The oxygen permeation characteristics of Bi1 - xSrxFeO3 mixed ionic and electronic conducting ceramics

K. Brinkman, T. Iijima, H. Takamura

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

The perovskite oxides in the system Bi1 - xSrxFeO3 - δ (x = 0.05, 0.15, 0.3, 0.6, and 0.8) were characterized in the intermediate temperature range (650 to 800 °C) by oxygen permeation and electrical conductivity measurements. The samples exhibited a single phase perovskite structure with a decreasing lattice constant with increasing Sr concentration and a structural change from rhombohedral to cubic at x ≥ 0.3. Mixed conductivity was confirmed in all samples with maximum flux levels on the order of 0.11 μmol/cm2 s at 800 °C for the x = 0.8 composition. Materials studied displayed p-type conductivity over the oxygen partial pressure range present in permeation measurements (0.21 to 10- 6 atm). A local maximum of oxygen flux and ionic conductivity was found near x = 0.3.

Original languageEnglish
Pages (from-to)53-58
Number of pages6
JournalSolid State Ionics
Volume181
Issue number1-2
DOIs
Publication statusPublished - 2010 Feb 8

Keywords

  • Conductivity
  • Mixed conducting oxide
  • Oxygen permeation

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'The oxygen permeation characteristics of Bi<sub>1 - x</sub>Sr<sub>x</sub>FeO<sub>3</sub> mixed ionic and electronic conducting ceramics'. Together they form a unique fingerprint.

Cite this