Point-charge approximation of tetragonal Yb3+and Ce3+centres in CaF2
- 14 May 1977
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 10 (9) , 1413-1418
- https://doi.org/10.1088/0022-3719/10/9/014
Abstract
The perturbation to the cubic crystalline field at rare-earth ions substituting the cation in CaF2 is treated as a point-charge Coulomb field of the compensating ion. The cubic field energy states and the local charge compensation have enabled the author to calculate the wavefunction and g-values of Yb3+ and Ce3+ with tetragonal symmetry in CaF2. The results for Yb3+ turn out to be in reasonable agreement with experimental g-values, while those for Ce3+ seem not unsatisfactory.Keywords
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