Falin M.; Gerasimov K.; Latypov V.; Leushin A.; Bill H.; Lovy D.
(2003)
Yb3+ paramagnetic center of trigonal symmetry in CaF2 and SrF2 and SrF2 single crystals was studied using electron paramagnetic resonance and optical spectroscopy. Stark level energies of the Yb3+ multiplets were established ...