title: Small-angle neutron scattering of nanocrystalline terbium with random paramagnetic susceptibility.
abstract: 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.
authors.affiliation: Forschungszentrum Karlsruhe, Institut für Nanotechnologie, Kalrsruhe, Germany. balaji_mag@yahoo.com
authors.forename: G
authors.initials: G
authors.lastname: Balaji
authors.forename: S
authors.initials: S
authors.lastname: Ghosh
authors.forename: F
authors.initials: F
authors.lastname: Döbrich
authors.forename: H
authors.initials: H
authors.lastname: Eckerlebe
authors.forename: J
authors.initials: J
authors.lastname: Weissmüller