Acoustic emission across the magnetostructural transition of the giant magnetocaloric Gd5Si2Ge2

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Title:	Acoustic emission across the magnetostructural transition of the giant magnetocaloric Gd5Si2Ge2
Author:	Pérez Reche, Francisco José; Casanova i Fernàndez, Fèlix; Vives i Santa-Eulàlia, Eduard; Mañosa, Lluís; Planes Vila, Antoni; Marcos, Jordi; Batlle Gelabert, Xavier; Labarta, Amílcar
Other authors:	Universitat de Barcelona
Abstract:	We report on the existence of acoustic emission during the paramagnetic-monoclinic to ferromagnetic-orthorhombic magnetostructural phase transition in the giant magnetocaloric Gd5Si2Ge2 compound. The transition kinetics have been analyzed from the detected acoustic signals. It is shown that this transition proceeds by avalanches between metastable states.
Abstract:	We report on the existence of acoustic emission during the paramagnetic-monoclinic to ferromagnetic-orthorhombic magnetostructural phase transition in the giant magnetocaloric Gd5Si2Ge2 compound. The transition kinetics have been analyzed from the detected acoustic signals. It is shown that this transition proceeds by avalanches between metastable states.
Subject(s):	-Transformacions de fase (Física estadística) -Propietats de la matèria -Magnetostricció -Phase transformations (Statistical physics) -Properties of matter -Magnetostriction
Rights:	(c) The American Physical Society, 2006
Document type:	Article Article - Published version
Published by:	The American Physical Society
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