Author/Authors :
M. Yamaga، نويسنده , , S. Yabashi، نويسنده , , Y. Masui، نويسنده , , M. Honda، نويسنده , , H. Takahashi، نويسنده , , Laura M. Sakai، نويسنده , , N. Sarukura، نويسنده , , J.-P.R. Wells، نويسنده , , G.D. Jones، نويسنده ,
Abstract :
Interconfigurational 4f↔5d VUV absorption and luminescence, intra-4f1 IR absorption and X-band EPR measurements have been carried out on CaF2:Ce3+ crystals co-doped with Na+ and Li+ ions. For both Li+ and Na+ co-doping, cubic, new tetragonal and rhombic-symmetry centres are observed. Cubic centres, which are readily observable by their infrared transitions, could not be identified and remain elusive in the EPR spectra.
Keywords :
VUV spectroscopy , Fluorite crystals , Crystal-field analyses , Ce3+
