Microscopic origin of the optical processes in blue sapphire

Jessica K. Bristow; Stephen C. Parker; C. Richard A. Catlow; Scott M. Woodley; Aron Walsh

doi:10.1039/c3cc41506f

Microscopic origin of the optical processes in blue sapphire

Jessica K. Bristow, Stephen C. Parker, C. Richard A. Catlow, Scott M. Woodley, Aron Walsh

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

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 charge transfer from Ti(II) to Fe(III) as being responsible for the characteristic blue appearance.

Original language	English
Pages (from-to)	5259-5261
Number of pages	3
Journal	Chemical Communications
Volume	49
Issue number	46
DOIs	https://doi.org/10.1039/c3cc41506f
Publication status	Published - 2013 May 14

All Science Journal Classification (ASJC) codes

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
Chemistry(all)
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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abstract = "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 charge transfer from Ti(II) to Fe(III) as being responsible for the characteristic blue appearance.",

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