Single crystal polarized Raman spectra of the solid electrolyte Cu2HgI4; attempt frequencies for ion motion in Ag2HgI4

J. I. McOmber*, D. F. Shriver, M. A. Ratner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The polarized Raman scattering from small single crystals of Cu2HgI4 provided assignments for the more prominent Raman features to specific irreducible representations. The E symmetry assignment, mass dependence, and pressure dependence of the 36 cm-1 band in Cu2HgI4 and 24 cm-1 band in Ag2HgI4 indicate that these features approximate the attempt frequency for ion hopping. The unusually high pre-exponential factor in the Arrhenius expression for ion hopping is discussed in light of the observed attempt frequency; we conclude that despite the high activation energy the conduction mechanism is similar to other heavy-metal solid electrolytes.

Original languageEnglish (US)
Pages (from-to)895-901
Number of pages7
JournalJournal of Physics and Chemistry of Solids
Volume43
Issue number9
DOIs
StatePublished - Jan 1 1982

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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