Fabrication and characterization of BiFeO3-BaTiO3 ceramics by solid state reaction

BiFeO3-based materials are expected to have both ferroelectricity and ferromagnetism simultaneously. In this study, BiFeO3-based ceramics have been fabricated by the solid state reaction. The effect of BaTiO3 content in BiFeO3-BaTiO3 system on the crystal structure, the magnetic properties and the electrical properties were investigated. Perovskite BiFeO3 was stabilized through the formation of solid solution with BaTiO3. Rhombohedrally distorted BiFeO3-BaTiO3 showed weak ferromagnetism. The resistivity of resultant ceramics was greatly improved by a small amount of Mn doping. 0.8 mol% Mn-doped 0.8BiFeO(3)-0.2BaTiO(3) ceramics exhibited typical P-E hysteresis loops.