Study of intrinsic parameters (IPs) for Cr3+ ions in fluorine crystals

In this study, superposition model (SPM) parameters consisting of intrinsic parameters (IPs) b 2 ¯ ( R 0 ) and t2 and the reference distance R0, have been obtained for Cr3+ ions in flourine ligand systems (Cr–F combination) by combining the EPR data and the crystallographic data of Cr3+ ions in several crystals. It is shown that the obtained SPM parameters are very effective for the investigations of ZFSPs of Cr3+ centers with different trigonal and tetragonal symmetries. The values of the SPM parameters proposed here may serve as resource to the theoretical investigations of other Cr3+–F− systems.