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Figure 11
Mean-square rotor amplitude divided by temperature ([{{\langle \Theta^2 \rangle}/{T}}]) versus temperature for quartz. The fit is to an Einstein model incorporating the dependence of RUM frequencies on the order parameter according to the split-atom model.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 37| Part 4| July 2004| Pages 536-544
doi:10.1107/S0021889804008957
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