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Comparative Raman Study of Phonon Linewidths in Pure and Lead‐Doped CsCdBr 3
Author(s) -
Pilla O.,
Cazzanelli E.,
Blanzat B.,
Andraud C.,
Pelle F.
Publication year - 1987
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.2221440245
Subject(s) - raman spectroscopy , doping , phonon , atmospheric temperature range , symmetry (geometry) , chemistry , condensed matter physics , analytical chemistry (journal) , lead (geology) , order (exchange) , range (aeronautics) , materials science , physics , optics , thermodynamics , geology , chromatography , geometry , mathematics , finance , geomorphology , economics , composite material
Raman spectra of CsCdBr 3 are reported in the temperature range 4.2 to 300 K. The symmetry assignation is performed for all the observed peaks; besides the five expected Raman active first‐order modes, a weak structure is observed and attributed to a second‐order process. The temperature dependence of frequencies and linewidths is studied. An anomalous effect of Pb doping on the low temperature linewidths is discussed.