  We have investigated the temperature (T)-dependent evolution of electronic
structures and magnetic properties of an itinerant ferromagnet SrRuO3,
employing the combined scheme of the density functional theory and the
dynamical mean-field theory (DFT+DMFT). The inclusion of finite dynamical
correlation effects beyond the DFT well describes not only the incoherent hump
structure observed in the photoemission experiment but also the T-dependent
magnetic properties in accordance with experiments. We have shown that the
magnetization of SrRuO3 evolves with the Stoner behavior below the Curie
temperature (Tc), reflecting the weak itinerant ferromagnetic behavior, but the
local residual magnetic moment persists even above Tc, indicating the local
magnetic moment behavior. We suggest that the ferromagnetism of SrRuO3 has dual
nature of both weak and local moment limits, even though the magnetism of
SrRuO3 is more itinerant than that of Fe.
