The Low-Temperature Specific Heat of MWCNTs | Sciact - CRIS-система Института катализа

The Low-Temperature Specific Heat of MWCNTs Научная публикация

Конференция

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

Журнал

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

Вых. Данные

Год: 2019, Том: 45, Номер: 3, Страницы: 347-354 Страниц : 8 DOI: 10.1063/1.5090094

Ключевые слова

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

Авторы

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

Организации

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

Информация о финансировании (1)

Министерство образования и науки Российской Федерации

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 CAPlus 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

Полный текст от издателя

Поступила в редакцию:	23 янв. 2019 г.
Опубликована online:	12 февр. 2019 г.
Опубликована в печати:	1 мар. 2019 г.

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

БД	Цитирований
Web of science	14
Scopus	14
РИНЦ	12
OpenAlex	18