Development of CaF2 based Glass Ceramic.

In the present work the glass of composition 40 % SiO2, 5 % Al2O3, 15 % Na2O, 5 % CaO , 12,5 % NaF , 21 % CaF2 and 1.5 % Sb2O3 (mol%) was prepared to investigate the crystallization of CaF2 in the parent glass matrix. To accelerate the crystallization and to develop the up conversion fluorescence property Er2O3 was doped in 0.5% , 1 % and 1.5 % (mol%). The casted glass was subjected to thermal treatment between 600 – 750oC. To observe the effect of rare earth on crystallization glass samples were examined in DSC. Spectroscopic property of the base glasses were studied using UV-Visible spectrophotometer. Phase authentication was carried out using X-Ray diffraction analysis