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Radial thermal expansion of pure and Xe-saturated bundles of single-walled carbon nanotubes at low temperatures

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dc.contributor.author Dolbin, A.V.
dc.contributor.author Esel'son, V.B.
dc.contributor.author Gavrilko, V.G.
dc.contributor.author Manzhelii, V.G.
dc.contributor.author Popov, S.N.
dc.contributor.author Vinnikov, N.A.
dc.contributor.author Danilenko, N.I.
dc.contributor.author Sundqvist, B.
dc.date.accessioned 2017-05-21T16:26:56Z
dc.date.available 2017-05-21T16:26:56Z
dc.date.issued 2009
dc.identifier.citation Radial thermal expansion of pure and Xe-saturated bundles of single-walled carbon nanotubes at low temperatures / A.V. Dolbin, V.B. Esel'son, V.G. Gavrilko, V.G. Manzhelii, S.N. Popov, N.A.Vinnikov, N.I. Danilenko, B. Sundqvist // Физика низких температур. — 2009. — Т. 35, № 6. — С. 613-621. — Бібліогр.: 50 назв. — англ. uk_UA
dc.identifier.issn 0132-6414
dc.identifier.other PACS: 74.70.Wz
dc.identifier.uri http://dspace.nbuv.gov.ua/handle/123456789/117250
dc.description.abstract The radial thermal expansion coefficient ar of pure and Xe-saturated bundles of single-walled carbon nanotubes (CNT) has been measured in the interval 2.2-120 K. The coefficient is positive above T = 5.5 K and negative at lower temperatures. The experiment was made using a low-temperature capacitance dilatometer with a sensitivity of 2·10⁻⁹ cm and the sample was prepared by compacting a CNT powder such that the pressure applied oriented the nanotube axes perpendicular to the axis of the cylindrical sample. The data show that individual nanotubes have a negative thermal expansion while the solid compacted material has a positive expansion coefficient due to expansion of the intertube volume in the bundles. Doping the nanotubes with Xe caused a sharp increase in the magnitude of ar in the whole range of temperatures used, and a peak in the dependence ar(T) in the interval 50-65 K. A subsequent decrease in the Xe concentration lowered the peak considerably but had little effect on the thermal expansion coefficient of the sample outside the region of the peak. The features revealed have been explained qualitatively. uk_UA
dc.description.sponsorship We wish to thank Prof. V.M. Loktev for valuable discussion. The authors are indebted to the Science and Technology Center of Ukraine (STCU) for the financial support of this study (project No. 4266). uk_UA
dc.language.iso en uk_UA
dc.publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України uk_UA
dc.relation.ispartof Физика низких температур
dc.subject Наноструктуры при низких температурах uk_UA
dc.title Radial thermal expansion of pure and Xe-saturated bundles of single-walled carbon nanotubes at low temperatures uk_UA
dc.type Article uk_UA
dc.status published earlier uk_UA


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