Abstract
Optical absorption spectra of the single crystals and luminescence spectra of the (1%) polycrystalline samples were registered at temperatures . These spectra and earlier published data on magnetic properties of ions and on the temperature dependence of the electric field gradient at Yb nuclei in were used to analyze the crystal-field parameters in rare-earth titanates with the pyrochlore structure. The self-consistent sets of crystal-field parameters for rare-earth ions in the sites with the symmetry that describe satisfactory all known single-ion magnetic properties and low-energy excitations in crystals (, Ho, Er, Tm, Yb) are presented.
- Received 17 February 2004
DOI:https://doi.org/10.1103/PhysRevB.70.075112
©2004 American Physical Society