Sol-gel synthesis of lithium niobate doped by zinc and boron and study of the luminescent properties of ceramics LiNbO3: Zn: B

Abstract

A technological scheme was developed for the sol-gel synthesis of lithium niobate doped by zinc and boron with sol-gel method, and the optimal conditions at each stage of the process were determined. The limiting concentrations of doping impurities, at which a single-phase charge can be synthesized, were established. A ceramic composition LiNbO3: Zn: B with a bulk weight of ~2.3 g cm−3 is formed during the thermal treatment of the hydrate residue at 1100 ?? and an exposure for 3 h. Owing to the proposed method the product quality can be increased and the cost of the syntgesis of the LiNbO3: Zn: B ceramics minimized. The study of the luminescence properties of the ceramics based on the charge prepared from the charge mixture synthesized by the sol-gel method revealed that boron in the lithium niobate structure is an activator of luminescence in the high-energy visible spectral range. The obtained results can serve as a basis for the technology of production of both crystalline and ceramic new functional materials.