The magnetic Co nanowire arrays, Cu nanowire arrays, Co nanotube arrays, Co nanoparticle arrays and Co/Cu multilayered nanowire arrays were prepared by electrochemical deposition into the nanoporous anodic alumina oxide (AAO) templates. The morphology, structure and magnetic properties of the nanowires were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and Giant-Magnetoresistance (GMR) properti...