  We report low temperature (1.8-15 K) ac magnetic susceptibility and
isothermal remanent magnetization behavior for the single crystalline form of
Dy2PdSi3, crystallizing in a AlB2-derived hexagonal structure, for two
orientations. The results, while confirming the existence of two magnetic
transitions, one at 8 K and the other at 2.5 K, as inferred from previous dc
magnetization studies, suggest that the 2.5K-transition is spin-glass-like,
with an interesting sensitivity to the application of an external dc magnetic
field. Thus, this compound appears to undergo a transition from
antiferromagnetism to spin-glass freezing as the temperature is lowered.
