Radial thermal expansion of single-walled carbon nanotube bundles at low temperatures

Автор(и)

  • A.V. Dolbin B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • V.B. Esel`son B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • V.G. Gavrilko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • V.G. Manzhelii B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • N.A. Vinnikov B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • S.N. Popov B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • B. Sundqvist Department of Physics, Umea University, SE - 901 87 Umea, Sweden

DOI:

https://doi.org/10.1063/1.2967518

Ключові слова:

radial thermal expansion, single-walled carbon nanotube.

Анотація

For the first time the linear coefficient of the radial thermal expansion has been measured on a system of SWNT bundles at low temperatures (2.2–120 K). The measurements were performed using a dilatometer with a sensitivity of 2·10–9 cm. The cylindrical sample 7 mm high and 10 mm in diameter was obtained by compressing powder. The resulting bundles of the nanotubes were oriented perpendicular to the sample axis. The starting powder contained over 90% of SWNTs with the outer diameter 1.1 nm, the length varying within 5–30 mm. The change of sign of the radial thermal expansion coefficient at 5.5 K was observed.

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Опубліковано

2008-07-03

Як цитувати

(1)
Dolbin, A.; Esel`son, V.; Gavrilko, V.; Manzhelii, V.; Vinnikov, N.; Popov, S.; Sundqvist, B. Radial Thermal Expansion of Single-Walled Carbon Nanotube Bundles at Low Temperatures. Fiz. Nizk. Temp. 2008, 34, 860-862.

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