Abstract

Large yttrium and rare earth aluminum garnet crystals that are essentially free of flux pockets, veils or discoloration due to dispersed Pb can be grown from a PbO·PbF 2·B 2O 3 flux as a cluster alone or surrounded by plates of sapphire or ruby in a rosette fashion. Quality is improved by growth in the presence of massive Al 2O 3 at a high temperature.

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