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

Fernandez-Pacheco, A. , Serrano-Ramón, L., Michalik, J. M., Ibarra, M. R., De Teresa, J. M., O'Brien, L., Petit, D., Lee, J. and Cowburn, R. P. (2013) Three dimensional magnetic nanowires grown by focused electron-beam induced deposition. Scientific Reports, 3, 1492. (doi: 10.1038/srep01492) (PMID:23512183) (PMCID:PMC3603301)

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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Fernandez-Pacheco, Dr Amalio
• Authors: Fernandez-Pacheco, A., Serrano-Ramón, L., Michalik, J. M., Ibarra, M. R., De Teresa, J. M., O'Brien, L., Petit, D., Lee, J., and Cowburn, R. P.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Scientific Reports
• Publisher: Nature Publishing Group
• ISSN: 2045-2322
• Copyright Holders: Copyright © 2013 Nature Publishing Group
• First Published: First published in Scientific Reports 3:1492
• Publisher Policy: Reproduced under a Creative Commons License