Oxyfluoride glass ceramics containing CaF2nano-crystals doped with Y3+ ions were prepared by one-step crystallization of SiO2- Al2O3- CaO- CaF2 glasses at different temperatures. X- ray diffraction (XRD) results have revealed that CaF2 was the only precipitated crystalline phase in glass ceramic samples. According to the XRD results, a glass ceramic was selected as the best sample in order to ...

Transparent oxyfluoride glass-ceramic (OxGCs) coatings with composition 1.2Nd3+ 80SiO2- 20LaF3 were prepared following a sol-gel route labelled “pre-crystallized nanoparticles route”. OxGCs are transparent materials composed by one or more fluoride nanocrystals in glass matrix. have been encouraging results powders and bulk glass-ceramics but not coatings. In the present work, aqueous suspensio...

New oxyfluorophosphate glass-based composites which exhibit not only green upconversion under 980 nm pumping but also persistent luminescence (PeL) after being UV charged were successfully prepared using the direct doping method. The are composed of a glass-ceramic with Er 3+ doped CaF 2 crystals and luminescent particles SrAl O 4 :Eu,Dy composition. In standard method, glass melt is quenched f...