Electric writing and its retention behavior in ferroelectric 0.94(Bi_0.5Na_0.5)TiO₃-0.06BaTiO₃ thin films investigated by piezoelectric force microscopy

K. ZhanSchool of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaCorrespondence[email protected] [email protected]

M. SuSchool of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China

B. ZhaoSchool of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaCorrespondence[email protected] [email protected]

H. HanSchool of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China

Q. YuanSchool of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China

X. Y. WangSchool of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China

ABSTRACT

0.94(Bi_0.5Na_0.5)TiO₃-0.06BaTiO₃(BNT-BT6) thin films with high piezoelectric property have been prepared by metal organic deposition method. The electric writing and its retention behavior of the thin films are investigated. It has been found that electric writing can be done on BNT-BT6 thin films, and the retention behavior of the thin films on Pt electrodes is polarization dependent. The c⁻ domains exhibits better stability than that of c⁺ domains. With the retention time prolongs, the polarized domain states decays. The retention behavior of BNT-BT6 ferroelectric thin film is attributed to the built-in bias at the BNT-BT6/Pt interface, which triggers the nuclei of c⁻ domains near the domain boundary.

KEYWORDS:

Funding

This work was supported by China Postdoctoral Science Foundation (2014M551427), and the Hujiang Foundation of China (B14006).

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Electric writing and its retention behavior in ferroelectric 0.94(Bi_0.5Na_0.5)TiO₃-0.06BaTiO₃ thin films investigated by piezoelectric force microscopy

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Electric writing and its retention behavior in ferroelectric 0.94(Bi0.5Na0.5)TiO3-0.06BaTiO3 thin films investigated by piezoelectric force microscopy

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Electric writing and its retention behavior in ferroelectric 0.94(Bi_0.5Na_0.5)TiO₃-0.06BaTiO₃ thin films investigated by piezoelectric force microscopy