  The influence of positive and negative chemical pressure on the magnetic
behavior of the compound, Ce2RhSi3, crystallizing in a AlB2-derived hexagonal
structure and ordering antiferromagnetically around (TN = 7 K), is investigated
by studying electrical resistivity (rho) and magnetic susceptibility (chi)
behavior of the solid solutions formed by gradual substitution of La/ Y for Ce.
While typical features associated with a transformation from the Kondo-lattice
to single-ion Kondo effect are seen in the low temperature rho data of both the
solid solutions, there are profound differences in their behavior at higher
temperatures. In particular, Y is apparently more effective in enhancing the
Kondo temperature. La2RhSi3 is found to be superconducting below 3 K.
