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Reversible transition between the polar and antipolar phases and its implications for wake-up and fatigue in HfO2-based ferroelectric thin film

Author

Listed:
  • Yan Cheng

    (East China Normal University)

  • Zhaomeng Gao

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Kun Hee Ye

    (Seoul National University
    Electronic Materials Research Center, Korea Institute of Science and Technology)

  • Hyeon Woo Park

    (Seoul National University)

  • Yonghui Zheng

    (East China Normal University)

  • Yunzhe Zheng

    (East China Normal University)

  • Jianfeng Gao

    (Chinese Academy of Sciences)

  • Min Hyuk Park

    (Seoul National University
    Pusan National University)

  • Jung-Hae Choi

    (Electronic Materials Research Center, Korea Institute of Science and Technology)

  • Kan-Hao Xue

    (Huazhong University of Science and Technology)

  • Cheol Seong Hwang

    (Seoul National University)

  • Hangbing Lyu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Atomic-resolution Cs-corrected scanning transmission electron microscopy revealed local shifting of two oxygen positions (OI and OII) within the unit cells of a ferroelectric (Hf0.5Zr0.5)O2 thin film. A reversible transition between the polar Pbc21 and antipolar Pbca phases, where the crystal structures of the 180° domain wall of the Pbc21 phase and the unit cell structure of the Pbca phase were identical, was induced by applying appropriate cycling voltages. The critical field strength that determined whether the film would be woken up or fatigued was ~0.8 MV/cm, above or below which wake-up or fatigue was observed, respectively. Repeated cycling with sufficiently high voltages led to development of the interfacial nonpolar P42/nmc phase, which induced fatigue through the depolarizing field effect. The fatigued film could be rejuvenated by applying a slightly higher voltage, indicating that these transitions were reversible. These mechanisms are radically different from those of conventional ferroelectrics.

Suggested Citation

  • Yan Cheng & Zhaomeng Gao & Kun Hee Ye & Hyeon Woo Park & Yonghui Zheng & Yunzhe Zheng & Jianfeng Gao & Min Hyuk Park & Jung-Hae Choi & Kan-Hao Xue & Cheol Seong Hwang & Hangbing Lyu, 2022. "Reversible transition between the polar and antipolar phases and its implications for wake-up and fatigue in HfO2-based ferroelectric thin film," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28236-5
    DOI: 10.1038/s41467-022-28236-5
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    Cited by:

    1. Haidong Lu & Dong-Jik Kim & Hugo Aramberri & Marco Holzer & Pratyush Buragohain & Sangita Dutta & Uwe Schroeder & Veeresh Deshpande & Jorge Íñiguez & Alexei Gruverman & Catherine Dubourdieu, 2024. "Electrically induced cancellation and inversion of piezoelectricity in ferroelectric Hf0.5Zr0.5O2," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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