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The (1–x)BiFe0.91(Mn0.47Ti0.53)0.09O3–xBaTiO3 (BFMT–BT) lead-free ceramics have been fabricated by using the conventional solid-state reaction method. The phase structure of BFMT−BT investigated with X-ray diffraction shows a single perovskite phase. Although 20% mol of Bi2O3 was added into the raw materials in excess, the evaporation of Bi3+ ions during calcining and sintering processes is from 20 to 30% wt. relative to other elements. The effect of BaTiO3 content on the electrical properties of BFMT−BT ceramic was investigated. At a BaTiO3 concentration of 0.3 M and a sintering temperature of 950 °C, the electrical properties of ceramics are best with the density () of 7.6 g/cm3, the electromechanical coupling factor (kp) of 0.28, and the dielectric constant (εr) of 1028, and the difference in polarization at the zero field is about 10.5 C/cm2.

Fabrication and Electrical Characterization of Lead-Free BiFe0.91(Mn0.47Ti0.53)0.09O3–BaTiO3 Ceramics