Hard magnetic properties in nanoflake van der Waals Fe3GeTe2
| Autor: | Jinhwan Lee, Sultan Albarakati, Matthew R. Field, Tuson Park, Changgu Lee, Soon-Gil Jung, Jim G. Partridge, Dougal G. McCulloch, Lan Wang, Cheng Tan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Science FOS: Physical sciences General Physics and Astronomy 02 engineering and technology 01 natural sciences Article General Biochemistry Genetics and Molecular Biology Nanomaterials symbols.namesake Hall effect 0103 physical sciences Physics::Atomic and Molecular Clusters Magnetic phase lcsh:Science 010306 general physics Condensed Matter - Materials Science Multidisciplinary Spintronics Condensed matter physics Materials Science (cond-mat.mtrl-sci) Heterojunction General Chemistry Coercivity 021001 nanoscience & nanotechnology symbols Curie temperature lcsh:Q van der Waals force 0210 nano-technology |
| Zdroj: | Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | Two dimensional (2D) van der Waals (vdW) materials have demonstrated fascinating optical, electrical and thickness-dependent characteristics. These have been explored by numerous authors but reports on magnetic properties and spintronic applications of 2D vdW materials are scarce by comparison. By performing anomalous Hall effect transport measurements, we have characterised the thickness dependent magnetic properties of single crystalline vdW Fe3GeTe2. The nanoflakes of this vdW metallic material 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, we confirmed the existence of magnetic coupling between vdW atomic layers and obtained an estimated coupling length of ~ 5 vdW layers in Fe3GeTe2. 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 vdW magnetic heterostructures, paving the way for spintronic research and applications based on these devices. Accepted by Nature Communications |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|