Journal
RADIATION PHYSICS AND CHEMISTRY
Volume 199, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2022.110315
Keywords
X-ray absorption spectroscopy; Ruby; Corundum
Funding
- SLRI, Thailand under SRI Fund [2022]
- CSEc, SLRI, Thailand
- Reinventing University Project (RMUTT) 2022, Office of the Ministry of Higher Education, Science, Research and Innovation, Thailand Science Research and Innovation
- Rajamangala University of Technology Isan (RMUTI) , Thailand
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This study investigates the correlation between the structural orientation and chromatic characteristics in rubies using XRD, XAS, and DFT calculations. The results provide important insights into the locally determined structures and their effects on energy levels.
We study the correlation between the structural orientation and the chromatic characteristics in rubies by combining X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), and density functional theory (DFT) calculations. The chemical compositions were investigated by X-ray fluorescence (XRF). XRD result shows the preferred orientation of Al2O3 crystals as the (113), (110), and (223) plans. The local site and structural orientation of Cr impurities were investigated by the XAS technique, which prefers [141] and [411] polarizations. The optical absorption energy was estimated according to UV-visible spectroscopy. The results show the impurity state that relates to the optical absorption and emission energies. More importantly, the results show that the information on the locally determined structures and their effect on energy levels in rubies were obtained and discussed.
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