Abstract
Neutron inelastic scattering has been used to examine the space-time magnetic correlation function in the non-Fermi-liquid compound UCu4Pd. In contrast with the results obtained previously on as-cast samples, the response of carefully annealed material shows a simple exponential time dependence. These microscopic measurements confirm an earlier conjecture based on annealing experiments that, whilst atomic disorder is not the origin of non-Fermi-liquid behaviour in UCu4Pd, the order-disorder equilibrium may, however, in a similar manner to the use of applied magnetic field, pressure and composition, be used as a tuning parameter to achieve non-Fermi-liquid response.