  The interlayer spin correlations in the magnetic/non-magnetic semiconductor
superlattices are reviewed. The experimental evidences of interlayer exchange
coupling in different all-semiconductor structures, based on neutronographic
and magnetic studies, are presented. A tight-binding model is used to explain
interaction transfer across the non-magnetic block without the assistance of
carriers in ferromagnetic EuS/PbS and antiferromagnetic EuTe/PbTe systems.
