Arrays of face-centred cubic (fee) CoPt (0.45 <x <0.55) nanowires were electrodeposited into thin film nanoporous alumina supported on a Si substrate. The heat treatment under specific conditions was then carried out in order to transform the fee phase into the face-centred tetragonal or L1 ordered phase. The influence of both the phase transition and the temperature on the magnetic properties of Co Pt nanowires has been studied. Coercive fields higher than 1 T (10kOe) have been obtained at room temperature with ordered nanowires, 80 nm in diameter.
Journal of Physics D: Applied Physics, 2005, Vol 38, Issue 6, p. 909-914