Micro-crystallization and spectroscopic properties of Er,Yb:RAl-borates (R = Y,Gd) obtained in RAl3(BO3)4-K2Mo3O10-B2O3-R2O3 and Ral(BO3)4-B2O3 systemsстатья
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Дата последнего поиска статьи во внешних источниках: 17 января 2017 г.
Аннотация:The spontaneous YAl3(BO3)4 (YAB) and GdAl3(BO3)4 (GdAB) crystals (of nominal composition and co-doped with Er and Yb) up to 4–5 mm in length were grown from high-temperature solutions using K2Mo3O10 based fluxes in the temperature range of 1120–900 °C. Glass–ceramic composites based on the YAB and GdAB micro-crystals have been prepared by quenching YAB–B2O3 and GdAB–B2O3 melts and characterized by X-ray diffraction and spectroscopic methods. The vitrified melt was shown to contain micro- and nano-crystalline rare-earth borate phases. Their distribution over the composites has been investigated by electron microscopy and three-dimensional X-ray tomography. The absorption spectra of these materials co-doped with erbium and ytterbium as well as luminescence spectrum were demonstrated.