STRUCTURAL ANALYSIS, MICROSTRUCTURAL INVESTIGATION AND ENERGY BAND GAP DETERMINATION OF ZINC OXIDE AND MAGNESIUM TITANATE MIXED COMPOSITE

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Abstract
  • Mixed composite materials of Zinc Oxide and Magnesium Titanate (ZnO:MgTiO3) with the compositions of (20%:80%, 40%:60%, 60%:40% and 80%:20%) were prepared by using solid state reaction method. The samples were characterized by powder X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Ultra-Violet-Visible-Near Infrared (UV-VIS-NIR) spectroscopy to analyze the structural, microstructural and optical properties of the samples. The crystalline phase formation and the structural properties were analyzed from the observed XRD patterns. Microstructural properties of grain shape and sizes were investigated by SEM. The energy band gaps Eg were determined from the Tauc plot of (αhυ)2 vs. hυ graphs. It was found that the energy band gap decreased with increase in ZnO composition.
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  • 24. Dr July Oo (277-288).pdf
Year
  • 2019
Author
  • July Oo
Subject
  • Physics
Publisher
  • Myanmar Academy of Arts and Science (MAAS)

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