  We present a quantitative study of the current-voltage characteristics (CVC)
of SFIFS Josephson junctions (S denotes bulk superconductor, F - metallic
ferromagnet, I - insulating barrier) with weak ferromagnetic interlayers in the
diffusive limit. The problem is solved in the framework of the nonlinear Usadel
equations. We consider the case of a strong tunnel barrier such that the left
SF and the right FS bilayers are decoupled. We calculate the density of states
(DOS) in SF bilayers using a self-consistent numerical method. Then we obtain
the CVC of corresponding SFIFS junctions, and discuss their properties for
different set of parameters including the thicknesses of ferromagnetic layers,
the exchange field, and the magnetic scattering time. We observe the anomalous
nonmonotonic CVC behavior in case of weak ferromagnetic interlayers, which we
ascribe by DOS energy dependencies in case of small exchange fields in F
layers.
