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Updated: Oct 18, 2025

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
Published on: July 5, 2019
Interface Engineering of Magnetic Anisotropy in van der Waals Ferromagnet-based Heterostructures
Sung Jong Kim1,2, Dongwon Choi2,3, Kyoung-Whan Kim2
1KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea.
Interface engineering precisely tunes van der Waals (vdW) magnet properties. This study quantifies magnetic anisotropy in Fe3GeTe2 and demonstrates local control of interfacial properties for novel magnetic behaviors.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Interface engineering is key for tuning magnetic properties in van der Waals (vdW) magnets and heterostructures.
- Quantitative analysis of magnetic anisotropy and modulation of interfacial properties are crucial for practical applications but challenging with conventional methods.
Purpose of the Study:
- To quantitatively characterize the magnetic anisotropy of Fe3GeTe2 layers.
- To identify bulk and interfacial contributions to magnetic anisotropy.
- To demonstrate local control of interfacial anisotropy in Fe3GeTe2-based heterostructures.
Main Methods:
- Utilized a magnetometric technique based on anomalous Hall measurements.
- Analyzed thickness dependences of the anisotropy field.
- Investigated Fe3GeTe2-based heterostructures with varying adjacent layers.
Main Results:
- Confirmed the intrinsic nature of Fe3GeTe2 magnetic anisotropy.
- Differentiated between interfacial and bulk contributions to anisotropy.
- Achieved local control of interfacial anisotropy, enabling multiple magnetic behaviors in a single channel.
Conclusions:
- The magnetometric technique is a valuable platform for investigating intrinsic properties of vdW magnets.
- Local interface engineering offers a pathway for realizing functional vdW magnetic devices.
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