Crystal electric field in the R2Ti2O7 pyrochlore compounds.

Using a simple scaling law, a unique set of crystal-field parameters for the rare-earth ions R in the R(2)Ti(2)O(7) pyrochlore series is shown to provide a proper description of the crystal-field excitations previously observed by neutron scattering. The two spectroscopic g factors are given for the compounds with doublet ground states, as well as the ground-state wavefunctions for all the compounds.