Abstract: An ordered Cu/Ni multilayered nanowires array was electrodeposited into the pores of an anodic aluminum oxide ( AAO ) template, with layer thickness in the range of 3 to 100 nm. In order to avoid codeposition of Cu in the Ni layers, two separate Ni and Cu baths have been used. Scanning electronic microscopy ( SEM ), transmission electron microscopy ( TEM ) were used to characterize the morphology of Cu/Ni multilayered nanowires array. The results show that the layer thicknesses are very uniform and the multilayered structure is clear and regular. The diameter of nanowire is about 100nm, which corresponds to the pore size of the AAO template used. Selected-area electron diffraction ( SAED ) result demonstrates that those multiplayer wires exhibit single crystal structures. Hysteresis curves for multilayered Cu/Ni nanowires array with the AAO membrane support were tested by using vibrating sample magnetometer ( VSM ) at room temperature ( 293 K ). It is found that Cu/Ni nanowires alloys have a strong perpendicular magnetic field anisotropy. When the magnetic field is perpendicular or parallel to the AAO template used, the squareness are 0.701 or 0.101 and the coercivity is 589 Oe or 202 Oe respectively. The diameter and the layer thickness of Cu/Ni multilayered wires could be changed according to demands by adjusting the technologic parameters of anodization and electrodeposition.

Key words: Dual bath, Electrodeposition, Cu/Ni, Multilayered nanowires, Ordered array