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Accession Number:
ADA090976
Title:
Optical Spectra of Yb3+ in Crystals with Scheelite Structure. II. Crystal-Field Calculations and a Phenomenological Crystal-Field Model.
Descriptive Note:
Technical rept.,
Corporate Author:
HARRY DIAMOND LABS ADELPHI MD
Report Date:
1980-09-01
Pagination or Media Count:
38.0
Abstract:
In a previous report we presented the results of a series of measurements of the optical and Zeeman spectra of trivalent ytterbium doped into the following members of the scheelite family of crystalline hosts cadmium molybdate CdMoO4, calcium tungstate CaWO4, calcium molybdate CaMoO4, strontium tungstate SrWO4, strontium molybdate SrMoO4, lead tungstate PbWO4, lead molybdate PbMoO4, barium tungstate BaWO4, and lithium yttrium fluoride LiYF4. Measurements were made at temperatures varying from below the lambda point of liquid helium up to room temperature on samples with impurity ion concentrations varying from 0.05 to 4.0 percent Yb. The results were the identification of the electronic transitions, both absorption and fluorescence, and the measurement of the g factors of the lowest J 52 state. The objective of this report is to take these experimental results and from them derive a self-consistent set of crystal-field parameters. Following this calculation, using the conventional approach of the electrostatic point charge model, we calculate a similar set of crystal-field parameters to compare with the experimentally determined ones.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
