Nanoscale characterisation and magnetic properties of Co81Cu19/Cu multilayer nanowires

Zhang, J; Ma, H; Zhang, S; Zhang, H; Deng, X; Lan, Q; Xue, D; Bai, F; Mellors, NJ; Peng, Y

Abstract

Bamboo-like CoCu/Cu multilayer nanowires have been successfully fabricated into anodic aluminium oxide templates using an electrodeposition method, and their chemistry and crystal structure have been characterised at the nanoscale. Energy-dispersive X-ray analysis indicated that the chemical composition of the regular periodic CoCu/Cu nanowires was Co81Cu19/Cu. Diffraction analysis revealed that Cu layers and Co-rich layers exhibited polycrystalline fcc structures. A twin relationship of Cu layer {111} planes stacking on Co81Cu19 layer {111} planes was observed at the lattice-resolution level. The magnetic properties analysed by experimental and theoretical simulations showed that there was a transition from a curling rotation mode to coherent rotation mode in our Co81Cu19/Cu multilayer nanowires when the angle between external field and nanowire length axis increased from 0° to 90°. This study highlights the basic morphological, chemical, structural information and magnetic reversal mechanism of CoCu/Cu nanowires, which are critical for the applications of multilayer nanowires in nanoscale sensors and electronics.

Citation

Zhang, J., Ma, H., Zhang, S., Zhang, H., Deng, X., Lan, Q., …Peng, Y. (2014). Nanoscale characterisation and magnetic properties of Co81Cu19/Cu multilayer nanowires. Journal of Materials Chemistry C, 3(1), 85-93. https://doi.org/10.1039/C4TC01510J

• Journal Article Type: Article
• Acceptance Date: Oct 14, 2014
• Online Publication Date: Oct 20, 2014
• Publication Date: Oct 20, 2014
• Deposit Date: Apr 29, 2015
• Journal: J. Mater. Chem. C
• Print ISSN: 2050-7526
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 3
• Issue: 1
• Pages: 85-93
• DOI: https://doi.org/10.1039/C4TC01510J
• Publisher URL: http://dx.doi.org/10.1039/C4TC01510J
• Additional Information: Funders : Funder not known