Heavy metal oxide glass-ceramics containing luminescent gallium-garnets single crystals for photonic applications

Glass-ceramics containing rare earth gallium garnets were obtained using glass compositions as reactional medium. This work reports on the synthesis, and structural, morphological, optical characterizations of Er3+ Tm3+-doped Yb3Ga5O12 crystals prepared from controlled cooling heavy metal oxide melts. Micrometric cubic by controlling a earth-supersaturated glassy composition melted at high temperature. Crystals with sizes ranging between 5 150 µm formed into matrix. A garnet phase corresponding to space group Ia-3d was identified X-ray diffraction confirmed Rietveld simulations. The morphology studied scanning electron microscopies, while chemical elements mapped dispersive X-Ray spectroscopy. XRD, thermal analysis Raman properties both glass-ceramic materials evaluated UV–Vis luminescence spectroscopies. Micro-luminescence measurements that earths incorporated crystalline phase. Intense upconversion emissions (550 660 nm) Tm3+ (800 observed when glass-ceramics pumped 980 nm. These new are excellent candidates for development photonic devices.