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Updated: Jan 17, 2026
09:41
Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
Published on: May 29, 2018
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Dzyaloshinskii-Moriya Interaction in Fe5GeTe2 Epitaxial Thin Films
João Sampaio1, Antoine Pascaud1, Edgar Quero1
1Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France.
Nano Letters
|September 19, 2025
Summary
This study measures Dzyaloshinskii-Moriya interaction (DMI) in iron germanium telluride (Fe5GeTe2) thin films. Researchers found significant DMI and low magnetic dissipation, making Fe5GeTe2 promising for spintronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Van der Waals ferromagnets are promising for spintronic devices.
- Chiral magnetic textures require significant Dzyaloshinskii-Moriya interaction (DMI) for stabilization.
- Epitaxial Fe5GeTe2 thin films are potential candidates for such applications.
Purpose of the Study:
- To directly measure DMI in epitaxial Fe5GeTe2 thin films.
- To investigate the origin and thickness dependence of DMI.
- To assess magnetic dissipation in Fe5GeTe2 for spintronic applications.
Main Methods:
- Brillouin light scattering spectroscopy was used to directly measure DMI.
- Epitaxial Fe5GeTe2 thin films of various thicknesses were studied.
- Magnetic dissipation was quantified.
Main Results:
- A consistent DMI (D = 0.04 mJ/m2) was observed across different film thicknesses.
- The DMI showed weak thickness dependence, suggesting a bulk origin.
- Low magnetic dissipation (α < 0.02) was measured.
Conclusions:
- Fe5GeTe2 exhibits significant DMI and low magnetic dissipation, suitable for chiral magnetic textures.
- The findings support a bulk origin for DMI, potentially linked to Fe site ordering.
- Fe5GeTe2 is a strong candidate material for exploring chiral magnetic textures in 2D materials.
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