Resonant elastic scattering of polarized X-rays is a powerful technique for
the study of the magnetic properties of solids. Its recent extension to th
e soft X-ray energy range has been driven by applications in the field of a
rtificially structured magnetic devices, like multilayers and superlattices
. This article reviews recent elastic scattering experiments using synchrot
ron radiation, performed at the 2p core resonances of transition metals in
solids, thin films and ordered multilayers.