Isochoric thermal conductivity of solid furan

• Published in: Физика низких температур
• Date: 2013
• ISSN: 0132-6414
• Main Authors: Konstantinov, V.A., Sagan, V.V., Revyakin, V.P., Zvonaryova, A.V., Pursky, O.I.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2013
• Subjects: 9th International Conference on Cryocrystals and Quantum Crystals
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/118460
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Isochoric thermal conductivity of solid furan / V.A. Konstantinov, V.V. Sagan, V.P. Revyakin, A.V. Zvonaryova, O.I. Pursky // Физика низких температур. — 2013. — Т. 39, № 5. — С. 606–610. — Бібліогр.: 15 назв. — англ.

Thermal conductivity of solid furan has been measured at isochoric conditions in the high-temperature orien-tationally-disordered phase I for samples of different densities. Our isochoric data show a gradual increase of ΛV with temperature whereas isobaric thermal conductivity goes down in this temperature range. The above effect is most clearly expressed in furan, where the atoms in the ring plane are not equivalent, as compared with earlier studied C₆H₆ and C₆H₁₂. The increase of ΛV with temperature can be attributed to weakening of the translation-al-orientational interaction which, in turn, leads to a decrease of phonon scattering on rotational excitations. The experimental data are described in terms of a modified Debye model of thermal conductivity with allowance for heat transfer by both low-frequency phonons and ―diffuse‖ modes.