  We show the successful intercalation of large area (1 cm$^2$) epitaxial
few-layer graphene grown on 4H-SiC with FeCl$_3$. Upon intercalation the
resistivity of this system drops from an average value of $\approx 200 \
\Omega/sq$ to $\approx 16 \ \Omega/sq$ at room temperature. The
magneto-conductance shows a weak localization feature with a temperature
dependence typical of graphene Dirac fermions demonstrating the decoupling into
parallel hole gases of each carbon layer composing the FeCl$_3$ intercalated
structure. The phase coherence length ($\approx 1.2 \mu$m at 280 mK) decreases
rapidly only for temperatures higher than the 2-D magnetic ordering in the
intercalant layer while it tends to saturate for temperatures lower than the
antiferromagnetic ordering between the planes of FeCl$_3$ molecules providing
the first evidence for magnetic ordering in the extreme two-dimensional limit
of graphene.
