Ceramics-Silikáty 56 (2) 127-129 (2012)

Antiferromagnetic to Paramagnetic Phase transitions in Bismuth Ferrite (BiFeO₃) Ceramics by Solid State Reaction

C. P. Bhole

This paper describes the synthesis of multiferroic BiFeO₃ ceramics was prepared by solid state reaction and high energy ball milling method. The structural studies was carried out by using an X-ray diffraction pattern and demonstrated that the BiFeO₃ ceramic crystallizes in a rhombhohedral perovskite phase. The ferroelectric hystersis loop measured at room temperature demonstrates a lossy loop with unsaturated behavior and symbolize a partial reversal of polarization. A dielectric constant with temperature measurement for BiFeO₃ ceramic represents an anomaly around 350°C for all frequencies and intimately associated with antiferromagnetic to paramagnetic phase transition (TN) of BiFeO₃.

Keywords: BiFeO3 Ceramics, Solid state reaction, X-ray diffraction, Ferroelectricity, Dielectric Properties