st kind phase transition smearing due to impurities to heat capacity of condensed systems has been derived under a simple model approximation (weak binary solutions, equilibrium distribution of impurities). The model proposed has been observed to agree qualitatively with experimental data for phase transitions in simple molecular crystals (CF4, CCl4 - crystal-crystal transitions) and in liquid crystals (L) (MBBA, BMOAB - nematic LC-isotropic liquid transitions).

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