Mar 1, 2001
XANES study of charge ordering on the spin-Peierls phase transition of α′-NaV2O5
Journal of Synchrotron Radiation
- Volume
- 8
- Number
- First page
- 746
- Last page
- 748
- DOI
- 10.1107/S0909049500020872
α′-NaV2O5 transforms at TC = 34K, and the origin of the phase transition seems to be caused by the charge order and spin-Peierls mechanism. However the experiments which reveal the existence of charge order are very little. We measured XANES of V atoms which relates to the valence of V. It was found that the valences of V atoms in NaV2O5 were V4.5+ in the high temperature phase by comparing pre-edge and XANES of NaV2O5 with that of LiV2O5, CaV2O5 and V2O5. The analysis of EXAFS also shows the environment of the V4.5+ state.
- Link information
- ID information
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- DOI : 10.1107/S0909049500020872
- ISSN : 0909-0495
- Pubmed ID : 11512917
- SCOPUS ID : 18044401572