Morphological studies of single phase alumina fabricated by wet milling method

Abstract

A wet milling process has been used as a novel method to fabricate single phase alumina. To fabricate the most thermodynamically stable form of alumina i.e., alpha-Al2O3, slurry method has been used here. alpha-Al2O3 has the widest band gap similar to 8.8 eV which makes it more valuable in electronic devices for use as a perfect insulator. Further, to confirm the surface morphology of the prepared alpha-Al2O3 sample, scanning electronic microscopy has been done. The prepared alpha-Al2O3 sample has been characterized using X-ray diffraction pattern, Fourier transform infra-red spectroscopy and photoluminescence spectroscopy. Raman spectroscopy of prepared alpha-Al2O3 has also been performed to understand the behaviour at microscopic level and also to confirm the purity of the single phase alpha-Al2O3 sample.