# Hard magnetic properties in nanoflake van der Waals Fe3GeTe2

Article · Cheng Tan, Jinhwan Lee, Soon‐Gil Jung, Tuson Park, Sultan Albarakati, James G. Partridge, Matthew R. Field, Dougal G. McCulloch, Lan Wang, Changgu Lee

- Archive id: openalex:W3099833255
- Published: 2024-11-23
- Venue: RePEc: Research Papers in Economics
- Citations: 373
- Source URL: https://www.nature.com/articles/s41467-018-04018-w
- Provenance: openalex

## Abstract

Abstract Two-dimensional van der Waals materials have demonstrated fascinating optical and electrical characteristics. However, reports on magnetic properties and spintronic applications of van der Waals materials are scarce by comparison. Here, we report anomalous Hall effect measurements on single crystalline metallic Fe3GeTe2 nanoflakes with different thicknesses. These nanoflakes exhibit a single hard magnetic phase with a near square-shaped magnetic loop, large coercivity (up to 550 mT at 2 K), a Curie temperature near 200 K and strong perpendicular magnetic anisotropy. Using criticality analysis, the coupling length between van der Waals atomic layers in Fe3GeTe2 is estimated to be ~5 van der Waals layers. Furthermore, the hard magnetic behaviour of Fe3GeTe2 can be well described by a proposed model. The magnetic properties of Fe3GeTe2 highlight its potential for integration into van der Waals magnetic heterostructures, paving the way for spintronic research and applications based on these devices.

_Abstract reproduced under CC-BY (publisher license, via OpenAlex)._

Topics: [2D Materials & Van der Waals Heterostructures](https://space-kitty.com/topics/2d-materials)

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