Dielectric Properties of Low-Temperature Sintered Ba0.6Sr0.4TiO3 Ceramics by Addition of Bi2O3-CuO Mixed Oxides
The effect of 9Bi2O3-CuO mixed oxides as sintering agent on sintering behaviors and dielectric properties of Ba0.6Sr0.4TiO3 (BST) ceramics were investigated. It was found that 9Bi2O3-CuO mixed oxides lowered the sintering temperature about 300°C and that highly denser BST ceramic pellets were obtained by sintering at 975oC with addition of 5.0-10.0wt% mixed oxides. For BST ceramics with 5.0wt% CB content sintered at 975°C, had a moderate dielectric constant (ε=1315), low dielectric loss (0.0067) and high tunability (36%) at dc electric field of 20kV/cm and at room temperature and at 10kHz.
Tadashi Takenaka, Hajime Haneda, Kazumi Kato, Masasuke Takata and Kazuo Shinozaki
H. T. Jiang et al., "Dielectric Properties of Low-Temperature Sintered Ba0.6Sr0.4TiO3 Ceramics by Addition of Bi2O3-CuO Mixed Oxides", Key Engineering Materials, Vols. 421-422, pp. 61-64, 2010