Synthesis Engineering of 2D Co3Sn2S2 with Tunable Anomalous Hall Effect
© 2025 Wiley‐VCH GmbH.
| Veröffentlicht in: | Advanced materials (Deerfield Beach, Fla.). - 1998. - (2025) vom: 14. Aug., Seite e09261 |
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| Weitere Verfasser: | , , , , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2025
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| Zugriff auf das übergeordnete Werk: | Advanced materials (Deerfield Beach, Fla.) |
| Schlagworte: | Journal Article 2D Co3Sn2S2 flux transformation giant anomalous Hall effect synthesis engineering tunable magnetic properties |
| Zusammenfassung: | © 2025 Wiley‐VCH GmbH. 2D kagome ferromagnetic materials serve as an exceptionally important platform for exploring spintronics and correlated quantum phenomena. However, the controllable synthesis of non-layered kagome ferromagnetic materials remains a significant challenge due to the absence of van der Waals gap. Here, it is shown that ultrathin non-layered 2D Co3Sn2S2 single crystal with kagome lattice, which owns strong ferromagnetic order and giant anomalous Hall effect (AHE), is obtained through flux transformation mechanism, where ultrathin Co3Sn2S2 single crystal is transformed from ultrathin layered intermediates of SnS2 or SnS. Magnetotransport measurements indicate that the AHE of the ultrathin Co3Sn2S2 single crystal is superior to those of its bulk and ultrathin polycrystalline counterparts. Further, combining dimensionality advantages and the introduced extrinsic contribution of Fe, where the doping concentration can be well controlled in 2D Co3Sn2S2, a giant anomalous Hall angle of 48% and an anomalous Hall conductivity of 2200 Ω-1 cm-1 are achieved. Under zero magnetic field, these two values are, to the best of knowledge, almost the highest ever recorded than in most known magnetic materials. The results establish 2D non-layered ferromagnetic kagome lattice as a platform for exploration of quantum confinement effect and other correlated phenomena |
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| Beschreibung: | Date Revised 14.08.2025 published: Print-Electronic Citation Status Publisher |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202509261 |