Micro-crystallization and spectroscopic properties of Er, Yb:RAl-borates (R=Y, Gd) obtained in RAl3(BO3)4-K2Mo3O10-B2O3-R2O3 and RAl3(BO3)4-B2O3 systems
GdAB- and YAB-based glass–ceramics of different compositions have been prepared. Optimal temperatures for the synthesis were found. The absorption and luminescence spectra of these materials were demonstrated.