Slow relaxation kinetics of Sr(Zr, Y)O3 in wet atmosphere

Takao Kudo, Keiji Yashiro, Hiroshige Matsumoto, Kazuhisa Sato, Tatsuya Kawada, Junichiro Mizusaki

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)


    The electrical conductivity of SrZr0.9Y0.1O3 - δ was measured as a function of temperature and gas partial pressure. Extremely slow conductivity relaxation was observed below 973 K. This is attributed to slow water incorporation/evolution reaction. Unexpectedly, measured electrical conductivities increased with decrease in temperature at temperatures lower than 1023 K. Proton and oxide ion conductivities were deconvoluted from the total conductivity by simple defect-chemical analysis. At low temperatures, the actual proton conductivity was found to be several times higher than those reported.

    Original languageEnglish
    Pages (from-to)851-854
    Number of pages4
    JournalSolid State Ionics
    Issue number21-26
    Publication statusPublished - Sept 15 2008

    All Science Journal Classification (ASJC) codes

    • Electrochemistry
    • Physical and Theoretical Chemistry
    • Energy Engineering and Power Technology
    • Materials Chemistry
    • Condensed Matter Physics


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