Disappearance of Fatigue Heterogeneity Due to an Introduction of La0.8Sr0.2MnO3 Buffer Layers in Modified Lead Zirconate Titanate Ceramics

Authors

  • Yong Zhang,

    Corresponding author
    • Beijing Fine Ceramics Laboratory, State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China
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  • Xiangrong Wang,

    1. Beijing Fine Ceramics Laboratory, State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China
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  • Liang Ma,

    1. Beijing Fine Ceramics Laboratory, State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China
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  • Fuyang Qv,

    1. Beijing Fine Ceramics Laboratory, State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China
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  • Jia Zhu

    1. Beijing Fine Ceramics Laboratory, State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China
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Author to whom correspondence should be addressed. e-mail: yzhang@tsinghua.edu.cn

Abstract

A disappearance of fatigue heterogeneity has been observed with an introduction of La0.8Sr0.2MnO3 (LSM) buffer layers in modified lead zirconate titanate ceramics. This disappearance provides clear evidence for the presence of trapped charge defects near the ferroelectric-electrode interface. The time-dependent polarization switching curves reveal that the modified lead zirconate titanate ceramics with LSM buffer layers displayed much less retardation after fatigue cycles. These results point to the essential role of oxygen vacancy during fatigue.

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