Resonant inelastic x-ray scattering at the Ce L{sub 3} edge of CePO{sub 4} and CeO{sub 2}: Implications for the valence of CeO{sub 2} and related phenomena
- Department of Chemistry, University of Western Ontario, London N6A 5B7 (Canada)
- PNC-CAT, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
We report a resonant inelastic x-ray scattering (RIXS) study of trivalent CePO{sub 4} and tetravalent CeO{sub 2} at the Ce L{sub 3} edge. It is found that (a) an intense RIXS multiplet is observed in the preedge of CeO{sub 2} and it is attributed to 2p-4f quadrupole transitions while this behavior is not seen in CePO{sub 4} (b) CePO{sub 4} shows the normal diminishing RIXS and the emerging nondispersed L{alpha}{sub 1} fluorescence with excitations above the edge while CeO{sub 2} shows a more complex behavior, and (c) the energy of the fluorescence x ray exhibits a dip when excited at the second resonance of the double white line of CeO{sub 2}, in contrast to the nondispersive behavior observed in CePO{sub 4}. These observations indicate that strong correlation exists in RIXS and that CeO{sub 2} is Ce (IV) in the ground state.
- OSTI ID:
- 20719143
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 3 Vol. 72; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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