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