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Toward Room-Temperature Electrical Control of Magnetic Order in Multiferroic van der Waals Materials
Chengxi Huang1, Jian Zhou2, Huasheng Sun1
1MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing and Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China.
Nano Letters
|May 31, 2022
Summary
Researchers discovered a new 2D material exhibiting coexisting ferromagnetic and ferroelectric properties at room temperature. This breakthrough enables electric-field control of magnetic order, paving the way for advanced nanospintronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Controlling magnetic order with electric fields in 2D materials is key for efficient nanospintronics.
- A critical need exists for room-temperature materials showing coupled ferromagnetic (FM) and ferroelectric (FE) orders.
Purpose of the Study:
- To identify and investigate a 2D material with coexisting room-temperature FM and FE properties.
- To explore the potential for electric-field control of magnetic order in such materials.
Main Methods:
- First-principles calculations were employed to predict material properties.
- The study focused on a 2D transition metal carbide system.
Main Results:
- The 2D transition metal carbide exhibits coexisting room-temperature FM and FE orders.
- Strong coupling was observed between magnetic moment distribution and electric polarization.
- Electric-field switching between FM and ferrimagnetic orders was demonstrated in a vdW heterostructure.
Conclusions:
- The identified 2D material is a promising candidate for nonvolatile electric-field control of magnetism.
- These findings represent a significant advancement towards room-temperature multiferroicity and magnetoelectric coupling in 2D systems.
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