Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/10525
Title: | Magnetic field induced entropy change and magnetoelasticity in Ni-Mn-Ga alloys |
Author: | Marcos, Jordi Planes Vila, Antoni Mañosa, Lluís Casanova i Fernàndez, Fèlix Batlle Gelabert, Xavier Labarta, Amílcar Martínez Benjamin, Joan Josep |
Keywords: | Transformacions martensítiques Magnetostricció Entropia Aliatges Materials ferromagnètics Martensitic transformations Magnetostriction Entropy Alloys Ferromagnetic materials |
Issue Date: | 2002 |
Publisher: | The American Physical Society |
Abstract: | The magnetocaloric effect that originates from the martensitic transition in the ferromagnetic Ni-Mn-Ga shape-memory alloy is studied. We show that this effect is controlled by the magnetostructural coupling at both the martensitic variant and magnetic domain length scales. A large entropy change induced by moderate magnetic fields is obtained for alloys in which the magnetic moment of the two structural phases is not very different. We also show that this entropy change is not associated with the entropy difference between the martensitic and the parent phase arising from the change in the crystallographic structure which has been found to be independent of the magnetic field within this range of fields. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.66.224413 |
It is part of: | Physical Review B, 2002, vol. 66, núm. 22, p. 224413(1)-224413(6) |
URI: | http://hdl.handle.net/2445/10525 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.66.224413 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Física de la Matèria Condensada) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
504146.pdf | 90.12 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.