Figure 2

(a) XRD patterns of 0.05 mol Er3+ doped GdOF precursor sintered at different temperatures for 3 h. (b) Crystal structure of rhombohedral GdOF.
(a) XRD patterns of 0.05 mol Er3+ doped GdOF precursor sintered at different temperatures for 3 h. (b) Crystal structure of rhombohedral GdOF.