Effect of Mn doping on magnetic and transport properties of Nd0.5Sr0.5Co(1−y)MnyO3

► Effect of Mn doping in Nd0.5Sr0.5Co(1−y)MnyO3 has been investigated. ► Curie temperature changes non-monotonically with Mn concentration. ► Low temperature resistivity also changes non-monotonically with Mn concentration. ► Magneto-resistance increases monotonically with Mn concentration.