Fe3+ paramagnetic ion in α-Al2 O3 energy levels revisited. Application to a 31 GHz Maser proposal

M. Mrad, P. Y. Bourgeois, Y. Kersalé +1

The molecular structure of a 3d 5 configuration ion in a trigonal ligand field is theoretically established on the basis of the 252\times252 complete energy matrice. The optical ab…