Mixed conductivity and oxygen permeability of (BaxSr 1-x) 0.98Fe1-yMyO 3-δ(x = 0.1-0.3, y = 0.1-0.4 and M = Ga, Al)

Kang Chun Yong, Hajime Kusaba, Hisahiro Einaga, Yasutake Teraoka

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Substitution effects of Ga and Al for Fe in (BaxSr 1-x)0.98FeO3-δ were studied with respect to crystal structure, conductivity and oxygen permeability. The solubility limits of Ga and Al in (BaxSr1-x)0.98Fe 1-yMyO3-δ (M=Ga, Al) were between 20 and 30 mol%. The substitution of Ga and Al caused decreases in electronic and oxide ionic conductivities (mixed conductivities) but tolerance toward enhanced the tolerance reduction. Sintered membranes of the Ga- and Al-substituted oxides showed oxygen permeability under the He/air oxygen partial pressure gradient and were stable under the condition of methane partial oxidation at 900°C.

Original languageEnglish
Title of host publicationSolid-State Ionics-2006
Number of pages6
Publication statusPublished - 2007
Event2006 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 27 2006Dec 1 2006

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2006 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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