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 language | English |
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Pages (from-to) | 895-901 |
Number of pages | 7 |
Journal | Journal of Physics and Chemistry of Solids |
Volume | 43 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1982 |
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics