Abstract
The ferroelectricity of Bi3.2Er0.8Ti3O12 (BET), and Bi3.2Er0.8Ti2.97V0.03O12 (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 18 µC/cm2 and 64kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BETV ceramics up to 30 μC/cm2, which is much larger than that of the BET ceramics. Therefore, co-sustitution of Er and V in Bi4Ti3O12 (BIT) ceramic is effective for the improvement of its ferroelectricity.
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