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dc.contributor.authorCasanova i Fernàndez, Fèlixcat
dc.contributor.authorLabarta, Amílcarcat
dc.contributor.authorBatlle Gelabert, Xaviercat
dc.contributor.authorMarcos, Jordicat
dc.contributor.authorMañosa, Lluíscat
dc.contributor.authorPlanes Vila, Antonicat
dc.contributor.authorBrion, Sophie decat
dc.description.abstractThe 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<x<0.5), provided the Maxwell relation is evaluated only within the transition region. The T and H dependences of DS are accounted for by modeling the T and H dependences of the magnetization outside the transition.-
dc.publisherThe American Physical Societyeng
dc.relation.isformatofReproducció digital del document publicat en format paper, proporcionada per PROLA i
dc.relation.ispartofPhysical Review B, 2004, vol. 69, núm. 10, p. 104416-1-104416-7eng
dc.rights(c) The American Physical Society, 2004eng
dc.subject.classificationPropietats magnètiquescat
dc.subject.classificationTransformacions de fase (Física estadística)cat
dc.subject.classificationCamps magnèticscat
dc.subject.otherMagnetic propertieseng
dc.subject.otherPhase transformations (Statistical physics)eng
dc.subject.otherMagnetic fieldseng
dc.titleEffect of the magnetic field on the magnetostructural phase transition in Gd5(SixGe1-x)4eng
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Física de la Matèria Condensada)

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