Related Experiment Video
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09:06
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Multistate Ferroelectricity Enabled by Electrically Controlled Phase Transition of Two-Dimensional Ices
Junjie Fang1, Wanlin Guo1, Hu Qiu1
1Nanjing University of Aeronautics and Astronautics, State Key Laboratory of Mechanics and Control for Aerospace Structures and Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Institute of Nano Science, Nanjing, 210016, China.
Physical Review Letters
|September 10, 2025
Summary
Two-dimensional (2D) ferroelectric ice exhibits multistate polarization, enabling a four-state switching pathway. This discovery paves the way for novel high-density nonvolatile memory devices using 2D ice materials.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Multistate ferroelectric polarization is crucial for high-density nonvolatile memory.
- Current ferroelectric materials are limited, restricting device development.
Purpose of the Study:
- To investigate the potential of nanoconfined two-dimensional (2D) ferroelectric ice for multistate polarization.
- To explore novel materials for advanced memory applications.
Main Methods:
- Extensive classical molecular dynamics simulations.
- Ab initio molecular dynamics simulations.
- Analysis of phase transitions induced by in-plane electric fields.
Main Results:
- Nanoconfined 2D ferroelectric ice demonstrates phase-dependent multistate polarization.
- An in-plane electric field induces reversible transitions between AA-stacked (low polarization) and AB-stacked (high polarization) ice phases.
- A four-state ferroelectric switching pathway was identified.
Conclusions:
- 2D ferroelectric ice can achieve multistate polarization, offering a new pathway for memory devices.
- The findings highlight 2D ice as a promising functional material for multistate ferroelectric memory.
- This research expands the scope of materials for nonvolatile memory technologies.
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