Crystallographic, magnetic and magnetocaloric properties in Yb-based alloy
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Dzubinska, A.; Giovannini, M.; Reiffers, M.; Rodríguez Fernández, Jesús; Espeso Martínez, José Ignacio; Curlik, I.; Arun, K.; Varga, R.; Gómez Sal, José CarlosFecha
2022-06-01Derechos
©2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Publicado en
Journal of Magnetism and Magnetic Materials, 2022, 551, 169102
Editorial
Elsevier
Disponible después de
2024-06-01
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Palabras clave
Rare earth
Magnetic properties
Heat capacity
Magnetocaloric effect
Spin fluctuations
Resumen/Abstract
The crystallographic and magnetic properties as well as the magnetocaloric effect (MCE) of the polycrystalline Yb0.5Gd0.5Ni5 alloy were investigated. The alloy crystallizes in the hexagonal CaCu5 structure. The magnetic properties showed the transition to a ferromagnetic state at Tc = 21.8 K. The heat capacity confirmed such behaviour. The Sommerfeld coefficient yielded a heavy-fermion value 790 mJ/mol.K2. Moreover, a −ln T dependence below 3 K at zero applied magnetic field was observed. The magnetocaloric effect shows an asymmetric shape of the −ΔSM dependence due to the presence of spin fluctuations.
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