Veranstaltungen
09. Dezember 2025, 16:00 bis 17:00
Jordi Sort, ICREA Professor, Physics Department, Autonomous University of Barcelona, Spain
Seminar
Magneto-ionics –voltage-driven modulation of magnetic properties via electric-field-induced ion transport– offers a pathway toward low-power, analog magnetic memories and computing. Extending beyond conventional oxygen or lithium systems, this work introduces nitrogen magneto-ionics, where nitrogen ions migrate in transition metal nitrides (e.g., CoN, FeN, CoMnN, FeCoN) at room temperature using liquid or solid electrolytes [1–6]. These materials display tunable ferromagnetic, paramagnetic, and antiferromagnetic phases governed by alloy composition and nitrogen content [4]. Unlike oxygen-based systems, nitrogen transport proceeds through a uniform plane-wave-like front, favorable for multilayer memory architectures. We demonstrate voltage-driven magnetic switching with good reversibility, as well as neuromorphic behaviors such as synaptic potentiation/depression, and spike-timing-dependent plasticity [5]. Wireless control can be achieved via bipolar electrochemistry [3]. Finally, nanoscale patterning reveals new voltage-controlled magnetic states, including magneto-ionic vortex configurations in FeCoN disks [6]. These advances position nitrogen magneto-ionics as a promising platform for energy-efficient, secure, and brain-inspired computing.
This work is supported by the European Research Council (grant no. 101054687) and the Spanish State Research Agency (project no. PID2020-116844RB-C21).
1. J. de Rojas et al., Nat. Commun., 11 (2020) 5871.
2. Z. Tan et al., Mater. Horiz., 10 (2023) 88.
3. Z. Ma et al., Nat. Commun., 14 (2023) 6486.
4. N. López-Pintó et al, Adv. Funct. Mater. 15 (2024) 2404487.
5. P. Monalisha et al., Adv. Electron. Mater. 9 (2023) 2300249.
6. I. Spasojevic et al., Nat. Commun., 16 (2025) 1990.
Veranstaltung Details
- Veranstaltungsort
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SEM.R. DB gelb 05 B
1040 Wien
Wiedner Hauptstraße 8-10/E134 - Veranstalter
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IAP
Manuela Marik
marik@iap.tuwien.ac.at - Öffentlich
- Ja
- Kostenpflichtig
- Nein
- Anmeldung erforderlich
- Nein