Characterization of room-temperature in-plane magnetization in thin flakes of CrTe2 with a single-spin magnetometer
| Autor: | Nicolas Rougemaille, Anike Purbawati, F. Fabre, I. Philip, Johann Coraux, A. Finco, Vincent Jacques, Abdellali Hadj-Azzem |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Condensed matter physics 02 engineering and technology 021001 nanoscience & nanotechnology Magnetocrystalline anisotropy 01 natural sciences Orientation (vector space) Condensed Matter::Materials Science symbols.namesake Magnetization Magnetic anisotropy Ferromagnetism 0103 physical sciences symbols Curie temperature General Materials Science van der Waals force 010306 general physics 0210 nano-technology Anisotropy |
| Zdroj: | Physical Review Materials. 5 |
| ISSN: | 2475-9953 |
| DOI: | 10.1103/physrevmaterials.5.034008 |
| Popis: | We demonstrate room-temperature ferromagnetism with in-plane magnetic anisotropy in thin flakes of the $\mathrm{Cr}{\mathrm{Te}}_{2}$ van der Waals ferromagnet. Using quantitative magnetic imaging with a single-spin magnetometer based on a nitrogen-vacancy defect in diamond, we infer a room-temperature in-plane magnetization in the range of $M\ensuremath{\sim}27$ kA/m for flakes with thicknesses down to 20 nm. In addition, our measurements indicate that the orientation of the magnetization is not determined solely by shape anisotropy in micron-sized $\mathrm{Cr}{\mathrm{Te}}_{2}$ flakes, which suggests the existence of a non-negligible magnetocrystalline anisotropy. These results make $\mathrm{Cr}{\mathrm{Te}}_{2}$ a unique system in the growing family of van der Waals ferromagnets, as it is the only material platform known to date that offers an intrinsic in-plane magnetization and a Curie temperature above 300 K in thin flakes. |
| Databáze: | OpenAIRE |
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