Oxygen-ion and electron conductivity in Sr2(Fe1-xGax)2 O5

I. A. Leonidov, M. V. Patrakeev, J. A. Bahteeva, K. V. Poholok, D. S. Filimonov, Kenneth R Poeppelmeier, V. L. Kozhevnikov

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

High-temperature electrical conductivity measurements, structural data from powder X-ray diffraction and 57Fe Mössbauer spectroscopy were combined to study the interrelationship of oxygen ion transport and p- and n-type transport in Sr2(Fe1-xGax)2O 5, where x = 0, 0.1 and 0.2. Although gallium substitution generally decreases the total ion-electron transport, the transition of the orthorhombic brownmillerite structure to a cubic phase on heating results in the recurrence of the conductivity to the same high level as in the parent ferrite (x = 0). The changes of the partial contributions to the total conductivity as a function of x are shown to reflect a complicated interplay of the disordering processes that develop in the oxygen sublattice on heating in response to replacement of iron with gallium.

Original languageEnglish
Pages (from-to)3045-3051
Number of pages7
JournalJournal of Solid State Chemistry
Volume179
Issue number10
DOIs
Publication statusPublished - Oct 2006

Fingerprint

Gallium
oxygen ions
gallium
Ions
Oxygen
Heating
conductivity
heating
Electrons
X ray powder diffraction
sublattices
Ferrite
ferrites
electrons
Substitution reactions
Iron
Spectroscopy
substitutes
iron
electrical resistivity

Keywords

  • Electrical conductivity
  • Mössbauer spectroscopy
  • Strontium ferrite

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Leonidov, I. A., Patrakeev, M. V., Bahteeva, J. A., Poholok, K. V., Filimonov, D. S., Poeppelmeier, K. R., & Kozhevnikov, V. L. (2006). Oxygen-ion and electron conductivity in Sr2(Fe1-xGax)2 O5 Journal of Solid State Chemistry, 179(10), 3045-3051. https://doi.org/10.1016/j.jssc.2006.05.028

Oxygen-ion and electron conductivity in Sr2(Fe1-xGax)2 O5 . / Leonidov, I. A.; Patrakeev, M. V.; Bahteeva, J. A.; Poholok, K. V.; Filimonov, D. S.; Poeppelmeier, Kenneth R; Kozhevnikov, V. L.

In: Journal of Solid State Chemistry, Vol. 179, No. 10, 10.2006, p. 3045-3051.

Research output: Contribution to journalArticle

Leonidov, IA, Patrakeev, MV, Bahteeva, JA, Poholok, KV, Filimonov, DS, Poeppelmeier, KR & Kozhevnikov, VL 2006, 'Oxygen-ion and electron conductivity in Sr2(Fe1-xGax)2 O5 ', Journal of Solid State Chemistry, vol. 179, no. 10, pp. 3045-3051. https://doi.org/10.1016/j.jssc.2006.05.028
Leonidov IA, Patrakeev MV, Bahteeva JA, Poholok KV, Filimonov DS, Poeppelmeier KR et al. Oxygen-ion and electron conductivity in Sr2(Fe1-xGax)2 O5 Journal of Solid State Chemistry. 2006 Oct;179(10):3045-3051. https://doi.org/10.1016/j.jssc.2006.05.028
Leonidov, I. A. ; Patrakeev, M. V. ; Bahteeva, J. A. ; Poholok, K. V. ; Filimonov, D. S. ; Poeppelmeier, Kenneth R ; Kozhevnikov, V. L. / Oxygen-ion and electron conductivity in Sr2(Fe1-xGax)2 O5 In: Journal of Solid State Chemistry. 2006 ; Vol. 179, No. 10. pp. 3045-3051.
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