High-temperature ion transport in La1-xSrxFeO 3-δ

Julia A. Bahteeva, Ilia A. Leonidov, Mikhail V. Patrakeev, Edward B. Mitberg, Victor L. Kozhevnikov, Kenneth R. Poeppelmeier

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The conductivity of the entire solid solution La1-xSr xFeO3-δ, where x = 0.2, 0.4, 0.5, 0.7 and 0.9, in the oxygen partial pressure range 10-19 to 0.5 atm and temperatures between 750 and 950°C is reported. The analysis of the isothermal pressure dependences of the conductivity reveal that the lanthanum-strontium ferrites can be characterized as mixed ion-electron conductors in the low-oxygen pressure/high-oxygen deficiency limit. The partial contribution to conductivity from oxygen ions increases with strontium content and attains a maximal value at x = 0.5. Further increase in doping results in the development of oxygen vacancy ordering phenomena and deterioration of the conducting properties.

Original languageEnglish
Pages (from-to)578-584
Number of pages7
JournalJournal of Solid State Electrochemistry
Volume8
Issue number9
Publication statusPublished - Aug 2004

Fingerprint

Ions
Oxygen
strontium
conductivity
Strontium
high pressure oxygen
ions
hypoxia
oxygen
oxygen ions
deterioration
lanthanum
Lanthanum
Temperature
pressure dependence
partial pressure
ferrites
Ferrites
solid solutions
Oxygen vacancies

Keywords

  • Electron conductivity
  • Lanthanum-strontium ferrite
  • Oxygen conductivity
  • Oxygen-vacancy ordering

ASJC Scopus subject areas

  • Electrochemistry

Cite this

Bahteeva, J. A., Leonidov, I. A., Patrakeev, M. V., Mitberg, E. B., Kozhevnikov, V. L., & Poeppelmeier, K. R. (2004). High-temperature ion transport in La1-xSrxFeO 3-δ Journal of Solid State Electrochemistry, 8(9), 578-584.

High-temperature ion transport in La1-xSrxFeO 3-δ . / Bahteeva, Julia A.; Leonidov, Ilia A.; Patrakeev, Mikhail V.; Mitberg, Edward B.; Kozhevnikov, Victor L.; Poeppelmeier, Kenneth R.

In: Journal of Solid State Electrochemistry, Vol. 8, No. 9, 08.2004, p. 578-584.

Research output: Contribution to journalArticle

Bahteeva, JA, Leonidov, IA, Patrakeev, MV, Mitberg, EB, Kozhevnikov, VL & Poeppelmeier, KR 2004, 'High-temperature ion transport in La1-xSrxFeO 3-δ ', Journal of Solid State Electrochemistry, vol. 8, no. 9, pp. 578-584.
Bahteeva JA, Leonidov IA, Patrakeev MV, Mitberg EB, Kozhevnikov VL, Poeppelmeier KR. High-temperature ion transport in La1-xSrxFeO 3-δ Journal of Solid State Electrochemistry. 2004 Aug;8(9):578-584.
Bahteeva, Julia A. ; Leonidov, Ilia A. ; Patrakeev, Mikhail V. ; Mitberg, Edward B. ; Kozhevnikov, Victor L. ; Poeppelmeier, Kenneth R. / High-temperature ion transport in La1-xSrxFeO 3-δ In: Journal of Solid State Electrochemistry. 2004 ; Vol. 8, No. 9. pp. 578-584.
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