A. R. Aliev, I. R. Akhmedov, M. G. Kakagasanov, Z. A. Aliev.
ABSTRACT
The processes of molecular relaxation in nitrates of alkaline-earth metals: calcium Ca(NO3)2, strontium Sr(NO3)2, barium Ba(NO3)2 have been studied by Raman spectroscopy. It has been established that in the nitrates of calcium, strontium and barium, the phase transition of the first kind “crystal-melt” has a stretched character. The existence of a premelting region in the studied alkaline earth metal nitrates was found. It is shown that the phenomena of premelting are manifested in the temperature dependences of the spectral values.
KEYWORDS:
ionic melts, Raman scattering, molecular spectroscopy, vibrational relaxation, premelting, alkaline earth metal nitrates
DOI:10.31857/S0235010620040027