A composite-hydroxide mediated method was employed to synthesize barium manganite nanorods.Diameter,surface smoothness and uniformity of these nanorods were optimized by varying reaction temperature and reaction time.The rods with an average diameter of 200 nm and length of1–1.5 μm were obtained at optimum conditions of 200 1C/48 h.The dielectric study of these rods reveals that they have higher value of dielectric constant at lower frequencies which was attributed to the interfacial and rotational type polarizations.Similarly,the increase in dielectric constant with temperature was attributed to the thermal activation of such polarizations.Furthermore,the analysis of ln(J) vs.E1/2characteristics in the temperature range of 300–400 K shows that possible operative conduction mechanism was of Poole–Frenkel type.The value of βexp was found to be 4.85 times greater than the expected theoretical value of feld lowering coeffcient with an internal feld enhancement factor ofα2 23.5.This high value of βexp may be due to some localized electric felds existing inside the sample. A composite-hydroxide mediated method was employed to synthesize barium manganite nanorods.Diameter, surface smoothness and uniformity of these nanorods were optimized by varying reaction temperature and reaction time. The rods with an average diameter of 200 nm and length of 1-1.5 μm were obtained at optimum conditions of 200 1C / 48 h. the dielectric study of these rods reveals that they have higher value of dielectric constant at lower frequencies which was attributed to the interfacial and rotational type polarizations.Similarly, the increase in dielectric constant with temperature was attributed to the thermal activation of such polarizations. Ferrthermore, the analysis of ln (J) vs. E1 / 2 characteristic in the temperature range of 300-400 K shows that possible operative conduction mechanism was of Poole-Frenkel type. value of βexp was found to be 4.85 times greater than the expected theoretical value of feld lowered coeffcient with an internal feld enhancement factor of α2 23.5.Th is high value of βexp may be due to some localized electric felds existing inside the sample.