Electrophysical properties and structural features of shungite (natural nanostructured carbon)

Abstract

This paper presents the results of investigations of the electrical conductive properties with a nanoscale locality at nanoampere currents and the results of an analysis of the correlation between the electrical conductivity and structural features of natural glassy carbon, i.e., shungite. The investigations have been performed using atomic force microscopy, electric force spectroscopy, scanning spreading resistance microscopy, X-ray spectroscopic analysis, and Raman spectroscopy. It has been found that there are differences in electrical conductive properties of the structurally similar shungite samples formed under different PT conditions. Based on the analysis of the structural parameters and specific features of the shungite compositions, it has been shown that the effect of intercalation of impurities into boundary layers of graphene sheets has the most significant influence on the electrical and physical properties of the shungites. The differences in types and values of conductivity of the shungite samples are determined by the different degrees of intercalation.

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Correspondence to E. A. Golubev.

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Original Russian Text © E.A. Golubev, 2013, published in Fizika Tverdogo Tela, 2013, Vol. 55, No. 5, pp. 995–1002.

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Golubev, E.A. Electrophysical properties and structural features of shungite (natural nanostructured carbon). Phys. Solid State 55, 1078–1086 (2013). https://doi.org/10.1134/S1063783413050107

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Keywords

  • Fullerene
  • Glassy Carbon
  • Graphene Sheet
  • Graphene Layer
  • Carbon Matrix