Physics of the Solid State

, Volume 40, Issue 7, pp 1190–1192

Low-temperature electrical conductivity of congruent lithium niobate crystals

  • I. Sh. Akhmadullin
  • V. A. Golenishchev-Kutuzov
  • S. A. Migachev
  • S. P. Mironov
Magnetism and Ferroelectricity

Abstract

The electrical conductivity of lithium niobate crystals was investigated at temperatures between 80 and 450 K as a function of the oxidation-reduction annealing conditions. The results are interpreted in terms of polaron electrical conductivity at room temperature and above. A reduction in the measurement temperature leads to “freezing out” of small-radius polarons, and hopping of Heitler-London bipolarons via unfilled NbLi sites becomes the main mechanism responsible for the electrical conductivity.

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Copyright information

© American Institute of Physics 1998

Authors and Affiliations

  • I. Sh. Akhmadullin
    • 1
  • V. A. Golenishchev-Kutuzov
    • 1
  • S. A. Migachev
    • 1
  • S. P. Mironov
    • 1
  1. 1.Kazan Physicotechnical InstituteRussian Academy of SciencesKazanRussia

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