The magnetic behavior of thin layers of Cr in Fe/Cr/Fe(001) trilayers and s
uperlattices is studied using the first principles self-consistent RS-LMTO-
ASA (real space - linear muffin-tin orbital - atomic sphere approximation)
method. The effects of lattice compression and interface mixing are investi
gated, and it is shown that they can cause large reductions of the Cr magne
tic moments. [S0163-1829(99)12625-0].