期刊
SCIENTIFIC REPORTS
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-019-54635-8
关键词
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资金
- FEDER funds through the COMPETE 2020 Programme
- FCT -Portuguese Foundation for Science and Technology [POCI-01-0145-FEDER-029454, POCI-01-0145-FEDER-032527, UID/FIS/04564/2016]
- NECL [NORTE-01-0145-FEDER-022096]
- European Union Horizon -2020 research and innovation program under the Marie Sklodowska-Curie Grant [734801]
- CNPq [203180/2014-3]
- Russian Science Foundation [18-79-10176]
- FCT [SFRH/BD/88440/2012, PTDC/FISMA/31302/2017, DL57/2016, SFRH-BPD-87430/2012]
- 5 top 100 Russian Academic Excellence Project at the Immanuel Kant Baltic Federal University
- Russian Science Foundation [18-79-10176] Funding Source: Russian Science Foundation
The 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 Gd5Si2.4Ge1.6 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) 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.
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