Abstract
Co/Pt multilayered (ML) nanowires were prepared by template-assisted pulsed electrodeposition. Structural and magnetic evolutions of the deposited ML nanowires upon annealing in a hydrogen atmosphere were studied by transmission electron microscopy, x-ray diffractometry and magnetometry. It was found that the deposited nanowires undergo a morphological change from multilayers to continuous and dense alloy wires with increasing annealing temperature. The fraction and the grain size of the f.c.t. Co–Pt ordered phase were also found to increase with annealing temperature, giving rise to a markedly enhanced magnetic performance of the annealed nanowires. Our study provides an alternative approach, apart from direct template-based electrodeposition, to the fabrication of Co–Pt alloy nanowires with tunable structures and magnetic properties.
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