I.K. Pour, D.J. Krajnovich, et al.
SPIE Optical Materials for High Average Power Lasers 1992
Paper
Indirect superhyperfine interaction in HoVO4(Gd)
Abstract
Exceptionally large linewidths are observed in the EPR spectra of Gd impurities in the singlet ground-state system HoVO4. A new indirect superhyperfine interaction between the Gd3+ electrons and the Ho3+ nuclei through a highly polarizable Ho3+ electronic state is proposed to account for this behavior. The calculated linewidths are found to be in good agreement with the observations. © 1979 The American Physical Society.
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