  Magnetic Weyl semimetals attract considerable interest not only for their
topological quantum phenomena but also as an emerging materials class for
realizing quantum anomalous Hall effect in the two-dimensional limit. A
shandite compound Co3Sn2S2 with layered Kagome-lattices is one such material,
where vigorous efforts have been devoted to synthesize the two-dimensional
crystal. Here we report a synthesis of Co3Sn2S2 thin flakes with a thickness of
250 nm by chemical vapor transport method. We find that this facile bottom-up
approach allows the formation of large-sized Co3Sn2S2 thin flakes of
high-quality, where we identify the largest electron mobility (~2,600
cm2V-1s-1) among magnetic topological semimetals, as well as the large
anomalous Hall conductivity (~1,400 {\Omega}-1cm-1) and anomalous Hall angle
(~32 %) arising from the Berry curvature. Our study provides a viable platform
for studying high-quality thin flakes of magnetic Weyl semimetal and stimulate
further research on unexplored topological phenomena in the two-dimensional
limit.
