Low Temperature Physics: 35, 286 (2009); https://doi.org/10.1063/1.3115809 (4 pages)
Физика Низких Температур: Том 35, Выпуск 4 (Апрель 2009), c. 376-379    ( к оглавлению , назад )

Heat transfer in solid halogenated methanes: trifluoromethane

V.A. Konstantinov, V.P. Revyakin, and V.V. Sagan

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: konstantinov@ilt.kharkov.ua

Received January 29, 2009


The isochoric thermal conductivity of solid trifluoromethane was investigated for three samples of different densities in the interval from 75 K to the onset of melting. The isochoric thermal conductivity first decreases with increasing temperature, passes through a minimum at T ~ 100 K, and then starts to increase slowly. The results obtained are compared with the thermal conductivities of other freons of methane series. The correlation between the temperature dependence of isochoric thermal conductivity and the character of the rotational molecular motion is discussed.

PACS: 66.70.–f Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves;
PACS: 63.20.Kk Phonon interactions with other quasiparticles.

Key words: thermal conductivity, phonons, phonon-rotation coupling, diffusive modes.