A recoupling procedure is used to show that the spin-correlated crystal field (SCCF) is included in the general two-electron-correlation crystal-field (CCF) parametrisation. A parallel result is that the spin-correlated Coulomb interaction (SCCI) is included in Judd's parametrisation of three-electron correlation in free ions. Experimental results and ab initio calculations show that the SCCI is important but does not dominate three-electron correlation. This suggests that contributions other than the SCCF may also be important in the CCF.
No takes yet. Share an insight, caveat, or question.
Siu et al. (1983) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: