Abstract
Multiferroic ceramics (Bi1.1FeO3) were synthesized by the conventional powder metallurgy route by adopting the melt-phase sintering followed by rapid thermal quenching technique. Effect of sintering temperature on physical, structural, microstructural, electric, and magnetic properties was studied. X-ray diffraction and scanning electron microscopic studies showed that calcination and sintering promoted the desired perovskite (BiFeO3) phase and density of the ceramics. Sintering temperature improved the bulk density of the samples as a result of this leakage current density decreased and electric polarization improved. Sample sintered at 850 °C showed bulk density up to 81%. Electric measurements showed spontaneous polarization, remnant polarization, and coercive field of 14.44 μC/cm2, 5.47 μC/cm2, and 25.50 kV/cm, respectively. Linear behavior of magnetization as a function of applied magnetic field confirms the antiferromagnetic nature of the BiFeO3 compound at room temperature.
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