ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
We present an approximate expression for the electronic Raman scattering intensity of localized impurities, and we employ this result in a simple model of intermediate valence compound with a hybridization term of the Anderson type. We have calculated the relevant time correlation functions using a Green's function technique. Using the published estimates of p, the probability of finding a Sm ion as Sm3+, determined from the lattice parameters, we were able to compare our expression for the Raman linewidth with published measurements of the linewidth in Sm1-xYxS. The theoretical dependence of the linewidth with x at 300 K gives only qualitative agreement with experiment. Out theory reproduces fairly well the independence of the line shape when samples with 0.15 〈 x 〈 0.3 underwent the temperature-induced black to gold transition.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250100110
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