Inducing magnetic order by Ru-substitution in PrFeSi

We have investigated the magnetic and transport properties across the transition from nonmagnetic to magnetically ordered state of Pr in PrFe1−xRuxSi polycrystalline samples. PrFeSi does not order magnetically, whereas by replacing Fe with Ru, magnetic ordering was induced for x=0.15. Increase in Ru content shifts the transition towards higher temperature. Metamagnetic transition observed in magnetization and magnetoresistance measurement shifted towards higher field with increase in Ru content. For x>0.15, a hump is observed in resistivity data possibly due to formation of a superzone gap.