Ferroelectric Properties of Bismuth Titanate Ceramics by Eu3+/V5+ Substitution
The ferroelectricity of Bi3.25Eu0.75Ti3O12 (BET), and Bi3.25Eu0.75Ti2.97V0.03O12 (BETV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BET ceramics are 16 µC/cm2 and 62kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BET ceramics up to 25 μC/cm2 which is larger than that of the BET ceramics. Therefore, co-sustitution of Eu and V in Bi4Ti3O12 (BIT) ceramic is effective for the improvement of its ferroelectricity.
Yiwang Bao, Danyu Jiang, Li Tian and Jianghong Gong
X.A. Mei et al., "Ferroelectric Properties of Bismuth Titanate Ceramics by Eu3+/V5+ Substitution", Key Engineering Materials, Vol. 492, pp. 230-233, 2012