Raman Spectra of Molten GdCl3-KCl and GdCl3-NaCl.

Abstract

The complex anions and their vibrational modes in molten GdC1a-KC1 and GdC13-NaC1 were examined by Raman spectroscopy. Each spectrum was deconvoluted into two or three peaks with the Lorentzian-type functions. The peaks in the spectra were assigned to three Raman active modes (v v2, v5) of the GdCle- octahedral complex anion. These peaks shifted toward the lower wavenumber region with increasing mole fraction of GdC13. The peak of vs mode was observed only in the low GdCla concentration region. The clustering of complex anion GdC163 appeared to exist in the melts. However, the clustering might be restrained when the GdC13 concentration became relatively low by adding KC1 or NaCl.