Abstract
The influence of various gaseous media on the temperature dependence of the electric conductivity σ of multiwalled carbon nanotubes (MWNTs) synthesized using the method of catalytical chemical vapor deposition (CVD) has been studied. The σ(T) curves were measured in a temperature range from 4.2 to 300 K in helium and its mixtures with air, methane, oxygen, and hydrogen. The introduction of various gaseous components into a helium atmosphere leads to a significant decrease in the conductivity of MWNTs in the interval between the temperatures of condensation and melting of the corresponding gas. Upon a heating-cooling cycle, the conductivity restores on the initial level. It is concluded that a decrease in σ is caused by the adsorption of gases on the surface of nanotubes.
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Original Russian Text © T.I. Buryakov, A.I. Romanenko, O.B. Anikeeva, V.L. Kuznetsov, A.N. Usol’tseva, E.N. Tkachev, 2007, published in Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2007, Vol. 132, No. 1, pp. 178–182.
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Buryakov, T.I., Romanenko, A.I., Anikeeva, O.B. et al. Effect of gases on the temperature dependence of the electric conductivity of CVD multiwalled carbon nanotubes. J. Exp. Theor. Phys. 105, 155–159 (2007). https://doi.org/10.1134/S1063776107070345
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DOI: https://doi.org/10.1134/S1063776107070345