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The magnetotransport, magnetic and magnetocaloric properties in the polycrystalline Pr 1−x Sr x MnO 3 (0.20x0.40) have been studied. The X-ray diffraction peaks for the composition x=0.20, 0.33 and 0.40 have been indexed with orthorhombic structure having Pnma space group, whereas x=0.25 composition has been indexed to R-3c space group having rhombohedral symmetry. The substitution of Sr 2+ at Pr 3+ site shows an increase in metal-insulator transition temperature (T MI ) and ferromagnetic ordering temperature (T c ). The composition, x=0.25 shows the higher isothermal magnetic entropy change, DS m | |=2.84 J kg −1 K −1 with RCP=116.33 J kg −1 at ΔH=3 Tesla. The high RCP value (=151.16 J kg −1 ) with DS m | |=2.41 J kg −1 K −1 at ΔH=3 Tesla for the composition, x=0.40, implies that dT fwhm plays a significant role.

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