NEUTRON-SCATTERING AND MAGNETIZATION CLOUDS IN DILUTE PD BASED ALLOYS

Neutron scattering data for dilute PdMn, PdCo, and PdFe alloys show fo rward peaks at small values of K, which indicate an inhomogeneous dist ribution of the magnetization of these alloys. These inhomogeneities i ndicate the existence of magnetization clouds that produce the ferroma gnetism in these materials; the shape of the peaks at small K also sug gest a quasielastic contribution to the neutron diffuse scattering. We , therefore, calculated the neutron scattering cross sections for thes e alloys using a local moment model; we also developed an analytic exp ression for the magnetization clouds that can be compared with experim ental results. The calculations were made using Monte Carlo methods in the dilute alloy region of impurity concentration. (C) 1996 American Institute of Physics.