Microscopic origin of the optical processes in blue sapphire

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Bristow, Jessica K.; Parker, Stephen C.; A. Catlow, C. Richard; Woodley, Scott M.; Walsh, Aron;
(2013)
  • Publisher: Royal Society of Chemistry
  • Journal: volume 49,pages5,259-5,261issn: 1359-7345
  • Publisher copyright policies & self-archiving
  • Related identifiers: doi: 10.1039/c3cc41506f
  • Subject: Chemistry | Alpha-AL2O3 | Absorption | Impurities | Corundum | Chemical Sciences | Chemistry, Multidisciplinary | Defect | Physical Sciences | Science & Technology | Spectroscopy | TI | Organic Chemistry | Transition-metal ions | Doped sapphire | FE

Al2O3 changes from transparent to a range of intense colours depending on the chemical impurities present. In blue sapphire, Fe and Ti are incorporated; however, the chemical process that gives rise to the colour has long been debated. Atomistic modelling identifies cha... View more
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