XANES studies on Eu-doped fluorozirconate based glass ceramics.

The influence of adding InF as a reducing agent on the oxidation state of Eu in fluorochloro- (FCZ) and fluorobromozirconate (FBZ) glass ceramics was investigated using x-ray absorption near edge (XANES) and photoluminescence (PL) spectroscopy. For both materials, it was found that InF decreases the Eu-to-Eu ratio significantly. PL spectroscopy proved that an annealing step leads to the formation of Eu-doped BaCl and BaBr nanocrystals in the FCZ and FBZ glasses, respectively.