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| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2503.11337 |
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| _version_ | 1866912274604621824 |
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| author | Tan, Zhengwei Ma, Zheng Privitera, Simone Liedke, Maciej Oskar Hirschmann, Eric Wagner, Andreas Costa-Krämer, José L. Quintana, Alberto Garcia-Tort, Aina Herrero-Martín, Javier Tan, Huan Fina, Ignasi Sánchez, Florencio Lopeandia, Aitor F. Nogués, Josep Pellicer, Eva Sort, Jordi Menéndez, Enric |
| author_facet | Tan, Zhengwei Ma, Zheng Privitera, Simone Liedke, Maciej Oskar Hirschmann, Eric Wagner, Andreas Costa-Krämer, José L. Quintana, Alberto Garcia-Tort, Aina Herrero-Martín, Javier Tan, Huan Fina, Ignasi Sánchez, Florencio Lopeandia, Aitor F. Nogués, Josep Pellicer, Eva Sort, Jordi Menéndez, Enric |
| contents | 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 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 7-fold increase in saturation magnetization 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_11337 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Carbon magneto-ionics: Control of magnetism through voltage-driven carbon transport Tan, Zhengwei Ma, Zheng Privitera, Simone Liedke, Maciej Oskar Hirschmann, Eric Wagner, Andreas Costa-Krämer, José L. Quintana, Alberto Garcia-Tort, Aina Herrero-Martín, Javier Tan, Huan Fina, Ignasi Sánchez, Florencio Lopeandia, Aitor F. Nogués, Josep Pellicer, Eva Sort, Jordi Menéndez, Enric Materials Science 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 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 7-fold increase in saturation magnetization 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. |
| title | Carbon magneto-ionics: Control of magnetism through voltage-driven carbon transport |
| topic | Materials Science |
| url | https://arxiv.org/abs/2503.11337 |