Mechanochemical synthesis of fluoride-ion conducting glass and glass–ceramic in ZrF4–BaF2 binary system

Fluoride glasses in the binary system ZrF 4 –BaF 2 were prepared via mechanochemical treatment. The glass-forming region of the ZrF 4 –BaF 2 system obtained using the mechanochemical method was wider than that obtained using the conventional melt-quenching method. The glass–ceramic 60ZrF 4 ·40BaF 2 (mol%) sample was obtained by heat treatment and shows a higher conductivity of 1.2 × 10 –6 S cm −1 at 200 °C than the pristine glass. This study revealed that mechanochemical treatment was effective for the synthesis of fluoride glasses.