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Very‐low‐frequency inelastic light scattering in non‐crystalline films of alkaline‐earth halides
Author(s) -
Harbach F.
Publication year - 1979
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.2220950225
Subject(s) - alkaline earth metal , superposition principle , raman spectroscopy , halide , raman scattering , materials science , line (geometry) , range (aeronautics) , debye , laser , low frequency , chemistry , molecular physics , analytical chemistry (journal) , atomic physics , optics , condensed matter physics , physics , alkali metal , inorganic chemistry , geometry , mathematics , organic chemistry , chromatography , quantum mechanics , astronomy , composite material
The Raman scattering of non‐crystalline films of SrCl 2 , BaCl 2 , and BaFCl contains a strong “central peak” with a half‐width of about 40 cm −1 at 100 K. It can be explained as a superposition of a Lorentzian line centered at the laser frequency and a Debye‐like density of states. A structural correlation range 2σ ≈ 3 Å is deduced from the deviation of the experimental data points from this theoretical model above 36 cm −1 .