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Structural, morphological and optical investigations of θ-Al2O3 ultrafine powder

Jbara, A. S. and Othaman, Z. and Saeed, M. A. (2017) Structural, morphological and optical investigations of θ-Al2O3 ultrafine powder. Journal of Alloys and Compounds, 718 . pp. 1-6. ISSN 0925-8388

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Single-phase θ-Al2O3 nanopowder has been synthesized by co-precipitation technique. The synthesized powders were sintered at a temperature ranging from 900 to 1200 °C. A stable monoclinic phase is observed for the whole sintering temperature range. The purity, chemical bonds, morphology and optical properties of the powders were investigated by different characterization techniques. X-ray diffraction and Brunauer–Emmett–Teller analysis confirms the existence of ultrafine alumina powders with particle diameter of ∼5 nm and surface area of 100 m2/g. The novel optical results such as band gap of 5.8 eV would reveal the viability of observed phase of alumina in advanced semiconductor applications.

Item Type:Article
Uncontrolled Keywords:Optical band gap, Ultrafine powder
Subjects:Q Science > QC Physics
ID Code:76408
Deposited By: Fazli Masari
Deposited On:30 Apr 2018 13:20
Last Modified:30 Apr 2018 13:20

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