Crystal-field parameters for triply-ionized lanthanides in yttrium aluminium garnet
Carole A. MorrisonHarry Diamond Labs., Adelphi, MD, USAD. E. WortmanHarry Diamond Labs., Adelphi, MD, USAN. KarayianisHarry Diamond Labs., Adelphi, MD, USA
1976en
ABI
Abstract
Previously reported spectra of triply-ionized lanthanides in YAG are analysed theoretically by diagonalizing a parametrized D2 Hamiltonian in a free-ion wavefunction basis involving the lowest 10, 11, 9, 10 and 10 J-multiplets, respectively, of Nd, Eu, Tb, Dy and Er. The best-fit crystal-field parameters for all but Dy are then used to obtain a quadratically smoothed set of parameters for all the lanthanides. The smoothed set of parameters gives an RMS fit of 10.85 cm-1 for Dy compared with the best-fit parameters of 6.60 cm-1.
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