Ferro-piezoelectric properties of 0.94(Na sub(0.5)Bi sub(0.5))TiO sub(3)-0.06BaTiO sub(3) thin film prepared by metal-organic decomposition

0.94(Na sub(0.5)Bi sub(0.5))TiO sub(3)-0.06BaTiO sub(3) 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 2P sub(r) and coercive field E sub(c) are 24 kC/cm super(2) 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 [MathML equation] 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.