Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/112143
Title: Nanostructuring as a Procedure to Control the Field Dependence of the Magnetocaloric Effect
Authors: Doblas, D.
Moreno-Ramírez, L. M.
Franco, V.
Conde, A.
Svalov, A. V.
Kurlyandskaya, G. V.
Issue Date: 2017
Publisher: Elsevier Ltd
Elsevier BV
Citation: Nanostructuring as a Procedure to Control the Field Dependence of the Magnetocaloric Effect / D. Doblas, L. M. Moreno-Ramírez, V. Franco et al. // Materials and Design. — 2017. — Vol. 114. — P. 214-219.
Abstract: In this work, the field dependence of the magnetocaloric effect of Gd bulk samples has been enhanced through nanostructuring of the material. Nanostructuring consists in multilayers preparation by alternative rf-sputtering deposition of Gd layers and Ti spacers onto glass substrates. The results obtained for the multilayers were compared to those obtained for the Gd bulk. Assuming a power law for the field dependence of the magnetic entropy change (ΔSM ∝ Hn), higher field dependences close to the transition in a wider temperature range are obtained for the multilayer material (n = 1.0) with respect to the bulk counterpart (n = 0.78). The effect of a Curie temperature distribution in the multilayer material (due to variations of the layer thickness) has been studied through numerical simulations to explain the observed field dependence of the magnetocaloric effect, obtaining a remarkable agreement between experiments and results. © 2016 Elsevier Ltd.
Keywords: CURIE TEMPERATURE DISTRIBUTION
FINITE SIZE SCALING
MAGNETIC ENTROPY CHANGE
MAGNETIC MULTILAYERS
MAGNETOCALORIC EFFECT
CURIE TEMPERATURE
ENTROPY
MAGNETIC MULTILAYERS
MAGNETISM
MULTILAYERS
SUBSTRATES
TEMPERATURE DISTRIBUTION
BULK COUNTERPART
FIELD DEPENDENCE
FINITE SIZE SCALING
GLASS SUBSTRATES
MAGNETIC ENTROPY CHANGE
MULTILAYER MATERIALS
RF SPUTTERING DEPOSITION
TEMPERATURE RANGE
MAGNETOCALORIC EFFECTS
URI: http://hdl.handle.net/10995/112143
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85006070799
PURE ID: 1380564
ISSN: 0264-1275
metadata.dc.description.sponsorship: This work was supported by the Spanish MINECO and EU- FEDER (projects MAT2013-45165-P and MAT2016-77265-R ), the PAI of the Regional Government of Andalucía, and the Ministry of Education and Science of the Russian Federation (Project No. 2582 ). L.M. Moreno-Ramírez acknowledges a FPU fellowship from the Spanish MECD. Selected measurements were performed at SGIker service of UPV-EHU. We thank A. Larrañaga for excellent technical support.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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