铁磁性
凝聚态物理
材料科学
霍尔效应
拓扑(电路)
磁场
物理
电气工程
工程类
量子力学
作者
Shubham Purwar,Susmita Changdar,Susanta Kumar Ghosh,Tushar Kanti Bhowmik,S. Thirupathaiah
标识
DOI:10.1016/j.actamat.2024.119898
摘要
We report the magnetic, electrical, and magnetotransport (Hall effect) properties of the hexagonal itinerant ferromagnet Cr0.83Te. Further, a comprehensive study of the magneto-entropy scaling behavior has been done around the Curie temperature of TC≈ 338 K. A maximum entropy change (−ΔSmmax) of 2.77 J/kg − K and relative cooling power (RCP) of 88.29 J/kg near the TC have been achieved under an applied magnetic field of 5 T. The critical exponents, β = 0.4739(4), γ = 1.2812(3), and δ = 3.7037(5), have been extracted using the magneto-entropy scaling analysis. The obtained critical exponents indicate the presence of intricate magnetic interactions in Cr0.83Te. On the other hand, the magnetotransport study reveals a topological Hall effect attributed to the noncoplanar spin structure coexisting with a robust magnetocrystalline anisotropy. Further, we observe that the extrinsic skew-scattering mechanism originated anomalous Hall effect. Our experimental findings of the anomalous and topological Hall effect properties in the presence of intriguing high-temperature itinerant ferromagnetism and magnetocaloric effect in Cr0.83Te can offer potential technological applications at room temperature.
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