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High energy transmission of Al2O3 doped with light transition metals

: Schuster, C.; Klimke, J.; Schwingenschlögl, U.


The Journal of chemical physics 136 (2012), No.4, Art. 044522, 4 pp.
ISSN: 0021-9606
Journal Article
Fraunhofer IKTS ()
transparent ceramic; Ab initio calculation; alumina; chromium; cobalt; colour; electronic structure; infrared spectra; transparency; visible spectra

The transmission of transparent colored ceramics based on Al2O3 doped with light transition metals is measured in the visible and infrared range. To clarify the role of the dopands we perform ab initio calculations. We discuss the electronic structure and present optical spectra obtained in the independent particle approximation. We argue that the gross spectral features of Co- and Ni-doped Al2O3 samples are described by our model, while the validity of the approach is limited for Cr-doped Al2O3.