Characterization, electrical conduction and stability of Yb-doped barium cerate prepared by sol-gel method

N. Osman, I. A. Talib, H. A. Hamid, A. M. Jani

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    Ceramics powder of BaCe0.95Yb0.05O2.975 was successfully prepared by sol-gel method. Thermogravimetric analysis showed that the decomposition of the dried powder was completed at 1,000 °C. Three strongly exothermic peaks observed in differential thermogravimetric signal indicated three major stages of weight loss in the sample. The high crystallinity of sample with orthorhombic structure was confirmed by X-ray diffraction. The loose particles size obtained from scanning electron microscope was in the range of 65-100 nm, which is almost in the same range as that observed in particle size distribution. The sample showed a dc conductivity of ~1.3∈×∈10-4 S cm-1 at 650 °C and the activation energy, E a, was found to be 1.4 eV. Result of chemical stability test showed that the compound was unstable in atmosphere containing pure carbon dioxide.

    Original languageEnglish
    Pages (from-to)407-413
    Number of pages7
    JournalIonics
    Volume14
    Issue number5
    DOIs
    Publication statusPublished - Sep 2008

    Fingerprint

    Barium
    Powders
    Sol-gel process
    barium
    gels
    conduction
    Chemical stability
    Carbon Dioxide
    Particle size analysis
    Thermogravimetric analysis
    stability tests
    Carbon dioxide
    Electron microscopes
    Activation energy
    Particle size
    Decomposition
    Scanning
    particle size distribution
    X ray diffraction
    carbon dioxide

    Keywords

    • Ceramic perovskite
    • Chemical stability
    • Single-phase
    • Sol-gel

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Chemical Engineering(all)
    • Materials Chemistry

    Cite this

    Characterization, electrical conduction and stability of Yb-doped barium cerate prepared by sol-gel method. / Osman, N.; Talib, I. A.; Hamid, H. A.; Jani, A. M.

    In: Ionics, Vol. 14, No. 5, 09.2008, p. 407-413.

    Research output: Contribution to journalArticle

    Osman, N. ; Talib, I. A. ; Hamid, H. A. ; Jani, A. M. / Characterization, electrical conduction and stability of Yb-doped barium cerate prepared by sol-gel method. In: Ionics. 2008 ; Vol. 14, No. 5. pp. 407-413.
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