Determination of the Crystal-Field Splittings of Dy³⁺, Er³⁺ and Ce³⁺ by the Gd³⁺ Reference

Abstract

The crystal-field splittings between the ground and the first excited states Δ of magnetic ions Dy³⁺, Er³⁺ and Ce³⁺ have been acquired from the temperature-dependent ratio of the intensity of the Gd³⁺ EPR to the EPR intensity of the magnetic ions. From our best fits we obtain Δ≈80 K and 30 K for Dy³⁺ in YP and YAs, respectively; Δ≈45 K and 22 K for Dy³⁺ in LaP and LaAs; Δ≈120 K and 70 K for Er³⁺ in YP and YAs; and Δ≈22 K for Ce³⁺ in LaSb.