The specific heat and the radial thermal expansion of bundles of single-walled carbon nanotubes

M. I. Bagatskii, M. S. Barabashko, A. V. Dolbin, V. V. Sumarokov, B. Sundqvist

Результат исследований: Материалы для журналаСтатья

18 Цитирования (Scopus)

Выдержка

The specific heat at constant pressure C(T) of bundles of single-walled carbon nanotubes (SWNTs) closed at their ends has been investigated in a temperature interval of 2-120 K. It is found that the curve C(T) has features near 5, 36, 80, and 100 K. The experimental results on the C(T) and the radial thermal expansion coefficient aR(T) of bundles of SWNTs oriented perpendicular to the sample axis have been compared. It is found that the curves C(T) and aR(T) exhibit a similar temperature behavior at T > 10 K. The temperature dependence of the Grüneisen coefficient γ(T) has been calculated. The curve γ(T) also has a feature near 36 K. Above 36 K the Grüneisen coefficient is practically independent of temperature ( ̃ 4). Below 36 K γ(T) decreases monotonically with lowering temperature and becomes negative at T < 6 K.

Язык оригиналаАнглийский
Страницы (с-по)667-673
Число страниц7
ЖурналFizika Nizkikh Temperatur
Том38
Номер выпуска6
СостояниеОпубликовано - 1 июн 2012
Опубликовано для внешнего пользованияДа

Отпечаток

bundles
thermal expansion
carbon nanotubes
specific heat
curves
coefficients
temperature
intervals
temperature dependence

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Цитировать

Bagatskii, M. I., Barabashko, M. S., Dolbin, A. V., Sumarokov, V. V., & Sundqvist, B. (2012). The specific heat and the radial thermal expansion of bundles of single-walled carbon nanotubes. Fizika Nizkikh Temperatur, 38(6), 667-673.

The specific heat and the radial thermal expansion of bundles of single-walled carbon nanotubes. / Bagatskii, M. I.; Barabashko, M. S.; Dolbin, A. V.; Sumarokov, V. V.; Sundqvist, B.

В: Fizika Nizkikh Temperatur, Том 38, № 6, 01.06.2012, стр. 667-673.

Результат исследований: Материалы для журналаСтатья

Bagatskii, MI, Barabashko, MS, Dolbin, AV, Sumarokov, VV & Sundqvist, B 2012, 'The specific heat and the radial thermal expansion of bundles of single-walled carbon nanotubes', Fizika Nizkikh Temperatur, том. 38, № 6, стр. 667-673.
Bagatskii, M. I. ; Barabashko, M. S. ; Dolbin, A. V. ; Sumarokov, V. V. ; Sundqvist, B. / The specific heat and the radial thermal expansion of bundles of single-walled carbon nanotubes. В: Fizika Nizkikh Temperatur. 2012 ; Том 38, № 6. стр. 667-673.
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AU - Sumarokov, V. V.

AU - Sundqvist, B.

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AB - The specific heat at constant pressure C(T) of bundles of single-walled carbon nanotubes (SWNTs) closed at their ends has been investigated in a temperature interval of 2-120 K. It is found that the curve C(T) has features near 5, 36, 80, and 100 K. The experimental results on the C(T) and the radial thermal expansion coefficient aR(T) of bundles of SWNTs oriented perpendicular to the sample axis have been compared. It is found that the curves C(T) and aR(T) exhibit a similar temperature behavior at T > 10 K. The temperature dependence of the Grüneisen coefficient γ(T) has been calculated. The curve γ(T) also has a feature near 36 K. Above 36 K the Grüneisen coefficient is practically independent of temperature ( ̃ 4). Below 36 K γ(T) decreases monotonically with lowering temperature and becomes negative at T < 6 K.

KW - Grüneisen coefficient

KW - Heat capacity

KW - Single-walled carbon nanotubes

KW - SWNT bundles

KW - Thermal expansion coefficient

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