The blocking temperature T-B and the Neel temperature of the antiferromagne
t, T-N, are compared in exchange-biased Fe3O4/CoO. Neutron diffraction show
s that the observed reduction iii T-B for CoO layer thicknesses < 90 Angstr
om is not due to the reduction of T-N of these layers. (C) 2000 Elsevier Sc
ience B.V. All rights reserved.