1. Magnetic and magnetocaloric properties in Gd1−yPryNi2 compounds.
- Author
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Alho, B.P., Lopes, P.H.O., Ribeiro, P.O., Alvarenga, T.S.T., Nóbrega, E.P., De Sousa, V.S.R., Carvalho, A.M.G., Caldas, A., Tedesco, J.C.G., Coelho, A.A., De Oliveira, N.A., and Von Ranke, P.J.
- Subjects
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GADOLINIUM compounds , *NICKEL compounds , *MAGNETOCALORIC effects , *MAGNETIC properties , *ELECTRIC field effects - Abstract
In this work, we report the magnetic and magnetocaloric properties of the Gd 1−y Pr y Ni 2 compounds from both experimental and theoretical points of view. It is worth noting that this series shows a variety of magnetic arrangements depending on the Pr concentration, including paramagnetism, ferrimagnetism and ferromagnetism. Our experimental work consists of the systematic analysis of the magnetic properties of the compounds with y = 0.0, 0.25, 0.5, 0.75 and 1.0, which includes temperature and magnetic field dependence of the magnetization, heat capacity and isothermal entropy change obtained by isothermal magnetization curves. Also, we developed a model Hamiltonian, which takes into account the exchange interactions among Gd-Gd, Gd-Pr and Pr-Pr ions, the Zeeman interaction for both ions and the crystalline electrical field interaction for the Pr ions. We systematically investigated the magnetic properties of the series and obtained a good agreement when compared with our experimental data. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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