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We have investigated for the first time the magnetic behaviour of anintermetallic compound, Dy4RhAl, crystallizing in Gd4RhIn type cubic structurecontaining 3 sites for rare-earth (R), by several bulk measurements down to 1.8K. This work is motivated by the fact that the isostructural Dy compound in theR4PtAl family surprisingly orders ferromagnetically unlike other members ofthis series, which order antiferromagnetically. The results reveal that thetitle compound undergoes antiferromagnetic order at about 18 K, similar toother heavy R members of R4RhAl family, unlike its Pt counterpart, indicating asubtle difference in the role of conduction electrons to decide magnetism ofthese compounds. Besides, spin-glass features coexisting with antiferromagneticorder could be observed, which could mean cluster antiferromagnetism. Theelectrical resistivity and magnetoresistance behaviours in the magneticallyordered state are typical of magnetic materials exhibiting antiferromagneticgap. Features attributable to spin-reorientation as a function of temperatureand magnetic field can be seen in the magnetization data.

Magnetic behavior of cubic Dy4RhAl with respect to isostructural Dy4PtAl, revealing a novel 4f d-band interaction