2023/09/16 by Purwar, Shubham, Low, Achintya, Bose, Anumita +2 · 3 citations
#FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci)
paper · doi:10.48550/arxiv.2309.08898
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 antiferromagnetic-like transition. Interestingly, between 50 and 150 K, we observe fluctuating magnetic moments between in-plane and out-of-plane orientations, leading to non-coplanar 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 AFM ordering. The Rhodes-Wohlfarth ratio \fracμeffμs=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 non-coplanar spin-structure in the presence of strong magnetocrystalline anisotropy. We examined the mechanism of anomalous Hall effect by employing the first principles calculations.