Effect of the magnetic field on the magnetostructural phase transition in Gd5(SixGe1-x)4

All of RECERCAT

To access the full text documents, please follow this link: http://hdl.handle.net/2445/10540

Title:	Effect of the magnetic field on the magnetostructural phase transition in Gd5(SixGe1-x)4
Author:	Casanova i Fernàndez, Fèlix; Labarta, Amílcar; Batlle Gelabert, Xavier; Marcos, Jordi; Mañosa, Lluís; Planes Vila, Antoni; Brion, Sophie de
Other authors:	Universitat de Barcelona
Abstract:	The first-order magnetostructural phase transition in Gd5(SixGe12x)4 alloys with x<0.5 and the related entropy change DS are analyzed from high-field magnetization curves up to 23 T, and differential scanning calorimetry up to 5 T. The variation of the transition field Ht with the transition temperature Tt is discussed for fields up to 23 T for the x<0.5 range. From these data, the ratio dHt /dTt , which is related to the strength of the magnetoelastic coupling, is obtained as a function of x. We show that DS obtained from the ClausiusClapyeron equation and the Maxwell relation are equivalent for all compositions (0
Subject(s):	-Propietats magnètiques -Transformacions de fase (Física estadística) -Entropia -Aliatges -Camps magnètics -Magnetic properties -Phase transformations (Statistical physics) -Entropy -Alloys -Magnetic fields
Rights:	(c) The American Physical Society, 2004
Document type:	Article Article - Published version
Published by:	The American Physical Society
Share: