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Ion dynamics and transition to the superionic state in β-AgI
Authors:D. Brinkmann  W. Freudenreich
Affiliation:Physik-Institut, University of Zürich, 8001 Zürich, Switzerland
Abstract:By measuring the nuclear spin-lattice relaxation time of 127I cooperative effects in Ag diffusion have been found which point to the necessity to include mutual cation interaction in the diffusion theory. An anomalous increase of the relaxation rate within 5 K just below the transition into the superionic state is taken as dynamical evidence for a discontinuity in the number of diffusing Ag ions, i.e. for sublattice melting.
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