Wireless magneto-ionics : voltage control of magnetism by bipolar electrochemistry
Ma, Zheng (Universitat Autònoma de Barcelona. Departament de Física)
Fuentes-Rodríguez, Laura (Institut de Ciència de Materials de Barcelona)
Tan, Zhengwei (Universitat Autònoma de Barcelona. Departament de Física)
Pellicer Vilà, Eva Maria (Universitat Autònoma de Barcelona. Departament de Física)
Abad, Llibertat (Institut de Microelectrònica de Barcelona)
Herrero-Martín, Javier (ALBA Laboratori de Llum de Sincrotró)
Menéndez Dalmau, Enric (Universitat Autònoma de Barcelona. Departament de Física)
Casañ Pastor, Nieves (Institut de Ciència de Materials de Barcelona)
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)

Date:	2023
Abstract:	Modulation of magnetic properties through voltage-driven ion motion and redox processes, i. e. , magneto-ionics, is a unique approach to control magnetism with electric field for low-power memory and spintronic applications. So far, magneto-ionics has been achieved through direct electrical connections to the actuated material. Here we evidence that an alternative way to reach such control exists in a wireless manner. Induced polarization in the conducting material immersed in the electrolyte, without direct wire contact, promotes wireless bipolar electrochemistry, an alternative pathway to achieve voltage-driven control of magnetism based on the same electrochemical processes involved in direct-contact magneto-ionics. A significant tunability of magnetization is accomplished for cobalt nitride thin films, including transitions between paramagnetic and ferromagnetic states. Such effects can be either volatile or non-volatile depending on the electrochemical cell configuration. These results represent a fundamental breakthrough that may inspire future device designs for applications in bioelectronics, catalysis, neuromorphic computing, or wireless communications. Conventional voltage control of magnetism relies on making direct electrical contacts to target samples. Here, wireless converse magnetoelectric actuation through bipolar electrochemistry is reported in magnetoionic transition metal nitride films.
Grants:	European Commission 861145 European Commission 101054687 Agencia Estatal de Investigación PID2020-116844RB-C21 Agencia Estatal de Investigación PDC2021-121276-C31 Agencia Estatal de Investigación RTI2018-097753-B-I00 Agencia Estatal de Investigación PID2021-123276OB-I00 Agencia Estatal de Investigación CEX2019-000917-S Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00651
Note:	Altres ajuts: European Union NextGenerationEU/PRTR (grant CNS2022-135230)
Rights:	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, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Magnetic properties and materials
Published in:	Nature communications, Vol. 14 (October 2023) , art. 6486, ISSN 2041-1723

DOI: 10.1038/s41467-023-42206-5
PMID: 37838719

10 p, 2.4 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > The ALBA Synchrotron
Articles > Research articles
Articles > Published articles