  Ferromagnetic transition in double-exchange systems is studied by
non-equilibrium relaxation technique combined with Monte Carlo calculations.
Critical temperature and critical exponents are estimated from relaxation of
the magnetic moment. The results are consistent with the previous Monte Carlo
results in thermal equilibrium. The exponents estimated by these independent
techniques suggest that the universality class of this transition is the same
as that of short-range interaction models but is different from the mean-field
one.
