Conductivity study of dense BaZr0.9Y0.1O(3 − δ) obtained by spark plasma sintering

Sandrine Ricote, Nikolaos Bonanos, Hsiang-Jen Wang, B.A. Boukamp

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    10% yttrium doped barium zirconate (BZY10) was synthesized by solid state reaction and a 99.8% dense and transparent sample was prepared by spark plasma sintering (SPS) at 1700 °C for 5 minutes. A single phase compound was obtained, with no evaporation of barium. High-Resolution Transmission Electron Microscopy (HRTEM) images revealed a distinct grain boundary across two grains, confirming no secondary phase formation along grain boundaries. The conductivity was determined as a function of temperature, at two different water vapor pressures, as well as in the D2O vapor exchanged state. The activation energy corresponding to protonic conduction has been determined, and compared to values from literature. The decrease in activation energy with increasing lattice parameters is confirmed. Furthermore, the effective space charge layer width has been estimated at 1.2–1.3 nm.
    Original languageEnglish
    JournalSolid State Ionics
    Volume213
    Pages (from-to)36-41
    ISSN0167-2738
    DOIs
    Publication statusPublished - 2012
    Event15th International Conference on Solid State Protonic Conductors - Santa Barbara, CA, United States
    Duration: 15 Aug 201019 Aug 2010

    Conference

    Conference15th International Conference on Solid State Protonic Conductors
    CountryUnited States
    CitySanta Barbara, CA
    Period15/08/201019/08/2010

    Keywords

    • Membranes

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