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Publication
Solid State Communications
Paper
Raman measurements of the superionic conductor AgI
Abstract
Using the Raman technique, we have observed large abrupt reversible changes in the phonon spectrum at the transition temperature, Tc = 147°C, of the superionic conductor AgI. The defect nature of the high temperature phase completely breaks down the selection rules and allows the Raman measurements to give a measure of the frequency dependent conductivity, σ(ω), assuming a frequency independent matrix element. Similarities as well as differences in σ(ω) above and below Tc are shown. © 1976.