Unidirectional electric field enables reversible ferroelectric domain engineering

Xingan Jiang, Muzhi Li, Yuanyuan Cui, Xiao Wu, Zunyi Deng, Xiangping Zhang, Jianming Deng, Xiaolei Wang, Dongdong Zhang, Xiangdong Yang, Zhuoyin Peng, Zhao Liang (), Xueyun Wang () and Weiyou Yang ()
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Xingan Jiang: Ningbo University of Technology
Muzhi Li: Changsha University of Science & Technology
Yuanyuan Cui: Beijing Institute of Technology
Xiao Wu: Fuzhou University
Zunyi Deng: Beijing Institute of Technology
Xiangping Zhang: Beijing Institute of Technology
Jianming Deng: Huizhou
Xiaolei Wang: Beijing University of Technology
Dongdong Zhang: Ningbo University of Technology
Xiangdong Yang: Ningbo University of Technology
Zhuoyin Peng: Changsha University of Science & Technology
Zhao Liang: Ningbo University of Technology
Xueyun Wang: Beijing Institute of Technology
Weiyou Yang: Ningbo University of Technology

Nature Communications, 2025, vol. 16, issue 1, 1-9

Abstract: Abstract The deterministic control of ferroelectric polarization via an external field is critical for advancing the technologies of modern information storage. Conventionally, reversible and cyclic polarization switching in ferroelectric materials requires bipolar electric fields. The present work demonstrates the efficient reversible and cyclic ferroelectric domain switching under a unipolar electric field in van der Waals ferroelectric CuInP2S6, enabled by Cu-ion migration across van der Waals gaps. It further unveils the remarkable “shape memory” effect of manipulated domains, and the programmable domain patterning under a unipolar electric field. These findings not only deepen the understanding of ferro-ionic coupling mechanism, but also provide insights into the origin of multiple polarization states, negative capacitance, and the quantized charge transport, paving the way for emerging storage technologies and low-power neuromorphic applications.

Date: 2025
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DOI: 10.1038/s41467-025-63049-2

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