Author:
Andrade V. M.,Amirov A.,Yusupov D.,Pimentel B.,Barroca N.,Pires A. L.,Belo J. H.,Pereira A. M.,Valente M. A.,Araújo J. P.,Reis M. S.
Abstract
AbstractThe coupling between electric, magnetic and elastic features in multiferroic materials is an emerging field in materials science, with important applications on alternative solid-state cooling technologies, energy harvesting and sensors/actuators. In this direction, we developed a thorough investigation of a multiferroic composite, comprising magnetocaloric/magnetostrictive Gd$${}_{5}$$5Si$${}_{2.4}$$2.4Ge$${}_{1.6}$$1.6 microparticles blended into a piezo- and pyroelectric poly(vinylidene) fluoride (PVDF) matrix. Using a simple solvent casting technique, the formation and stabilization of PVDF electroactive phases are improved when the filler content increases from 2 to 12 weight fraction (wt.%). This effect greatly contributes to the magnetoelectric (ME) coupling, with the ME coefficient $${\alpha }_{ME}$$αME increasing from 0.3 V/cm.Oe to 2.2 V/cm.Oe, by increasing the amount of magnetic material. In addition, magnetic measurements revealed that the ME-coupling has influenced the magnetocaloric effect via a contribution from the electroactive polymer and hence leading to a multicaloric effect. These results contribute to the development of multifunctional systems for novel technologies.
Funder
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Fundação para a Cincia e a Tecnologia
NECL
H2020 Marie Skłodowska-Curie Actions
Russian Science Foundation
European Regional Development Fund
Publisher
Springer Science and Business Media LLC
Cited by
22 articles.
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