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Bi 1Àx Nd x FeO 3 (BNFO) (x ¼ 0.01 $ 0.045) films were epitaxially prepared on LaNiO 3 [100]/Si substrates via a metal organic decomposition method. Well-saturated and rectangular P-E hysteresis loop can be observed in BNFO x¼0.03 film. Additionally, the domains in all BNFO films can be fully switched using a piezoelectric-mode atomic force microscope. More importantly, the BNFO x¼0.03 film exhibits a large and stable piezoresponse ($160 pm/V). These phenomena can be ascribed to the lowest leakage current and redistribution of V O in this film. V C 2012 American Institute of Physics. [http://dx.

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