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The magnetic behavior of the quaternary compounds, RCr2Si2C (R = La, Ce), hasbeen investigated by magnetization (M) and heat-capacity (C) measurements(1.8-300 K) in the bulk polycrystals and nano forms (<1 {\mu}m) obtained byhigh-energy balling. Our finding is that Cr appears to exhibit magneticordering of an itinerant type at low temperatures (<20 K) in the bulk form, asinferred from a combined look at all the data. The magnetic ordering getsgradually suppressed with increasing milling time. Evidence for a mixed-valencestate of Ce for the bulk form is obtained from the tendency of magneticsusceptibility to exhibit a maximum above 300 K. However, this feature vanishesin the nano form, which exhibits a Curie-Weiss behavior above 200 K as thoughCe tends towards trivalency in these fine particles; in addition, there is aweak upturn in C/T below 10 K in the bulk, which becomes very prominent in themilled Ce-based specimens at lower temperatures, as though heavy-fermionbehavior gets stronger in smaller particles.

Magnetic behavior of bulk and fine particles of RCr2Si2C (R = La, Ce)compounds: possible magnetic ordering from Cr