Abstract
The BiFeO3 was prepared by a mixed oxide, solid-state reaction method. Excess Bi2O3 (1–7wt%) was introduced prior to powder calcination to compensate for any Bi2O3 that may have been lost from the samples due to volatilization during heat treatments. Various heating rates (1–10°C/min) were performed at the calcination state. X-ray diffraction analysis revealed that pure phase BFO was observed for the samples calcined at a low heating rate (1°C/min) and contained lower amount of Bi2O3.The higher levels of excess Bi2O3 produced an increased in dielectric constant and dielectric loss. Further, ferroelectric behavior was improved for higher amount Bi2O3 contented samples.
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