The distances of Co–O band in SrLaAlO₄: Co²⁺crystal

Abstract

Based on Zhao's semi-SCF d-orbit wave functions model of free Co 2+ ions, the superposition crystal field model and Macfarlane's perturbation loop method, the distances of the Co-O band in a SrLaAlO 4 :Co 2+ crystal were determined by calculating the experimental optical spectra and EPR parameter. The agreement between the calculated result and the experimental data showed quantitatively that Co-O distances perpendicular to and parallel with the C 4 axis were 0.1892 and 0.2139 nm, respectively.