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

doi:10.1016/0022-3697(82)90039-7

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

Northwestern University

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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
Pages (from-to)	895-901
Number of pages	7
Journal	Journal of Physics and Chemistry of Solids
Volume	43
Issue number	9
DOIs	https://doi.org/10.1016/0022-3697(82)90039-7
Publication status	Published - 1982

ASJC Scopus subject areas

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

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

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.",

author = "McOmber, {J. I.} and Shriver, {D. F.} and Ratner, {M. A.}",

note = "Funding Information: Acknowledgements--This work was partially supported by the NSF-MRL program through a grant to the Northwestern MRL (Grant DMR79-23575). We are grateful to D. H. Whitmore for incisive and wise comments.",

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doi = "10.1016/0022-3697(82)90039-7",

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T1 - Single crystal polarized Raman spectra of the solid electrolyte Cu2HgI4; attempt frequencies for ion motion in Ag2HgI4

AU - McOmber, J. I.

AU - Shriver, D. F.

AU - Ratner, M. A.

N1 - Funding Information: Acknowledgements--This work was partially supported by the NSF-MRL program through a grant to the Northwestern MRL (Grant DMR79-23575). We are grateful to D. H. Whitmore for incisive and wise comments.

PY - 1982

Y1 - 1982

N2 - 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.

AB - 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.

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

Abstract

ASJC Scopus subject areas

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