ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The behaviour of representative lines in the room temperature Raman spectrum of PbCl2 under the influence of a high hydrostatic pressure (up to 80 kbar) is reported. Pressure derivatives and mode Grüneisen parameters are calculated for 13 of the 18 Raman-active modes. Combining these results with previous data for the temperature dependence of these phono frequencies, the implicit (thermal expansion) and explicit (vibrational amplitude-driven) contributions are separated from ωj(T). This separation shows that anharmonic effects are stronger for vibrations involving motion of chlorine ions than for those involving only lead atoms.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250150212
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