%0 journal article %@ 0031-9007 %A Balaji, G.,Ghosh, S.,Doebrich, F.,Eckerlebe, H.,Weissmueller, J. %D 2008 %J Physical Review Letters %N 22 %P 227202 %R doi:10.1103/PhysRevLett.100.227202 %T Small-Angle Neutron Scattering of Nanocrystalline Terbium with Random Paramagnetic Susceptibility %U https://doi.org/10.1103/PhysRevLett.100.227202 22 %X We report magnetic small-angle neutron scattering (SANS) data for the nanocrystalline rare earth metal Terbium in its paramagnetic state. Whereas critical scattering dominates at large momentum transfer, q, the (magnetic-) field response of the scattering at small q arises from the spatial nonuniformity of the paramagnetic susceptibility tensor. The finding of an interrelation between SANS and the susceptibility suggests a way for characterizing the nonuniform magnetic interactions in hard magnets by neutron scattering.