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Artículo
Tunable magnetocaloric effect in Gd-based glassy ribbons
dc.creator | Franco García, Victorino | |
dc.creator | Mayer, Charlotte | |
dc.creator | Gorsse, Stéphane | |
dc.creator | Ballon, Géraldine | |
dc.creator | Caballero Flores, Rafael | |
dc.creator | Chevalier, Bernard | |
dc.date.accessioned | 2016-01-29T12:15:08Z | |
dc.date.available | 2016-01-29T12:15:08Z | |
dc.date.issued | 2011 | |
dc.identifier.issn | 0021-8979 | es |
dc.identifier.uri | http://hdl.handle.net/11441/33600 | |
dc.description.abstract | The series of glassy ribbons Gd 60 M 30 In 10 ( M ¼ Mn, Co, Ni, Cu) was synthesized by melt-spinning. The change of transition element M in these Gd-based metallic glasses was proven to induce huge variations of the Curie temperature T C , magnetic entropy change peak values D S m peak , and widths at half maximum values of the magnetic entropy change d T. When M is non magnetic ( M ¼ Co, Ni, Cu), the samples behave similarly: they display high values of D S m peak (between -6.6 and -8.2 J/kg K in a magnetic field variation of 4.6 T), average d T values (between 77 and 120 K) and no magnetic hysteresis. On the contrary, when M carries a magnetic moment ( M ¼ Mn), some irrever- sibility appears at low temperature, D S m peak is lower (only 3.1 J/kg K for l 0 H ¼ 4.6 T) and the magnetic transition is very large ( d T ¼ 199 K for l 0 H ¼ 4.6 T). These features are explained by some antiparallel coupling between Mn atoms randomly located in the metallic glass. This leads to the occurrence of a cluster-glass behavior at low temperature (35 K), following the ferromagnetic transition observed at 180 K when the temperature is decreased. Also, power law fittings of D S m peak and d T versus l 0 H were performed and show that d T is less field dependent than D S m peak .We could then identify an interesting way of improving the refrigeration capacity of the material at low magnetic field. | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | AIP Publishing | es |
dc.relation.ispartof | Journal of Applied Physics , 110 (053920) | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Antiparallel coupling | es |
dc.subject | Cluster glass | es |
dc.subject | Ferromagnetic transitions | es |
dc.subject | Half maximum value | es |
dc.subject | Low magnetic fields | es |
dc.subject | Low temperatures | es |
dc.subject | Peak values | es |
dc.subject | Refrigeration capacity | es |
dc.title | Tunable magnetocaloric effect in Gd-based glassy ribbons | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física de la Materia Condensada | es |
dc.relation.publisherversion | 10.1063/1.3632983 | es |
dc.identifier.doi | http://dx.doi.org/10.1063/1.3632983 | es |
dc.identifier.idus | https://idus.us.es/xmlui/handle/11441/33600 |
Ficheros | Tamaño | Formato | Ver | Descripción |
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Turnable magnetocaloric.pdf | 2.293Mb | [PDF] | Ver/ | |