The phonon dispersion curves, infra-red and Raman spectra of SrCl2

Abstract
The infra-red reflection and absorption spectra together with the polarized laser Raman spectra have been measured for a single crystal of SrCl2. The reflection spectrum has been analysed to give the dielectric parameters epsilon ' and epsilon " using Kramers-Kronig theory. These data have been used together with absorption spectrum to calculate the infra-red conductivity. The phonon dispersion curves for SrCl2 have been computed using q=0 data and the density of vibrational states is predicted. A value of 0.17 millidynes AA-1 is obtained for the principal strontium chloride force constant.