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Title: | Magnetic coupling between Gd and Pr ions and magnetocaloric effect in Gd0.5Pr0.5Al2 compound. |
Authors: | Carvalho, Alexandre Magnus Gomes Garcia, Flávio Sousa, Vinícius da Silva Ramos de Perlingeiro, Pedro Jorge von Ranke Rocco, Daniel Leandro Carvalho, Edson José de Coelho, Adelino de Aguiar Silva, Luzeli Moreira da Gandra, Flavio Cesar Guimarães |
Keywords: | Rare-earth alloy X-ray magnetic circulardi chroism Ferrimagnetism Magnetocaloriceffect |
Issue Date: | 2009 |
Citation: | CARVALHO, A. M. G. et al. Magnetic coupling between Gd and Pr ions and magnetocaloric effect in Gd0.5Pr0.5Al2 compound. Journal of Magnetism and Magnetic Materials, v. 321, p. 3014-3018, 2009. Disponível em: <https://www.infona.pl/resource/bwmeta1.element.elsevier-e7b47cb0-e24a-377b-96e6-4252bffb91ce>. Acesso em: 07 ago. 2016. |
Abstract: | In this work, we report the theoretical and experimental investigations on the magnetic and magnetocaloric properties for Gd 0.5 Pr 0.5 Al 2 compound in different magnetic fields. The magnetization features indicate that Gd 0.5 Pr 0.5 Al 2is ferrimagnetic at low temperatures. We also present data from X-ray magnetic circular dichroism (XMCD) experiments for this compound, with which we have confirmed that the magnetic moments of the Pr ions are antiparallel to the magnetic moments of the Gd ions. The magnetocaloric parameters, ΔT S and ΔS T , were obtained from calorimetric data and both curves present normal and inverse magnetocaloric effect. A theoretical model for ferrimagnetic coupling, including the crystalline electrical field anisotropy, was used to describe the ΔT S and ΔS Texperimental results. |
URI: | http://www.repositorio.ufop.br/handle/123456789/7029 |
metadata.dc.identifier.doi: | http://dx.doi.org/10.1016%2Fj.jmmm.2009.04.068 |
ISSN: | 0304-8853 |
metadata.dc.rights.license: | O periódico Journal of Magnetism and Magnetic Materials concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3934301067962. |
Appears in Collections: | DEFIS - Artigos publicados em periódicos |
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ARTIGO_MagneticCoupligBetween.pdf | 547,01 kB | Adobe PDF | View/Open |
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