Quantitative roughness of sputtered Fe-Cr superlattices M. E. Gómez, J. Santamaria, M. C. Cyrille, E. C. Nelson, K. M. Krishnan and I. K. Schuller Eur. Phys. J. B, 30 1 (2002) 17-23 Published online: 19 November 2002 DOI: 10.1140/epjb/e2002-00353-0