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Three dimensional magnetic nanowires grown by focused electron-beam induced deposition.

ABSTRACT: Control of the motion of domain walls in magnetic nanowires is at the heart of various recently proposed three-dimensional (3D) memory devices. However, fabricating 3D nanostructures is extremely complicated using standard lithography techniques. Here we show that highly pure 3D magnetic nanowires with aspect-ratios of ~100 can be grown using focused electron-beam-induced-deposition. By combining micromanipulation, Kerr magnetometry and magnetic force microscopy, we determine that the magnetisation reversal of the wires occurs via the nucleation and propagation of domain walls. In addition, we demonstrate that the magnetic switching of individual 3D nanostructures can be directly probed by magneto-optical Kerr effect.

SUBMITTER: Fernandez-Pacheco A

PROVIDER: S-EPMC3603301 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Three dimensional magnetic nanowires grown by focused electron-beam induced deposition.

Fernández-Pacheco Amalio A Serrano-Ramón Luis L Michalik Jan M JM Ibarra M Ricardo MR De Teresa José M JM O'Brien Liam L Petit Dorothée D Lee Jihyun J Cowburn Russell P RP

Scientific reports 20130101

Control of the motion of domain walls in magnetic nanowires is at the heart of various recently proposed three-dimensional (3D) memory devices. However, fabricating 3D nanostructures is extremely complicated using standard lithography techniques. Here we show that highly pure 3D magnetic nanowires with aspect-ratios of ~100 can be grown using focused electron-beam-induced-deposition. By combining micromanipulation, Kerr magnetometry and magnetic force microscopy, we determine that the magnetisat ...[more]

PMID: 23512183

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