Electron energy loss spectroscopy study of cerium stabilised zirconia: An application of valence determination in rare earth systems

J. Yuan, T. Hirayama, Y. Ikuhara, T. Sakuma

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    We have used the electron energy loss spectroscopy to study the valence state of cerium and the lattice distortion in Ce doped ZrO2 ceramic from the fine structure in oxygen K-edge. We showed that the fine structure of Ce M4,5 absorption edges is an excellent signature of the Ce valence state in the samples. This procedure is compared with other means of valence determination, such as white line intensity and branch ratio. Through the knowledge of the cerium oxidation state, we obtained information about the charge-compensating point defect in the samples. This is correlated with the distortion in the local atomic structure of zirconia. Our results showed the importance of covalent bonding for the phase-stabilisation mechanism in this ceramic system.

    Original languageEnglish
    Pages (from-to)141-145
    Number of pages5
    JournalMicron
    Volume30
    Issue number2
    DOIs
    Publication statusPublished - 1999 Apr

    Keywords

    • Cerium
    • Electron energy loss spectroscopy
    • Oxygen K-edge
    • Zirconia

    ASJC Scopus subject areas

    • Structural Biology
    • Materials Science(all)
    • Physics and Astronomy(all)
    • Cell Biology

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