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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/2503.11405 |
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| _version_ | 1866915198316576768 |
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| author | Ma, Zheng Kantre, Karim-Alexandros Tan, Huan Liedke, Maciej O. Herrero-Martín, Javier Hirschmann, Eric Wagner, Andreas Quintana, Alberto Pellicer, Eva Nogués, Josep Meersschaut, Johan Sort, Jordi Menéndez, Enric |
| author_facet | Ma, Zheng Kantre, Karim-Alexandros Tan, Huan Liedke, Maciej O. Herrero-Martín, Javier Hirschmann, Eric Wagner, Andreas Quintana, Alberto Pellicer, Eva Nogués, Josep Meersschaut, Johan Sort, Jordi Menéndez, Enric |
| contents | Voltage control of magnetism via magneto-ionics, where ion transport and/or redox processes drive magnetic modulation, holds great promise for next-generation memories and computing. This stems from its non-volatility and ability to precisely tune both the magnitude and speed of magnetic properties in an energy-efficient manner. However, expanding magneto-ionics to incorporate novel mobile ions or even multiple ion species is crucial for unlocking new phenomena and enabling multifunctional capabilities. Here, we demonstrate voltage-driven multi-ion transport in a FeBO system with increasing oxygen content, progressively transitioning from an electrostatic-like response to a more pronounced electrochemical (magneto-ionic) behavior. The voltage-driven transport of both B and Fe is activated by oxidation state tuning, owing to the larger electronegativity of oxygen. Such charge-transfer effects allow multi-ion magneto-ionics, where O ions move oppositely to Fe and B ions. These results pave the way for programmable functionalities by leveraging elements with different electron affinities through charge-transfer engineering. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_11405 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Charge-transfer-mediated boron magneto-ionics: Towards voltage-driven multi-ion transport Ma, Zheng Kantre, Karim-Alexandros Tan, Huan Liedke, Maciej O. Herrero-Martín, Javier Hirschmann, Eric Wagner, Andreas Quintana, Alberto Pellicer, Eva Nogués, Josep Meersschaut, Johan Sort, Jordi Menéndez, Enric Materials Science Voltage control of magnetism via magneto-ionics, where ion transport and/or redox processes drive magnetic modulation, holds great promise for next-generation memories and computing. This stems from its non-volatility and ability to precisely tune both the magnitude and speed of magnetic properties in an energy-efficient manner. However, expanding magneto-ionics to incorporate novel mobile ions or even multiple ion species is crucial for unlocking new phenomena and enabling multifunctional capabilities. Here, we demonstrate voltage-driven multi-ion transport in a FeBO system with increasing oxygen content, progressively transitioning from an electrostatic-like response to a more pronounced electrochemical (magneto-ionic) behavior. The voltage-driven transport of both B and Fe is activated by oxidation state tuning, owing to the larger electronegativity of oxygen. Such charge-transfer effects allow multi-ion magneto-ionics, where O ions move oppositely to Fe and B ions. These results pave the way for programmable functionalities by leveraging elements with different electron affinities through charge-transfer engineering. |
| title | Charge-transfer-mediated boron magneto-ionics: Towards voltage-driven multi-ion transport |
| topic | Materials Science |
| url | https://arxiv.org/abs/2503.11405 |