Site occupation and solubility limit of Sc in Lu3Al5O12 |
| |
Authors: | A.G. Petrosyan K.L. Ovanesyan G.O. Shirinyan R.V. Sargsyan C. Dujardin C. Pedrini |
| |
Affiliation: | 1. Institute for Physical Research, National Academy of Sciences of Armenia, 0203 Ashtarak 2, Armenia;2. Université de Lyon, Université Lyon 1, CNRS, UMR5620, Laboratoire de Physico-Chimie des Matériaux Luminescents, F-69622 Villeurbanne Cedex, France |
| |
Abstract: | Crystallographic study of the Lu3Al5O12:Sc system shows existence of a wide range of compositions involving substitutions by Sc for both six-fold octahedral and eight-fold dodecahedral sites of the lattice. In comparison to other rare-earth garnets, the total amount of Sc that can be tolerated by this matrix is however much lower. The limited solubility of Sc is associated with the small size difference between the constituent atoms, which approaches a critical value with increasing the Sc content. Preparation of clear single-phase solid solution crystals requires an accurate account of site occupation preferences. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|