  The influence of a strong disorder on the critical dynamics of 3D Heisenberg
ferromagnet was investigated by high-resolution quasielastic neutron
scattering. A new disorder-induced dynamical critical behavior was found,
characterized by its critical exponent z=2.3. The dynamical scaling function
appeared mainly unaffected by disorder but its description led to a new
parameterization of the Renormalization Group theory, as in the case of pure
Nickel.
