Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8154042 | Journal of Magnetism and Magnetic Materials | 2018 | 14 Pages |
Abstract
In this work, we report the magnetic and magnetocaloric properties of the Gd1âyPryNi2 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 yâ¯=â¯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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
B.P. Alho, P.H.O. Lopes, P.O. Ribeiro, T.S.T. Alvarenga, E.P. Nóbrega, V.S.R. de Sousa, A.M.G. Carvalho, A. Caldas, J.C.G. Tedesco, A.A. Coelho, N.A. de Oliveira, P.J. von Ranke,