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Raman scattering in yellow and red mecury iodides
Author(s) -
Nakashima Shinichi,
Mishima Hiroaki,
Mitsuishi Akiyoshi
Publication year - 1973
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250010403
Subject(s) - raman spectroscopy , raman scattering , chemistry , symmetry (geometry) , crystal (programming language) , phase (matter) , spectral line , analytical chemistry (journal) , layer (electronics) , molecular physics , crystallography , optics , physics , organic chemistry , geometry , mathematics , astronomy , computer science , programming language
Abstract The first‐order Raman spectra of layer compounds HgI 2 in both red and yellow phases have been measured in the temperature region from −200°C to 150°C. A sudden change in the spectra was observed at the temperature of the phase change. Three strong Raman bands were observed in each phase. An interpretation of the spectra has been carried out on the basis of the group theoretical analysis for the layer symmetry and the crystal symmetry. The strength of the interlayer force in each phase has been estimated from the experiments.