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The Heat Capacity of Solid CF 4
Author(s) -
Bagatskii M. I.,
Manzhelii V. G.,
Popov V. A.
Publication year - 1970
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19700370108
Subject(s) - heat capacity , thermodynamics , logarithm , atmospheric temperature range , function (biology) , molecule , phase (matter) , volumetric heat capacity , materials science , excess heat , specific heat , character (mathematics) , chemistry , heat transfer , physics , organic chemistry , heat flux , mathematics , mathematical analysis , geometry , evolutionary biology , biology
The heat capacity of solid tetrafluoromethane has been measured in the temperature range 2 to 20 °K. The analysis of the results of this paper and literature data on the heat capacity allow to make conclusions about the character of the heat motion of the molecules in crystalline CF 4 . An “extra” heat capacity of CF 4 near the phase transformation temperature T λ = 76.09 °K is due to orientational disordering. The temperature dependence of the “extra” heat capacity Δ C or is well described by the logarithmic function Δ C or ∼ lg ∼|– T | T λ|.