Oxygen diffusion in nanocrystalline CeO2

L. Saraf, V. Shutthanandan, Chongmin Wang, Yanwen Zhang, O. Marina, S. Thevuthasan

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

    2 Citations (Scopus)

    Abstract

    In this study, 18O diffusion and related transport on 1-2 μm thick nanocrystalline ceria films prepared by sol-gel process with an average grain-size in the range of 3-38 nm are studied. Initial 18O diffusion results indicate increased diffusion in 6 nm average grain-size nano-ceria films compared to ∼38 nm average grain-size poly-ceria films. Conductivity values in the case of ∼ 3nm average grain size CeO2 films grown at 573 K observed to be marginally increased compared to ∼ 6 nm average grain size ceria films grown at 723 K. A detailed nano-grain analysis by high-resolution transmission electron microscopy (HRTEM) was carried out to understand the effect of nanocrystallinity on the blocking phenomena.

    Original languageEnglish
    Title of host publication2003 3rd IEEE Conference on Nanotechnology, IEEE-NANO 2003 - Proceedings
    PublisherIEEE Computer Society
    Pages477-479
    Number of pages3
    ISBN (Electronic)0780379764
    DOIs
    Publication statusPublished - 1 Jan 2003
    Event2003 3rd IEEE Conference on Nanotechnology, IEEE-NANO 2003 - San Francisco, United States
    Duration: 12 Aug 200314 Aug 2003

    Publication series

    NameProceedings of the IEEE Conference on Nanotechnology
    Volume2
    ISSN (Print)1944-9399
    ISSN (Electronic)1944-9380

    Other

    Other2003 3rd IEEE Conference on Nanotechnology, IEEE-NANO 2003
    CountryUnited States
    CitySan Francisco
    Period12/8/0314/8/03

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    Keywords

    • Alpha particles
    • Annealing
    • Cerium
    • Coatings
    • Conductive films
    • Grain size
    • Nuclear power generation
    • Oxygen
    • Temperature measurement
    • Transmission electron microscopy

    ASJC Scopus subject areas

    • Bioengineering
    • Electrical and Electronic Engineering
    • Materials Chemistry
    • Condensed Matter Physics

    Cite this

    Saraf, L., Shutthanandan, V., Wang, C., Zhang, Y., Marina, O., & Thevuthasan, S. (2003). Oxygen diffusion in nanocrystalline CeO2. In 2003 3rd IEEE Conference on Nanotechnology, IEEE-NANO 2003 - Proceedings (pp. 477-479). [1230949] (Proceedings of the IEEE Conference on Nanotechnology; Vol. 2). IEEE Computer Society. https://doi.org/10.1109/NANO.2003.1230949