About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Paper
Lattice dynamics of the superionic conductor AgI
Abstract
We present results of harmonic lattice-dynamics calculations of the density of states, infrared conductivity, and Raman scattering for the superionic conductor AgI. The calculations do not incorporate the low-frequency, diffusive aspects of the ionic motion, but they do contain the oscillatory aspects in some detail. We find that the intrinsic disorder of the α phase accounts for the broad spectra which are observed. In particular, the density of states and the calculated spectra display a lower-frequency transverse-acoustic-like feature as well as an upper-optic-mode peak at 100 cm-1 in agreement with experiment. We also consider effects of possible defect sites on the spectra of the wurtzite and α phases of AgI. © 1977 The American Physical Society.