The Low-Temperature Specific Heat of MWCNTs | Sciact - CRIS-system of Boreskov Institute of Catalysis

The Low-Temperature Specific Heat of MWCNTs Full article

Conference

12th International Conference on Cryocrystals and Quantum Crystals (CC)
26-31 Aug 2018 , Wroclaw

Journal

Low Temperature Physics
ISSN: 1063-777X , E-ISSN: 1090-6517

Output data

Year: 2019, Volume: 45, Number: 3, Pages: 347-354 Pages count : 8 DOI: 10.1063/1.5090094

Tags

MULTIWALLED CARBON NANOTUBES; DENSITY-OF-STATES; CAPACITY; GRAPHITE; GROOVES; ACTIVATION; DIAMOND; CHAINS

Authors

Sumarokov V.V. ¹ , Jeżowski A. ² , Szewczyk D. ² , Bagatski M.I. ¹ , Barabashko M.S. ^1,3 , Ponomarev A.N. ⁴ , Kuznetsov V.L. ^5,6 , Moseenkov S.I. ⁵

Affiliations

1	B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Nauky Ave., Kharkiv 61103, Ukraine
2	W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, Wroclaw 50–950, Poland
3	National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk 634050, Russia
4	Institute of Strength Physics and Materials Science of SB RAS, 2/4 Academicheskii Ave., Tomsk 634055, Russia
5	Boreskov Institute of Catalysis, 5 Lavrentiev Ave., Novosibirsk 630090, Russia
6	National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia

Funding (1)

The Ministry of Education and Science of the Russian Federation

The specific heat of multi-walled carbon nanotubes (MWCNTs) with a low defectiveness and with a low content of inorganic impurities has been measured in the temperature range from 1.8 to 275 K by the thermal relaxation method. The elemental composition and morphology of the MWCNTs were determined using scanning electron microscopy analysis and energy dispersion x-ray spectroscopy. The MWCNTs were prepared by chemical catalytic vapor deposition and have mean diameters from 7 nm up to 18 nm and lengths in some tens of microns. MWCNTs purity is over 99.4 at.%. The mass of the samples ranged from 2–4 mg. It was found that the temperature dependence of the specific heat of the MWCNTs differs significantly from other carbon materials (graphene, bundles of SWCNTs, graphite, diamond) at low temperatures. The specific heat of MWCNTs systematically decreases with increasing diameter of the tubes at low temperatures. The character of the temperature dependence of the specific heat of the MWCNTs with different diameters demonstrates the manifestation of different dimensions from 1D to 3D, depending on the temperature regions. The crossover temperatures are about 6 and 40 K. In the vicinity of these temperatures, a hysteresis is observed.

Sumarokov V.V. , Jeżowski A. , Szewczyk D. , Bagatski M.I. , Barabashko M.S. , Ponomarev A.N. , Kuznetsov V.L. , Moseenkov S.I.
The Low-Temperature Specific Heat of MWCNTs

Low Temperature Physics. 2019. V.45. N3. P.347-354. DOI: 10.1063/1.5090094 WOS Scopus РИНЦ AN OpenAlex

Sumarokov V.V. , Jeżowski A. , Szewczyk D. , Bagatski M.I. , Barabashko M.S. , Ponomarev A.N. , Kuznetsov V.L. , Moseenkov S.I.
The Low-Temperature Specific Heat of MWCNTs
Физика низких температур. 2019. V.45. N3. P.395–403. RSCI Scopus РИНЦ

Full text from publisher

Submitted:	Jan 23, 2019
Published online:	Feb 12, 2019
Published print:	Mar 1, 2019

Web of science:	WOS:000458510500018
Scopus:	2-s2.0-85061629273
Elibrary:	38669448
Chemical Abstracts:	2019:315237
OpenAlex:	W2912167244

DB	Citing
Web of science	13
Scopus	13
Elibrary	12
OpenAlex	17