The critical scattering of a Ni single crystal has been investigated by mea
ns of small-angle neutron scattering (SANS) below the ferromagnetic transit
ion. The data have been interpreted with a recent mode-coupling theory that
includes the dipolar interactions. The explicit susceptibility of the para
llel fluctuations as well as the influence of dipolar interactions have bee
n taken into account. (C) 2000 Elsevier Science B.V. AII rights reserved.