Crystallography Reports

, Volume 62, Issue 5, pp 758–762 | Cite as

Evolution of the vanadium pentoxide V2O5 crystal surface after vacuum annealing

  • A. E. Muslimov
  • A. V. Butashin
  • R. G. Valeev
  • S. N. Sulyanov
  • A. N. Beltiukov
  • A. B. Kolymagin
  • V. A. Babaev
  • V. M. Kanevsky
Surface, Thin Films
  • 36 Downloads

Abstract

A complex study of the (001) cleavage surface of a V2O5 single crystal annealed in vacuum at 450 and 550°C has been performed. Tunnel microscopy of the sample surface annealed in vacuum at 550°C showed the formation of a plane with a corundum structure, reconstructed according to the V2O3 (0001)-(1/√3 × 1/√3)R30° type, on the surface. X-ray photoelectron spectroscopy revealed a significant modification of interatomic bonds in the surface layers of V2O5 single crystal after vacuum annealing at 550°C, which is related to the partial reduction of V5+ ions and formation of lower vanadium oxides. These modifications lead to a decrease in the electrical resistivity of V2O5 and the occurrence of bending at a temperature of 61.5°С in the temperature dependence of the sample resistance, which is indicative of phase transition.

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Copyright information

© Pleiades Publishing, Inc. 2017

Authors and Affiliations

  • A. E. Muslimov
    • 1
  • A. V. Butashin
    • 1
  • R. G. Valeev
    • 2
  • S. N. Sulyanov
    • 1
    • 3
  • A. N. Beltiukov
    • 2
  • A. B. Kolymagin
    • 1
  • V. A. Babaev
    • 4
  • V. M. Kanevsky
    • 1
  1. 1.Shubnikov Institute of Crystallography, Federal Research Centre “Crystallography and Photonics,”Russian Academy of SciencesMoscowRussia
  2. 2.Physical-Technical InstituteRussian Academy of Sciences, Ural BranchIzhevskRussia
  3. 3.National Research Center “Kurchatov Institute”MoscowRussia
  4. 4.Dagestan State UniversityMakhachkalaRussia

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