Abstract:A series of multiferroic 1-x(0.71BiFeO3-0.29BaTiO3)-xLaFeO3 (x = 0, 0.1, 0.2, 0.3, 0.4, 0.5) ceramics were synthesized by solid state reaction. The effects of LaFeO3 content in 0.71BiFeO3-0.29BaTiO3 system on structure, microstructure, electric and magnetoelectric properties were investigated. All the ceramics form a single phase perovskite structure, and structural phase transition is formed with the increase of LaFeO3. The ceramics show good microscopic appearance. The grain sizes are uniform and decrease obviously with increasing of LaFeO3, which acts as an inhibitor for grain growth. The dielectric constants are decreased by the doping level of LaFeO3. The ceramic of x = 0.1 exhibits low leakage current density J with the value around 10-7~10-8 A/cm2. With the increase of LaFeO3, the remnant polarization and the magnetoelectric coefficient aME of the ceramics attain maximum at x = 0.1, with the value of Pr = 0.45?C/cm2 and aME = 132.21 mV/cm?Oe, respectively. These results suggest that the ferroelectricity properties and ferromagnetism effect can be improved simultaneously by adding suitable LaFeO3.