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Updated: Jul 25, 2025
08:55
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
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Ferromagnetism emerged from non-ferromagnetic atomic crystals
Cheng Gong1,2, Peiyao Zhang1,3, Tenzin Norden3
1Nano-scale Science and Engineering Center (NSEC), 3112 Etcheverry Hall, University of California, Berkeley, CA, USA.
Nature Communications
|June 28, 2023
Summary
Researchers converted antiferromagnetic materials into ferromagnetic ones by interfacing them with tungsten disulfide (WS2). This discovery broadens the scope of two-dimensional (2D) magnets for spintronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Two-dimensional (2D) ferromagnetic materials are crucial for next-generation spintronic devices.
- The limited variety of 2D magnets restricts their application range.
- Converting antiferromagnetic materials to ferromagnetic ones could expand the possibilities.
Purpose of the Study:
- To explore the potential of interfacing antiferromagnetic materials with non-magnetic 2D materials.
- To investigate the emergence of ferromagnetism at interfaces.
- To characterize the magnetic properties of such heterostructures.
Main Methods:
- Fabrication of heterostructures by interfacing non-magnetic WS2 with antiferromagnetic FePS3.
- Measurement of the enhanced Zeeman effect in WS2.
- Analysis of interfacial exchange field and its dependence on WS2 thickness.
Main Results:
- Emergent ferromagnetism was observed at the WS2-FePS3 interface.
- WS2 exhibited an enhanced Zeeman effect with a significant interfacial exchange field (~38 Tesla).
- The magnetic properties showed a strong dependence on the WS2 layer thickness.
Conclusions:
- Interfacing non-magnetic WS2 with antiferromagnetic FePS3 can induce ferromagnetism.
- This approach significantly enhances the magnetic properties of WS2.
- The layer-tailorable interfacial coupling in WS2-FePS3 heterostructures opens new avenues for designing 2D spintronic devices.
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