Electronic Absorption Spectrum of Rb₂MnCl₄ Single Crystals

Abstract

Abstract The polarized electronic absorption spectra of Rb 2 MnCl 4 single crystals are studied down to 77 K in the 15 000 to 45 000 cm −1 spectral region. The observed spectral features can be satisfactorily explained by invoking the four‐parameter ( B , C , D q , and α) ligand field model which indicates the octahedral site symmetry around the Mn 2+ ion. Two higher energy bands are found to be due to double‐exciton transitions.