Abstract
Highly ordered Fe-Pt nanowire arrays were fabricated using anodic aluminum oxide templates by pulse DC electrodeposition. The influences of pulse ratio and frequency on the microstructural and magnetical properties of Fe-Pt nanowire arrays have been studied. The composition of Fe-Pt nanowires can be adjusted by pulse ratio and the crystallization of wires can be modified by pulse frequency. By choosing an optimal pulse ratio and pulse frequency, the Fe-Pt nanowire arrays with out-of plane coercivity up to 1620 Oe can be achieved. Annealing of Fe-Pt nanowire arrays could improve the crystallinity of wires and accordingly enhance the coercivity.
Acknowledgments
The authors acknowledge the National Nature Science Foundation of China (NSFC 50801023, 51001044), Educational Commission of Hubei Province of China (D20091008) and Scientific Research Foundation for the Returned Overseas Chinese Scholars (SRF for ROCS, SEM) for financial support.