Nano-Crystallization Behavior and Optical Properties of Diopside: Eu₂O₃-Based Glass-Ceramic System

In this study, glass-ceramic was prepared by adding TiO₂ as a nucleating agent to induce the internal crystallization behavior of diopside (CaO-MgO-2SiO₂)-based glass. The optimum composition for producing a transparent glass-ceramic was a composition of 15 wt% of TiO₂ mixed with 85% diopside. The light transmittance of the specimen decreased as the heat treatment temperature increased. When 394 nm excitation light was incident on the glass-ceramic containing 0.05% Eu₂O₃, red light of 614 nm wavelength emitted. We examined the relationship between the light emission mechanism and the crystal structure of the diopside-based glass-ceramic. We also discussed the applicability of the specimens prepared in this study as light emitting materials in various fields.