  The layered compound with distorted Kagome nets, Dy3Ru4Al12, was previously
reported to undergo antiferromagnetic ordering below (TN=) 7 K, based on
investigations on single crystals. Here, we report the results of our
investigation of ac and dc magnetic susceptibility (\c{hi}), isothermal remnant
magnetization (MIRM), heat-capacity, magnetocaloric effect and
magnetoresistance measurements on polycrystals. The present results reveal that
there is an additional magnetic anomaly around 20 K, as though the N\'eel order
is preceded by the formation of ferromagnetic clusters. We attribute this
feature to geometric frustration of magnetism. In view of the existence of this
phase, the interpretation of the linear-term in the heat-capacity in terms of
spin-fluctuations from the Ru 4d band needs to be revisited. Additionally, in
the vicinity of TN, AC \c{hi} shows a prominent frequency dependence and, below
TN, MIRM exhibits a slow decay with time. This raises a question whether the
antiferromagnetic structure in this compound is characterized by
spin-glass-like dynamics. In contrast to what was reported earlier, there is a
change in the sign of the magnetoresistance (MR) at the metamagnetic
transition. A butter-fly-shaped (isothermal) MR loop (interestingly spanning
over all the four quadrants) is observed at 2 K with distinct evidence for the
magnetic phase co-existence phenomenon in zero field after travelling through
metamagnetic transition field. The results on polycrystals thus provide
additional information about the magnetism of this compound, revealing that the
magnetism of this compound is more complex than what is believed, due to
geometric frustration intrinsic to Kagome net.
