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Title: Synthesis, characterisation, optical and luminescence properties of CoAl{sub 2}O{sub 4}

Solid state method has been used as an efficient method to synthesize blue pigment CoAl{sub 2}O{sub 4} at a temperature of 800°C. The products were characterized by powder X-ray diffraction (XRD), Fourier transformer infrared spectroscopy (FTIR), UV-Visible diffuse reflectance spectroscopy (DRS) and luminescent spectroscopy. X-ray diffraction pattern confirmed the formation of single phase CoAl{sub 2}O{sub 4}. Optical properties of CoAl{sub 2}O{sub 4} ceramic shows an energy band gap in the range of 3.10eV. The emission spectra of spinel CoAl{sub 2}O{sub 4} in the visible region confirmed the presence of tetrahedral coordinated Co{sup 2+} ions.
Authors:
;  [1]
  1. School of Advanced Sciences, VIT University, Vellore, Tamil Nadu, India-632014 (India)
Publication Date:
OSTI Identifier:
22490539
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; ALUMINATES; CERAMICS; COBALT COMPOUNDS; COBALT IONS; EMISSION SPECTRA; FOURIER TRANSFORMATION; INFRARED SPECTRA; LUMINESCENCE; OPTICAL PROPERTIES; POWDERS; SOLIDS; SPECTRAL REFLECTANCE; SPINELS; SYNTHESIS; X-RAY DIFFRACTION