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Investigation of the anomalous and topological Hall effects in layered monoclinic ferromagnet Cr2.76 Te4

Purwar, S and Low, A and Bose, A and Narayan, A and Thirupathaiah, S (2023) Investigation of the anomalous and topological Hall effects in layered monoclinic ferromagnet Cr2.76 Te4. In: Physical Review Materials, 7 (9).

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Official URL: https://doi.org/10.1103/PhysRevMaterials.7.094204


We studied the electrical transport, Hall effect, and magnetic properties of monoclinic layered ferromagnet Cr2.76Te4. Our studies demonstrate Cr2.76Te4 to be a soft ferromagnet with strong magnetocrystalline anisotropy. Below 50 K, the system shows an antiferromagneticlike transition. Interestingly, between 50 and 150 K, we observe fluctuating magnetic moments between in-plane and out-of-plane orientations, leading to noncoplanar spin structure. On the other hand, the electrical resistivity data suggest it to be metallic throughout the measured temperature range, except a kink at around 50 K due to antiferromagnetic ordering. The Rhodes-Wohlfarth ratio μeffμs=1.89(>1) calculated from our magnetic studies confirms that Cr2.76Te4 is an itinerant ferromagnet. Large anomalous Hall effect has been observed due to the skew scattering of impurities and the topological Hall effect has been observed due to noncoplanar spin structure in the presence of strong magnetocrystalline anisotropy. We examined the mechanism of anomalous Hall effect by employing the first-principles calculations. © 2023 American Physical Society.

Item Type: Journal Article
Publication: Physical Review Materials
Publisher: American Physical Society
Additional Information: The copyright for this article belongs to Authors.
Keywords: Antiferromagnetism; Chromium compounds; Crystal symmetry; Ferromagnetic materials; Ferromagnetism; Magnetic moments; Spin Hall effect; Superconducting materials; Tellurium compounds; Topology, Anomalous hall effects; Antiferromagnetic-like transition; Electrical resistivity datum; Electrical transport; Ferromagnets; Monoclinics; Non-coplanar; Out-of-plane orientation; Soft-ferromagnets; Spin structures, Magnetocrystalline anisotropy
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 04 Mar 2024 08:51
Last Modified: 04 Mar 2024 08:51
URI: https://eprints.iisc.ac.in/id/eprint/84273

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