Effect of Fe substitution on magnetocaloric effect in La0.7Sr0.3Mn1−xFexO3 (0.05≤x≤0.20)

► We report magnetocaloric effect in La0.7Sr0.3Mn1−xFexO3 (x=0-0.2). ► Magnetic entropy change (ΔSm) decreases with increasing x. ► A large ΔSm and refrigeration capacity are found around 300 K in x=0.07.