Effects of Mg2+ on Microstructure and Microwave Dielectric Properties of La2/3TiO3 Ceramics
(1-x)La2/3TiO3-xLa(Mg1/2Ti1/2)O3 ceramics with x ranging from 0.01 to 0.3 were prepared by the conventional solid-state reaction method. Microstructure and microwave dielectric properties were studied. The perovskite compound La2/3TiO3 is stabilized when x = 0.1. The content of La2/3TiO3 increases with increasing x from 0.01 to 0.1, and thereafter decreases when x > 0.1. The same tendency was also observed on measuring the dielectric constant, temperature coefficient of resonant frequency and Q× ƒ. A maximum permittivity of 77.35 was achieved with these stabilized La2/3TiO3 ceramics. Close to zero τf value (1 ppm/°C) was obtained at x=0.3, but its Q× ƒ value was relative low.
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
A. M. Yang et al., "Effects of Mg2+ on Microstructure and Microwave Dielectric Properties of La2/3TiO3 Ceramics", Key Engineering Materials, Vols. 280-283, pp. 35-38, 2005