| Autor: |
De H-Óra, M, Nicolenco, A, Monalisha, P, Maity, T, Zhu, B, Lee, S, Sun, Z, Sort, J, MacManus-Driscoll, J |
| Přispěvatelé: |
de h-Óra, M [0000-0002-2070-0755], Monalisha, P [0000-0002-3299-1254], Zhu, B [0000-0001-5601-6130], Sort, J [0000-0003-1213-3639], MacManus-Driscoll, J [0000-0003-4987-6620], Apollo - University of Cambridge Repository |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
APL Materials. 11 |
| ISSN: |
2166-532X |
| DOI: |
10.1063/5.0147665 |
| Popis: |
Tuning the properties of magnetic materials by voltage-driven ion migration (magneto-ionics) gives potential for energy-efficient, non-volatile magnetic memory and neuromorphic computing. Here, we report large changes in the magnetic moment at saturation (mS) and coercivity (HC), of 34% and 78%, respectively, in an array of CoFe2O4 (CFO) epitaxial nanopillar electrodes (∼50 nm diameter, ∼70 nm pitch, and 90 nm in height) with an applied voltage of −10 V in a liquid electrolyte cell. Furthermore, a magneto-ionic response faster than 3 s and endurance >2000 cycles are demonstrated. The response time is faster than for other magneto-ionic films of similar thickness, and cyclability is around two orders of magnitude higher than for other oxygen magneto-ionic systems. Using a range of characterization techniques, magnetic switching is shown to arise from the modulation of oxygen content in the CFO. Also, the highly cyclable, self-assembled nanopillar structures were demonstrated to emulate various synaptic behaviors, exhibiting non-volatile, multilevel magnetic states for analog computing and high-density storage. Overall, CFO nanopillar arrays offer the potential to be used as interconnected synapses for advanced neuromorphic computing applications. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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