Volume 79, Number 4, August 2007
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||25 July 2007|
Field dependence of the magnetocaloric effect in Gd and (ErDyx)Al2: Does a universal curve exist?
Departamento de Física de la Materia Condensada, ICMSE-CSIC, Universidad de Sevilla P.O. Box 1065, 41080 Sevilla, Spain
2 Ames Laboratory and Department of Materials Science and Engineering, Iowa State University Ames, IA 50011-3020, USA
Accepted: 29 June 2007
The field dependence of the magnetic entropy change of ferromagnetic lanthanide-based materials has been studied. The recently proposed master curve for the field dependence of the magnetocaloric effect of Fe-based amorphous alloys can also be constructed for these lanthanide-based crystalline materials, suggesting a universal behavior. The exponent n controlling the field dependence of the magnetic entropy change can be used for the interpretation of results in the case of multiple magnetic ordering phenomena.
PACS: 75.30.Sg – Magnetocaloric effect, magnetic cooling
© Europhysics Letters Association, 2007
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