Electrical Properties of La2O3-Doped BaTiO3 Ceramics
Hysteresis loop and dielectric properties of lead-free BaTiO3-La2O3 piezoelectric ceramics and BaTiO3 ceramic compared with pure BaTiO3 has been systematically studied. The amount of La2O3 addition ranged from 0.3~0.5mol% by controlling the sintering temperature. Dielectric properties of BaTiO3-La2O3 were promoted after the addition of La2O3, the maximum value of dielectric constant reached 8,624, recently. The role of La2O3 on the solid-state sintering of BaTiO3 is discussed on the basis of the solid-solution defect model.
Xianghua Liu, Zhengyi Jiang and Jingtao Han
Y. J. Zhang et al., "Electrical Properties of La2O3-Doped BaTiO3 Ceramics", Advanced Materials Research, Vols. 148-149, pp. 1222-1225, 2011