材料期刊网

A theoretical method for studying the local structure of a doped system has been established on the basis of a 252 x 252 complete energy matrix in a tetragonal ligand-field. By analysing the EPR spectrum of an (FeOF5)(4-) cluster in diamagnetic perovskites RbCdF3, the local structure parameters R-1 and R-2 of RbCdF3 crystal, doped with iron ion, has been determined using a more sensitive (FeOF5)(4-) than (FeF6)(3-) cluster as a probe. The calculations can be reasonably explained by electrostatic interaction and simultaneously can provide a satisfactory explanation of the large EPR parameter b(2)(0)