VIBRATIONAL PROPERTIES OF COBALT OXIDE NANOPARTICLE BY COPRECIPITATION METHOD

Abstract

Nanotechnology refers to the creation and utilization of materials whose constituents existat the nanoscale; and, by convention, be up to 100 nm in size. Nanotechnology exploreselectrical, optical, and magnetic activity as well as structural behavior at the molecular andsubmolecular level. The absorption band at 567 cm-1 was assigned to Co-O stretching vibrationmode and 661 cm-1 was assigned to the bridging vibration of O-Co-O bond denotes theCo2+Co3+O3 bonding vibrations as in type ABO3 (where A denotes the Co2+ in the tetrahedral site)of the crystal lattice structure. The small broad band at 3440 cm-1 is due to O-H stretchingvibration modes. The less intense band at 1635 cm-1is assigned to the bending mode of watermolecule vibration. Increasing the calcination temperature reduces the intensity of the 3440 cm-1,which may be due to the reduction in water content of the samples.