Raman Scattering from Vibrational Modes in Layered Cd  x  Hg 1– x  I 2  Solid Solution | Zendy

Anedda A. | Zendy; Bongiovanni G. | Zendy; Fortin E. | Zendy

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Raman Scattering from Vibrational Modes in Layered Cd x Hg 1– x I 2 Solid Solution

Author(s) -

Anedda A.,

Bongiovanni G.,

Fortin E.

Publication year - 1988

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221460237

Subject(s) - raman spectroscopy , raman scattering , phonon , normal mode , molecular vibration , degeneracy (biology) , vibration , solid solution , materials science , low frequency , mode (computer interface) , frequency shift , molecular physics , chemistry , condensed matter physics , atomic physics , analytical chemistry (journal) , physics , optics , quantum mechanics , bioinformatics , chromatography , astronomy , computer science , metallurgy , biology , operating system

Raman spectra at 15 and 300 K of Cd x Hg 1– x I 2 solid solutions for 0 < x < 0.44 are investigated. One mode behaviour is observed for the low frequency phonons and the A 1g mode, while a two mode behaviour is exhibited by the higher frequency vibrations. The expected mass, force, and temperature induced splitting of the B 1g 2 and E g 1 degenerated modes is not observed. This fact proposes another different experimental evidence of the low Raman cross section of the B 1g 2 rigid layer mode. For the first time the degeneracy of the E g 2 mode with the A 1g is lifted and experimentally found.

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