Analysis of electric properties of ZrO2-Y2O 3 single crystals using teraherz IR and impedance spectroscopy techniques

V. G. Artemov, I. E. Kuritsyna, S. P. Lebedev, G. A. Komandin, P. O. Kapralov, I. E. Spektor, V. V. Kharton, S. I. Bredikhin, A. A. Volkov

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The data obtained by impedance spectroscopy (1 Hz to 32 MHz) and broad-band dielectric spectroscopy (30 GHz-150 THz) are presented for crystals based on zirconia doped by 1.5-30 mol % Y2O3 or 10 mol % Sc 2O3 and 1 mol % Y2O3. The maximum of ionic conductivity is confirmed for the latter composition in the working temperature range of solid oxide fuel cells where the doping by scandium and yttrium oxides makes it possible to obtain isotropic single crystals. Dependences of dielectric permeability and high-frequency conductivity of materials on the composition of crystals and temperature are presented.

Original languageEnglish
Pages (from-to)690-693
Number of pages4
JournalRussian Journal of Electrochemistry
Volume50
Issue number7
DOIs
Publication statusPublished - Jul 2014
Externally publishedYes

Keywords

  • broad-band dielectric spectroscopy
  • conductivity
  • dielectric permeability
  • impedance spectroscopy
  • single crystals of stabilized zirconia

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