Arrays of Ni nanowires electrodeposited into self-aligned and randomly disordered titania nanotube arrays grown by anodization process are investigated by X-ray diffraction, SEM, rf-GDOES and VSM magnetometry. The titania nanotube outer diameter is about 160nm, wall thickness ranging from 60 to 70nm and 300nm in depth. The so-obtained Ni nanowires reach above 100nm diameter and 240nm length, giving rise to coercive fields of 98 and 200Oe in the perpendicular or parallel to the nanowires axis hysteresis loops, respectively. The formation of magnetic vortex domain states is also discussed.