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Characterization of oxygen dynamics in ZrW₂O₈

Hampson, M.R.; Evans, J.S.O.; Hodgkinson, P.


M.R. Hampson


The dynamics of oxygen motion in ZrW2O8 have been characterized using O-17 solid-state NMR. Rates of dynamic exchange have been extracted from magnetization transfer experiments over a temperature range of 40 to 226 degrees C, and distinct values for the associated activation barrier have been observed on either side of the order/disorder phase transition at similar to 175 degrees C. A detailed model for the dynamical process is proposed, which reconciles the observation of continuing oxygen dynamics in the low-temperature phase with the static order implied by earlier X-ray diffraction studies.


Hampson, M., Evans, J., & Hodgkinson, P. (2005). Characterization of oxygen dynamics in ZrW₂O₈. Journal of the American Chemical Society, 127(43), 15175-15181.

Journal Article Type Article
Publication Date 2005-11
Deposit Date Apr 25, 2007
Journal Journal of the American Chemical Society
Print ISSN 0002-7863
Electronic ISSN 1520-5126
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 127
Issue 43
Pages 15175-15181