Oxygen transport in perovskite type oxide La0.6Sr 0.4Co0.2Fe0.8O3-δ

Honami Kudo, Keiji Yashiro, Shin Ichi Hashimoto, Koji Amezawa, Tatsuya Kawada, Junichiro Mizusaki

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

Abstract

Oxygen isotope diffusion coefficient, D*, of La0.6Sr 0.4Co0.2Fe0.8O3-δ (LSCF6428) was measured as a function of p(O2) and temperature. Vacancy diffusion coefficient, DV, was calculated from D* and reported values of oxygen nonstoichiometry, δ. There was little dependence of DV on δ or p(O2) while DV by conductivity relaxation method was reported to drastically decrease with decreasing p(O2) below 10-2 bar. The absolute values of DV in this study were about an order of magnitude larger than those by conductivity relaxation method.

Original languageEnglish
Title of host publicationECS Transactions
PublisherElectrochemical Society Inc.
Pages37-42
Number of pages6
Edition44
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2013

Publication series

NameECS Transactions
Number44
Volume50
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

ASJC Scopus subject areas

  • Engineering(all)

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