Role of the chemical ordering on the magnetic properties of Fe–Ni cluster alloys R. A. Guirado-López, M. C. Desjonquères and D. Spanjaard Eur. Phys. J. D, 36 1 (2005) 67-78 Published online: 12 July 2005 DOI: 10.1140/epjd/e2005-00182-9