Voltage-controlled on switching and manipulation of magnetization via the redox transformation of β-FeOOH nanoplatelets
Nichterwitz M, Neitsch S, Roeher S, Wolf D, Nielsch K, Leistner K (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 53
Article Number: 084001
Journal Issue: 8
Abstract
Redox-based metal/metal oxide transformations achieved via electrolytic gating recently emerged as a novel, magneto-ionic route for voltage control of magnetism. So far, mainly metal or oxide thin films and nanoporous metal alloy structures are used as starting materials. The present study demonstrates a magneto-ionic transformation starting from a stable electrodeposited FeOOH nanoplatelet structure. The application of a low voltage in a Li-based electrolyte results in the reduction of the virtually non-magnetic FeOOH into ferromagnetic Fe, yielding an ON switching of magnetization. The magnetization can be tuned in a large range by the time of voltage application and remains stable after voltage-switch off. A reversible magneto-ionic change of magnetization of up to 15% is achieved in the resulting iron films with a thickness of about 30 nm. This large magneto-ionic effect is attributed to the enhanced roughness of the iron films obtained from the nanoplatelet structure. The robust, voltage-controlled, and non-volatile ON switching of magnetism starting from a stable oxide structure is promising for the development of energy-efficient magnetic switches, magnetic actuation and may offer new avenues in magnetoelectronic devices.
Involved external institutions
Germany (DE)How to cite
APA:
Nichterwitz, M., Neitsch, S., Roeher, S., Wolf, D., Nielsch, K., & Leistner, K. (2020). Voltage-controlled on switching and manipulation of magnetization via the redox transformation of β-FeOOH nanoplatelets. Journal of Physics D: Applied Physics, 53(8). https://doi.org/10.1088/1361-6463/ab5bca
MLA:
Nichterwitz, Martin, et al. "Voltage-controlled on switching and manipulation of magnetization via the redox transformation of β-FeOOH nanoplatelets." Journal of Physics D: Applied Physics 53.8 (2020).
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