Magneto-ionic control of magnetism through voltage-driven carbon transport

Control of magnetism through voltage-driven ionic processes (i.e., magneto-ionics) holds potential for next-generation memories and computing. This stems from its non-volatility, flexibility in adjusting the magnitude and speed of magnetic modulation, and energy efficiency. Since magneto-ionics depe...

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Detalles Bibliográficos
Autores: Tan, Zhengwei, Ma, Zheng, Privitera, S., Liedke, Maciej O., Hirschmann, Eric, Wagner, Andreas, Costa Krämer, José Luis, Quintana, Alberto, García-Tort, A., Herrero Martín, Javier, Mei, Yongfeng, Chen, Xiang-Zhong, Tan, Huan, Fina, Ignasi, Sánchez Barrera, Florencio, Arredondo-López, A., Ibrahim, Fatima, Chshiev, Mairbek, Longo, E., Rovirola, M., Macià, F., Lopeandía, Aitor, Nogués, Josep, Pellicer, Eva, Sort, Jordi, Menéndez, Enric
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2026
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/425385
Acceso en línea:http://hdl.handle.net/10261/425385
https://api.elsevier.com/content/abstract/scopus_id/105029842198
Access Level:acceso abierto
Descripción
Sumario:Control of magnetism through voltage-driven ionic processes (i.e., magneto-ionics) holds potential for next-generation memories and computing. This stems from its non-volatility, flexibility in adjusting the magnitude and speed of magnetic modulation, and energy efficiency. Since magneto-ionics depends on factors like ionic radius and electronegativity, identifying alternative mobile ions is crucial to embrace new phenomena and applications. Here, the feasibility of C as a prospective magneto-ionic ion is investigated in a Fe-C system by electrolyte gating. In contrast to most magneto-ionic systems, Fe-C presents a reversible dual-ion mechanism: Fe and C act as cation and anion, respectively, moving uniformly in opposite directions under an applied electric field. This leads to a significant increase in saturation magnetization ( > 5-fold) with magneto-ionic rates larger than 1 emu·cm-3·s-1, and a 25-fold increase in coercivity. Since carbides exhibit minimal cytotoxicity, this introduces a biocompatible dimension to magneto-ionics, paving the way for the convergence of spintronics and biotechnology.

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