Coherent X-ray-scattering measurements were performed in the type-I antifer
romagnetic phase of UAs at the M-IV uranium absorption edge. Speckle patter
ns from a magnetic reflection were followed up through the magnetic transit
ion. The origin of the speckles is discussed in terms of antiferromagnetic
domain configuration and fluctuations. (C) 2001 Elsevier Science B.V. All r
ights reserved.