2013/03/04 by M. I. Bagatskiı̆, M. I. Bagatskii, M. S. Barabashko +7 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Phase Equilibria and Thermodynamics #Thermal properties of materials #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.1303.0757
7 pages, 7 figures
arxiv created 2013/03/04 · openalex publication_date 2013/03/04 · arxiv updated 2013/03/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The specific heat at constant pressure of bundles of single-walled carbon nanotubes closed at their ends has been investigated in a temperature interval of 2-120 K. It is found that the curve of heat capacity has features near 5, 36, 80, and 100 K. The experimental results on the heat capacity and the radial thermal expansion coefficient of bundles of SWNTs oriented perpendicular to the sample axis have been compared. It is found that the curves of the heat capacity and the radial thermal expansion coefficient exhibit a similar temperature behavior above 10 K. The temperature dependence of the Gruneisen coefficient has been calculated. The curve of the Gruneisen coefficient also has a feature near 36 K. Above 36 K the Gruneisen coefficient is practically independent of temperature. Below 36 K the Gruneisen coefficient decreases monotonically with lowering temperature and becomes negative below 6 K.