Characterization of Ferroelectric Properties of Bi{sub}(4-x)Pr{sub}xTi{sub}3O{sub}12 Polycrystals

摘要

Effects of Praseodymium doping on the ferroelectric properties of Bi{sub}4Ti{sub}3O{sub}12 using dense ceramics was systematically investigated from room temperature to 730°C. DRX and XPS studies shows that structure can accept only 10% of praseodymium without the precipitation of second phases. Thermoelectric analysis and ferroelectric hysteresis measurements were performed and show that the incorporation of praseodymium modified the transition temperature Tc and slightly the polarization values. The incorporation of praseodymium resulted in a variation in the permittivity and in the remnant polarization (2P{sub}r). The polarization characteristics in the samples doping were different to Bi{sub}4Ti{sub}3O{sub}12.