The magnetopyroelectric effect : heat-mediated magnetoelectricity in magnetic nanoparticle-ferroelectric polymer composites
Llacer-Wintle, Joaquin (ETH Zürich. Institute of Robotics and Intelligent Systems)
Renz, Jan (ETH Zürich. Institute of Robotics and Intelligent Systems)
Hertle, Lukas (ETH Zürich. Institute of Robotics and Intelligent Systems)
Veciana, Andrea (ETH Zürich. Institute of Robotics and Intelligent Systems)
von Arx, Denis (ETH Zürich. Institute of Robotics and Intelligent Systems)
Wu, Jiang (ETH Zürich. Institute of Robotics and Intelligent Systems)
Bruna, Pere (Universitat Politècnica de Catalunya. Departament de Física)
Vukomanovic, Marija (Jožef Stefan Institute. Advanced Materials Department)
Puigmarti-Luis, Josep (Institut de Química Teòrica i Computacional. Departament de Ciència dels Materials i Química Física)
Nelson, Bradley J. (ETH Zürich. Institute of Robotics and Intelligent Systems)
Chen, Xiang-Zhong (ETH Zürich. Institute of Robotics and Intelligent Systems)
Pané i Vidal, Salvador (ETH Zürich. Institute of Robotics and Intelligent Systems)

Data:	2023
Resum:	Magnetoelectricity enables a solid-state material to generate electricity under magnetic fields. Most magnetoelectric composites are developed through a strain-mediated route by coupling piezoelectric and magnetostrictive phases. However, the limited availability of high-performance magnetostrictive components has become a constraint for the development of novel magnetoelectric materials. Here, we demonstrate that nanostructured composites of magnetic and pyroelectric materials can generate electrical output, a phenomenon we refer to as the magnetopyroelectric (MPE) effect, which is analogous to the magnetoelectric effect in strain-mediated composite multiferroics. Our composite consists of magnetic iron oxide nanoparticles (IONPs) dispersed in a ferroelectric (and also pyroelectric) poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) matrix. Under a high-frequency low-magnitude alternating magnetic field, the IONPs generate heat through hysteresis loss, which stimulates the depolarization process of the pyroelectric polymer. This magnetopyroelectric approach creates a new opportunity to develop magnetoelectric materials for a wide range of applications.
Ajuts:	European Commission 771565 European Commission 861145 Agencia Estatal de Investigación PID2020-112975GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-42 European Commission 677020 Agencia Estatal de Investigación PID2020-116612RB-C33
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Ferroelectric polymers ; Generate electricity ; Magnetic-field ; Magnetoelectric composites ; Magnetoelectric materials ; Nanostructured composites ; Performance ; Piezoelectric ; Polymer composite ; Solid-state materials
Publicat a:	Materials Horizons, Vol. 10, Issue 7 (April 2023) , p. 2627-2637, ISSN 2051-6355

DOI: 10.1039/d2mh01361d
PMID: 37185815

11 p, 3.6 MB

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