  We report results of a magnetic characterization of
[Cu$_{30}$Ni$_{70}$(6nm)]$_{20}$ (x=1-7nm) superlattices using Polarized
Neutron Reflectometry (PNR) and SQUID magnetometry. The study has shown that
the magnetic moment of the structures growths almost linearly from H = 0 to
H$_{sat}$ = 1.3kOe which is an indirect evidence of antiferromagnetic (AF)
coupling of the magnetic moments in neighbouring layers. PNR, however, did not
detect any in-plane AF coupling. Taking into account the out-of-plane easy axis
of the Cu$_{30}$Ni$_{70}$ layers, this may mean that only the out-of-plane
component of the magnetic moments are AF coupled.
