Control of Shapes and Microstructures

Nanocomposite is an ideal structure of metal fluoride nanocrystals for viable optical applications. The idea originates from designing oxyfluoride glass ceramics where nanometer-scale metal fluoride crystals are dispersed in glass matrices of high transparency. Wang and Ohwaki attempted to prepare transparent oxyfluoride glass ceramics based on 

Yb —co-doped Si02-LaF3 [60,61] glass-ceramics have been prepared through a similar sol-gel processing so far. 

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