Please use this identifier to cite or link to this item:
https://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 |
Keywords: | Propietats magnètiques Transformacions de fase (Física estadística) Entropia Aliatges Camps magnètics Magnetic properties Phase transformations (Statistical physics) Entropy Alloys Magnetic fields |
Issue Date: | 2004 |
Publisher: | The American Physical Society |
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<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. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.69.104416 |
It is part of: | Physical Review B, 2004, vol. 69, núm. 10, p. 104416-1-104416-7 |
URI: | https://hdl.handle.net/2445/10540 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.69.104416 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Física de la Matèria Condensada) |
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