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 language | English |
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Pages (from-to) | 141-145 |
Number of pages | 5 |
Journal | Micron |
Volume | 30 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1999 Apr |
Externally published | Yes |
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