Rare-earth-doped α′-Sialon ceramics with novel optical properties
- 1 November 1996
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 11 (11) , 2790-2794
- https://doi.org/10.1557/jmr.1996.0353
Abstract
A new phenomenon in the field of Sialon ceramics is reported which may lead to applications based on their optical or electronic properties in combination with their mechanical and thermal properties. For the first time a colored α′-Sialon ceramic has been synthesized, with relatively high optical transparency by careful control of the sintering atmosphere, and adding suitable rare earths as stabilizing cations. This compares with normal Sialons and silicon nitrides which are grey-black in color and are opaque. Oxidation/reduction mechanisms have been identified as an influence on the valence of the stabilizing cation, which is responsible for the unusual optical properties.Keywords
This publication has 13 references indexed in Scilit:
- Superconductivity and cation-vacancy ordering in the rare-earth fulleride Yb2.75C60Nature, 1995
- Luminescence of divalent ytterbium in alkaline earth sulphatesJournal of Luminescence, 1994
- α⇄β SiAlON TransformationPublished by Springer Nature ,1994
- Preparation of fine-grained calcium ?-sialonJournal of Materials Science Letters, 1994
- Pressureless sintering of Y2O3-CeO2-doped sialonsJournal of Materials Science, 1990
- Structural characterization of ceramic phases with high-resolution27Al NMRJournal of Applied Crystallography, 1988
- Two-dimensional solid-solution formation of Y-containingα-Si3N4Journal of Materials Science Letters, 1986
- Structure refinement of yttrium ?-sialon from X-ray powder profile dataJournal of Materials Science Letters, 1982
- α′-Sialon ceramicsNature, 1978
- Contribution to the Phase Diagram Si3N4‐AlN‐Al2O3‐SiO2Journal of the American Ceramic Society, 1975