  Mixtures (1 - x) LiGdF4 + x LiLuF4 (0.50? \leq x \leq 0.75) were melted and
submitted to one zone melting cycle under a reactive HF atmosphere, aiming the
study of the crystal growth of LiGd1-xLuxF4 solid solutions. Phase
identification and compositional studies of the ingots were performed by
scanning electron microscopy, energy dispersive X-ray spectrometry, and X-ray
powder diffraction. Transparent regions of the bar related with the formation
of LiGd1-xLuxF4 solid solutions were found to be enlarged proportionally to the
initial amount of Lu in the mixtures. Gd segregates to the end of the ingot.
