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Thermoanalytical studies of coprecipitated hydroxides of yttrium and aluminum for preparation of rare-earth doped YAG phosphors

Yttrium-aluminum garnets (YAG) doped with a rare-earth element, including terbium (Tb), thulium (Tm), and Erbium (Er) produce the phosphorescence. YAGs may be synthesized by baking hydroxides of their constituents at a high temperature. No flux is required and the temperature of the solid state synthesis may be decreased to only 1150 degrees Celsius when the hydroxides are coprecipitated. We report here on the results of the thermoanalytical studies of the coprecipitated hydroxides in the YAG solid state synthesis.