Título:
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Scaling of the entropy change at the magnetoelastic transition in Gd5(SixGe1-x)4
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Autor/a:
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Casanova i Fernàndez, Fèlix; Batlle Gelabert, Xavier; Labarta, Amílcar; Marcos, Jordi; Mañosa, Lluís; Planes Vila, Antoni
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Otros autores:
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Universitat de Barcelona |
Abstract:
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Differential scanning calorimetry under a magnetic field H has been used to measure the entropy change DS
at the magnetoelastic transition in Gd5(SixGe12x)4 alloys, for x<0.5. We show that DS scales with the
transition temperature, Tt , which is tuned by x and H, from 70 to 310 K. Such a scaling demonstrates that Tt
is the relevant parameter in determining the giant magnetocaloric effect in these alloys, and proves that the
magnetovolume effects due to H are of the same nature as the volume effects caused by substitution |
Materia(s):
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-Entropia -Magnetostricció -Materials ferromagnètics -Aliatges -Entropy -Magnetostriction -Ferromagnetic materials -Alloys |
Derechos:
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(c) The American Physical Society, 2002
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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The American Physical Society
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