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Ionics

, Volume 9, Issue 1–2, pp 67–70 | Cite as

High-temperature electrical transport in Al-doped calcium and strontium titanates

  • L. A. Dunyushkina
  • V. A. Gorbunov
  • A. A. Babkina
  • N. O. Esina
Article

Abstract

The electrical conductivity of perovskite-related oxides CaTi1−xAlxO3−δ and SrTi1−xAlxO3−δ (x=0−0.4) were investigated within the temperature range 900 to 1000 °C and the oxygen partial pressure range between 10−20 and 0.21 atm using a dc four-point technique. The materials investigated show predominantly p-type electronic conductivity at high, n-type electronic conductivity at low, and ionic conductivity at intermediate oxygen partial pressures. The values of ionic conductivity in CaTi1−xAlxO3−δ were found to be lower than those in CaTi1−xFexO3−δ. The effect of aluminium concentration on the high-temperature transport properties was examined.

Keywords

Electrical Conductivity Titanate Strontium Transport Property Ionic Conductivity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© IfI - Institute for Ionics 2003

Authors and Affiliations

  • L. A. Dunyushkina
    • 1
  • V. A. Gorbunov
    • 2
  • A. A. Babkina
    • 1
  • N. O. Esina
    • 1
  1. 1.Institute of High Temperature ElectrochemistryUral Division of Russian Academy of ScienceEkaterinburgRussia
  2. 2.Ural State UniversityEkaterinburgRussia

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