Studies on Nano Materials based on Cadmium and Manganese Compounds

Abstract

Metal oxide nano particles have found its use in many applications owing to its unique physical and chemical properties. Composite nano materials have enhanced optical, electrical, thermal and magnetic properties and are used for many emerging technologies like optical devices, sensors, optical imaging, solar cells and other optoelectronic devices Cadmium Oxide (CdO) is a well-known II-VI semiconductor having applications in catalysts, sensors, solar cells and non-linear materials. Transition metal oxide nano particles are very attractive due to their variety of applications. Transition metal oxide nano paricles can exhibit enhanced optical, magnetic and electrical properties as compared to their bulk counter parts. Mn3O4 is a well known among the transition metal oxide for its low toxicity and natural abundance. Both CdO and Mn3O4 are used in sensors, electrode materials batteries and newlineIn this present work an attempt has been made to prepare CdO-Mn3O4 nanocomposites by the method of solid state reaction: A solid state reaction is also called as dry media reaction or a solvent less reaction. It is a chemical reaction in which no solvents are used. These prepared composites were subjected to ballmilling for a period of 5 hrs and 10 hrs respectively. Powder X-Ray Diffraction (PXRD) and Fourier Transform Infrared Spectroscopy (FTIR) measurements were carried out to structurally and chemically characterize the prepared samples. newlineOptical characterization was carried out by making Ultra Violet and Visible Spectroscopy (UV-Vis) spectral and Photoluminescence (PL) analysis. Dielectric measurements were carried out inorder to characterize the samples electrically. newlineThe PXRD studies have confirmed the Cubic structure of CdO and the tetragonal phase of Mn3O4. The intensity of the prepared CdO-Mn3O4 nanocomposites was found to be decreased linearly with respect to ball milling. The morphological studies for the prepared CdO-Mn3O4 nanocomposites exhibits cubical, spherical and sponge l