We have followed the temperature dependence of the second order Raman spectra of b.c.c. thalliumchloride crystals and polycrystalline powders with particular regard to the region immediately preceding and following melting. Our results, concerning mainly the behavior of the LA(X)-TA(X) peak, imply the appearance of a new damping mechanism for the TA(X) phonon approximately 10°C below the melting temperature. Furthermore, this conjecture seems to be supported by calorimetric measurements near melting.
Raman Spectroscopy of Thallium Chloride in the Melting Region
CAPOZZI, VITO GIACOMO;
1977-01-01
Abstract
We have followed the temperature dependence of the second order Raman spectra of b.c.c. thalliumchloride crystals and polycrystalline powders with particular regard to the region immediately preceding and following melting. Our results, concerning mainly the behavior of the LA(X)-TA(X) peak, imply the appearance of a new damping mechanism for the TA(X) phonon approximately 10°C below the melting temperature. Furthermore, this conjecture seems to be supported by calorimetric measurements near melting.File in questo prodotto:
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