The vibrational spectra of hexagonal perovskites. Part I. Single-crystal infrared reflectance and Raman spectra of complex halides having the CsNiCl3 structure
Abstract
Polarised i.r. reflectance and Raman data for oriented single crystals of some AMCl3 complexes (A = Rb or Cs; M = Fe, Co, or Ni) have been obtained and the observed bands assigned to the appropriate symmetry species. For CsNiCl3 and CsCoCl3 the i.r. reflectance spectra were analysed by use of the Kramers–Kronig relationships.