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Updated: Sep 11, 2025
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Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
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Unidirectional electric field enables reversible ferroelectric domain engineering.
Xingan Jiang1, Muzhi Li2, Yuanyuan Cui3
1Institute of Micro/Nano Materials and Devices, Ningbo University of Technology, Ningbo City, China.
Nature Communications
|August 15, 2025
Summary
Researchers demonstrated reversible ferroelectric domain switching in CuInP2S6 using unipolar electric fields, driven by copper ion migration. This breakthrough enables programmable domain patterns and shape memory effects for advanced information storage and neuromorphic computing.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Deterministic control of ferroelectric polarization is crucial for information storage technologies.
- Conventional methods require bipolar electric fields for reversible polarization switching.
Purpose of the Study:
- To demonstrate efficient reversible ferroelectric domain switching under a unipolar electric field.
- To investigate the underlying mechanisms and potential applications of this phenomenon.
Main Methods:
- Utilized van der Waals ferroelectric CuInP2S6.
- Applied unipolar electric fields to induce and control ferroelectric domain switching.
- Investigated copper ion migration across van der Waals gaps.
Main Results:
- Achieved efficient reversible and cyclic ferroelectric domain switching using only unipolar electric fields.
- Observed a "shape memory" effect in manipulated ferroelectric domains.
- Demonstrated programmable domain patterning under unipolar electric fields.
Conclusions:
- The findings reveal a novel ferro-ionic coupling mechanism in van der Waals ferroelectrics.
- Provides insights into multiple polarization states, negative capacitance, and quantized charge transport.
- Paves the way for emerging storage technologies and low-power neuromorphic applications.
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