Characterization of room-temperature in-plane magnetization in thin flakes of CrTe\(_2\) with a single spin magnetometer

We demonstrate room-temperature ferromagnetism with in-plane magnetic anisotropy in thin flakes of the CrTe\(_2\) 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 magneti...

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Bibliographic Details
Published in:arXiv.org 2021-02
Main Authors: Fabre, F, Finco, A, Purbawati, A, Hadj-Azzem, A, Rougemaille, N, Coraux, J, Philip, I, Jacques, V
Format: Article
Language:English
Subjects:
Curie temperature
Diamonds
Ferromagnetism
Flakes (defects)
Magnetic anisotropy
Magnetism
Magnetization
Magnetometers
Room temperature
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Summary:We demonstrate room-temperature ferromagnetism with in-plane magnetic anisotropy in thin flakes of the CrTe\(_2\) 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 \(M\sim 27\) 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 CrTe\(_2\) flakes, which suggest the existence of a non-negligible magnetocrystalline anisotropy. These results make CrTe\(_2\) a unique system in the growing family of van der Waals ferromagnets, as it is the only material platform known to date which offers an intrinsic in-plane magnetization and a Curie temperature above \(300\) K in thin flakes.
ISSN:2331-8422
DOI:10.48550/arxiv.2011.05722