SYNTHESIS, STRUCTURAL AND OPTICAL CHARACTERIZATION OF GADOLINIUM MIXED YTTRIUM OXIDE NANO MATERIALS

Gadolinium mixed Yttrium oxide (Y2O3:Gd) nano material shave been synthesized by co-precipitation technique. The synthesized materials have been annealed at 500C, 750C and 1000°C using a muffle furnace at normal atmosphere. It is observed that the crystalline nature of the nano powders was increased due to annealing process which is evidenced by the observed diffraction planes in the powder diffraction patterns.In order to identify the oxide vibrations in response to the IR frequency, the FTIR spectra have been recorded and the different modes of vibration of rare earth oxides have been observed. The elemental analysis has been carried out using XPS and energy dispersive spectral analysis using a scanning electron microscope. The weight ratio and atomic ratio of the elements present in the sample has been identified and discussed. The morphology of the annealed samples has been studied through high resolution SEM images and the crystallite size was found by using TEM images. The photo luminescence spectral analysis indicated that the synthesized materials have emission in the blue region. However, it is also observed that the annealing temperature of the samples has influenced significantly on the structure, morphology and photoluminescence property.