Optical Spectra of Yb(3+) in Crystals with Scheelite Structure. I. Explanation of the Spectra.
HARRY DIAMOND LABS ADELPHI MD
Pagination or Media Count:
The optical and Zeeman spectra are reported for Yb3 in nine single crystals of the Scheelite family at temperatures varying between 1.9 and 300 K and impurity ion concentration varying between 0.05 and 4 percent. The scheelite crystals examined were CaWO4, CaMoO4, SrWO4, SrMoO4, PbWO4, PbM0O4, CdMoO4, BaWO4, and LiYF4. The Yb3 ion substitutes for the cation and experiences a crystalline electric field of S4 point symmetry. The spectra were found to be highly structured containing the S4 electronic transitions, concentration dependent lines originating from low symmetry sites caused by lattice defects, and features tentatively identified as vibronic transitions. Vibronic selection rules for Yb3 in scheelite, which belongs to the C64h space group, have been calculated. Identification of the S4 spectral lines allowed the energy level schemes for Yb3 in the nine scheelites to be determined. author
- Atomic and Molecular Physics and Spectroscopy