Electrical Properties of Mn3O4 Nanorods Developed Through Aluminum Anodic Membranes

Nano-scaled materials have attained extensive interest because these materials are appropriate for the investigation of some ultimate aspects of ordered phenomena under reduced dimensions, and thus possessing novel promising applications. We reported the synthesis of Mn3O4 nanoparticles via hydrothermal process. Later, we developed nanorods using aluminum oxide membrane (AAO) with the help of vacuum infiltration. This design is carried out to enhance the electrical properties of Mn3O4 nanoparticles, which already have potential application in storage devices. AC electrical conductivity of Mn3O4-filled AAO membrane as a function of frequency and temperature is studied. AC electrical measurements are carried out at various temperatures ranging from 30-80 degrees C by the parallel plate capacitor method. There is a small increase in the electrical conductivity of the nanoparticle at low frequency region. However, at high frequencies especially in the MHz region, there is an abrupt increase in the conductivity especially at 40 degrees C. X-Ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM) confirmed the formation of nanorods.