Determination of the Solubility Limit of Ruthenium Ions in the Structure of Yttrium Aluminum Garnet

Abstract

Ceramics based on yttrium aluminum garnet doped with ruthenium ions were synthesized. Ceramic samples were obtained by non-reactive sintering of nanocrystalline powders formed by chemical coprecipitation. The results of XRD and EDX analysis indicated that the yttrium-aluminum garnet matrix can accommodate up to 0.5 àt.% of ruthenium cations without the formation of secondary phases or impurities. Minor deviations from the stoichiometry of the composition did not hinder the incorporation of ruthenium into the structure of yttrium aluminum garnet. In addition, changes in the valence of the sintering additive had no effect on the solubility of ruthenium ions in the ceramic material.