Format

Send to

Choose Destination
Nat Commun. 2018 Apr 19;9(1):1554. doi: 10.1038/s41467-018-04018-w.

Hard magnetic properties in nanoflake van der Waals Fe3GeTe2.

Author information

1
School of Science, RMIT University, Melbourne, VIC 3001, Australia.
2
School of Mechanical Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
3
Center for Quantum Materials and Superconductivity (CQMS) and Department of Physics, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
4
School of Science, RMIT University, Melbourne, VIC 3001, Australia. lan.wang@rmit.edu.au.
5
School of Mechanical Engineering and SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440-746, Republic of Korea. peterlee@skku.edu.kr.

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.

Supplemental Content

Full text links

Icon for Nature Publishing Group Icon for PubMed Central
Loading ...
Support Center