The heat capacity of nitrogen chain in grooves of single-walled carbon nanotube bundles

• Veröffentlicht in: Физика низких температур
• Datum: 2013
• Hauptverfasser: Bagatskii, M.I., Barabashko, M.S., Sumarokov, V.V.
• Format: Artikel
• Sprache: English
• Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2013
• Schlagworte: 9th International Conference on Cryocrystals and Quantum Crystals
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/118457
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: The heat capacity of nitrogen chain in grooves of single-walled carbon nanotube bundles / M.I. Bagatskii, M.S. Barabashko, V.V. Sumarokov // Физика низких температур. — 2013. — Т. 39, № 5. — С. 568–573. — Бібліогр.: 65 назв. — англ.

The heat capacity of bundles of closed-cap single-walled carbon nanotubes with one-dimensional chains of nitrogen molecules adsorbed in the grooves has been first experimentally studied at temperatures from 2 to 40 K using an adiabatic calorimeter. The contribution of nitrogen CN₂ to the total heat capacity has been separated. In the region 28 K the behavior of the curve CN₂(T) is qualitatively similar to the theoretical prediction of the phonon heat capacity of 1D chains of Kr atoms localized in the grooves of SWNT bundles. Below 3 K the de-pendence CN₂(Т) is linear. Above 8 K the dependence CN₂(Т) becomes steeper in comparison with the case of Kr atoms. This behavior of the heat capacity CN₂(Т) is due to the contribution of the rotational degrees of free-dom of the N₂ molecules.