Disorder in ion motion in a tysonite-type superionic conductor was deduced from nuclear magnetic resonance spectra. It was found that, at 260 to 400K, ion movement was observed on only one of the sub-lattices, and exhibited a correlation time distribution. The shape of the distribution could be closely fitted using a log-Gaussian curve. The distribution in correlation times reflected noticeable spatial fluctuations in local potentials.

A.F.Privalov, I.V.Murin: Fizika Tverdogo Tela, 1999, 41[9], 1616-20 (Physics of the Solid State, 1999, 41[9], 1482-5)