THE CORRELATION BETWEEN THE OPTICAL-ABSORPTION SPECTRUM AND PARAMAGNETIC PROPERTIES OF NEODYMIUM TRIFLUORIDE

The 4f3 configuration of Nd3+ in NdF3 has been revisited. The real poi nt symmetry of the crystalline matrix-C3-been considered for the simul ation, which means 15 crystal field parameters (CFPS). The simulation has been conducted by considering together the energy level scheme der ived from the optical absorption spectra and the paramagnetic suscepti bility and its variation with the temperature and the g values of the ground level. It is shown that only a single set of CFPS reproduces th is information correctly, whereas various sets are found if only the e nergy level scheme is retained in the simulation process.