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Interface Engineering Strategies for Magnetic and Magneto-Optical Enhancement of Two-Dimensional Fe3GeTe2
Lin Mao1, Xia Wang2, Manman Huang1
1Wuhan National High Magnetic Field Center and Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.
ACS Omega
|March 16, 2026
Summary
Interface engineering enhances two-dimensional (2D) ferromagnets like Fe3GeTe2 (FGT), boosting critical temperature and magnetic signal strength for spintronic devices. This research offers strategies for advanced 2D magnetic heterostructure applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Two-dimensional (2D) ferromagnets are crucial for spintronic devices, with critical temperature, exchange bias, and magnetic signal strength being key performance parameters.
- Interface engineering is a vital technique for modulating the magnetism of 2D ferromagnets and exploring new physical phenomena.
Purpose of the Study:
- To investigate interface engineering strategies for enhancing the magnetic properties of 2D ferromagnets, specifically Fe3GeTe2 (FGT).
- To explore the impact of heterostructures and nanostructures on magnetic parameters and magneto-optical effects.
Main Methods:
- Fabrication and characterization of van der Waals heterostructures (FGT/WTe2, FGT/MnPSe3).
- Utilizing Au-layer microcavities for magneto-optical amplification.
- Employing topological reflection magnetic circular dichroism to detect skyrmions.
Main Results:
- A 20 K increase in Curie temperature and an exchange bias of 0.016T were observed in engineered FGT systems.
- Interface-induced Dzyaloshinskii-Moriya interaction in FGT/WTe2 stabilized current-modulated skyrmions.
- Au nanostructures amplified Kerr rotation by 11-fold, reaching 16.5 mrad.
Conclusions:
- Interface engineering effectively tunes 2D ferromagnetism, enhancing key parameters for spintronic and magneto-optical applications.
- Heterostructures and plasmonic nanostructures offer practical pathways for designing high-performance, low-power spintronic and magneto-optical devices.
