Abstract

The BaF2-ScF3 system is studied using coprecipitation from aqueous solutions. Compound Ba3Sc2F12 is found to form over a wide range (10–60 mol %) of scandium concentrations in the initial solution. At higher scandium concentrations in solution, a new phase of provisional composition BaSc2F8 · 2H2O (hexagonal system, a = 9.6346 A, c = 4.0483 A) was obtained. Scandium fluoride hydrolysis is not observed by energy-dispersive X-ray analysis.

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