Ferro-piezoelectric properties of 0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3 thin film prepared by metal-organic decomposition

0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3 thin film was fabricated by metal-organic decomposition, and the butterfly-shaped piezoelectric response curve was measured by a scanning probe microscopy system. The remanent polarization 2Pr and coercive field Ec are 24 μC/cm2 and 103 kV/cm under 782 kV/cm, and the dielectric constant and dielectric loss are 504 and 0.05 at 1 kHz. The average values of effective piezoelectric coefficient d33* and electrically induced strain are 94 pm/V and 0.3% under the bipolar driving field of 391 kV/cm, and the mechanisms concerning the dependence of the high piezoelectric properties were also discussed.