Abstract
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 200nm and length of 1–1.5μm were obtained at optimum conditions of 200°C/48h. 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. E1/2 characteristics in the temperature range of 300–400K 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 field lowering coefficient with an internal field enhancement factor of α2=23.5. This high value of βexp may be due to some localized electric fields existing inside the sample.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Progress in Natural Science: Materials International
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
