Abstract
We have made a comparative study of the electric-field-induced g shifts in paramagnetic resonance for tetragonal Nd3+ sites in CaF2 and SrF2, and for tetragonal U3+ sites in CaF2, SrF2, and BaF2. Approximate estimates for the shifts in CaF2 are given, and the variation of the shifts through the series of host lattices is discussed.