Mechanism of localization of the magnetization reversal in 3 nm wide Co nanowires

Mechanism of localization of the magnetization reversal in 3 nm wide Co nanowires

The mechanism of magnetization reversal has been studied in a model system of self-assembled cobalt nanowires with a 3 nm diameter. The structure, orientation and size of grains within the nanowires could be determined by high resolution transmission electron microscopy. The magnetic properties were...

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Veröffentlicht in:Physical review letters 2012-09, Vol.109 (11), p.117205-117205, Article 117205
Hauptverfasser: Vidal, F, Zheng, Y, Schio, P, Bonilla, F J, Barturen, M, Milano, J, Demaille, D, Fonda, E, de Oliveira, A J A, Etgens, V H
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container_end_page 117205
container_issue 11
container_start_page 117205
container_title Physical review letters
container_volume 109
creator Vidal, F
Zheng, Y
Schio, P
Bonilla, F J
Barturen, M
Milano, J
Demaille, D
Fonda, E
de Oliveira, A J A
Etgens, V H
description The mechanism of magnetization reversal has been studied in a model system of self-assembled cobalt nanowires with a 3 nm diameter. The structure, orientation and size of grains within the nanowires could be determined by high resolution transmission electron microscopy. The magnetic properties were probed using static and dynamic magnetization measurements. Micromagnetic modeling based on the structural analysis allows us to correlate the structure and the magnetic behavior of the wires, revealing competition between shape anisotropy, magnetocrystalline anisotropy and exchange in the localized reversal within Co hcp oriented grains. These results provide direct experimental evidence of the link between anisotropy fluctuations and reversal localization in nanowires.
doi_str_mv 10.1103/PhysRevLett.109.117205
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Physics
title Mechanism of localization of the magnetization reversal in 3 nm wide Co nanowires
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