Studies on BaO-CeO2-TiO2 Microwave Dielectric Ceramics
BaO-CeO2-TiO2 microwave dielectric ceramics with the different content of TiO2 were fabricated by a solid-state reaction method using BaCO3, CeO2, TiO2 powders as starting materials in view of the dispute. The sintering characteristics, phase composition, micro-structures and microwave dielectric properties of BaO-CeO2-nTiO2 microwave dielectric ceramics with different n values sintered at different temperatures were investigated. The results showed that the sintering temperature of BaO-CeO2-nTiO2 microwave dielectric ceramics was lower (< 1300°C), and CeO2 didn’t tend to form polynary compounds. When n = 3, the sintered ceramics had excellent dielectric properties: εr ≈40.3, tanδ ≈1.02×10-3 (1 MHz); εr ≈ 41.2, Q•f =19922GHz (6.865 GHz), τf = +22 ppm/°C .
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
Y. Xiao et al., "Studies on BaO-CeO2-TiO2 Microwave Dielectric Ceramics", Advanced Materials Research, Vols. 197-198, pp. 323-327, 2011