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Magnetocaloric effect in random magnetic anisotropy materials
Bohigas i Janoher, Xavier (Universitat Politècnica de Catalunya. Departament Física i Enginyeria Nuclear)
Tejada, J. (Universitat de Barcelona. Departament Física Fonamental)
Torres Canals, Francisco (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Arnaudas, José Ignacio (Universidad de Zaragoza. Departament Física de la Materia Condensada)
Joven, Enrique (Universidad de Zaragoza. Departament Física de la Materia Condensada)
Del Moral, Agustín (Universidad de Zaragoza. Departament Física de la Materia Condensada)
American Physical Society

Date: 2002
Abstract: In this letter we report the results of entropy variations in random anisotropy magnets composed of TbxY1−xAl2, with x=0. 15, 0. 20, 0. 25, 0. 35, 0. 40, and 0. 50. We discovered large entropy variation associated with the spin glass to paramagnetictransition. Both temperature transition and entropy changes were studied at different temperatures and with different compositions. Our conclusion is that these materials are suitable candidates for use as magnetic refrigerants in a temperature range below 40 K.
Rights: Tots els drets reservats.
Language: Anglès.
Document: article ; recerca ; publishedVersion
Subject: Entropy ; Glass transitions ; Magnetic anisotropy ; Magnetic materials ; Curie point ; Magnetocaloric effect ; Paramagnetism ; Spin glass models
Published in: Applied Physics Letters, Vol. 81, Issue 13 (September 2002) , p. 2427-2429, ISSN 1077-3118

DOI: 10.1063/1.1506777


4 p, 376.6 KB

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Articles > Research articles
Articles > Published articles

 Record created 2014-02-25, last modified 2019-02-03



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