X-ray absorption analysis of sputter-grown Co/Pt stackings before and after helium irradiation T. Devolder, S. Pizzini, J. Vogel, H. Bernas, C. Chappert, V. Mathet and M. Borowski Eur. Phys. J. B, 22 2 (2001) 193-201 Published online: 15 July 2001 DOI: 10.1007/s100510170127