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Journal of Nanomaterials
Volume 2012, Article ID 198453, 6 pages
Research Article

Magnetostatic Interaction in Fe-Co Nanowires

1Departamento de Física, Facultad de Ciencias, Universidad de Oviedo, c/ Calvo Sotelo s/n, 33007 Oviedo, Spain
2Unidad de Membranas Nanoporosas, SCTs Campus del Cristo, 33006 Oviedo, Spain

Received 21 March 2012; Revised 23 May 2012; Accepted 23 May 2012

Academic Editor: Zhi Li Xiao

Copyright © 2012 Laura Elbaile et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Arrays of Fe-Co alloy nanowires with diameter around 35 nm and several micrometers in length have been synthesized by codepositing Fe and Co into porous anodic alumina. The morphology, structure, and magnetic properties of the nanowires (hysteresis loops and remanence curves) were characterized by SEM, TEM, X-ray diffraction (XRD), and VSM, respectively. The XRD patterns indicate that the Fe-Co nanowires present a body-centered cubic (bcc) structure and a preferred (110) orientation perpendicular to the template surface. From the hysteresis loops obtained with the magnetic field applied in the axis direction of the nanowires, we can observe that the coercive field slightly decreases when the nanowire length increases. This magnetic behaviour is analyzed considering the shape anisotropy and the dipolar interactions among nanowires.