A structural study of Y2O3---Al2O3---SiO2 glass employing partial RDFs obtained by anomalous scattering期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

A structural study of Y₂O₃---Al₂O₃---SiO₂ glass employing partial RDFs obtained by anomalous scattering

Authors:	A. Nukui U. Shimizugawa S. Inoue H. Ozawa R. Uno K. Oosumi A. Makishima

Affiliation:	National Institute for Research in Inorganic Materials, Namiki 1-1, Tsukuba, Ibaraki 305, Japan Nihon University, Setagaya, Tokyo 156, Japan National Laboratory for High Energy Physics, Tsukuba 305, Japan University of Tokyo, Hongou, Tokyo 113, Japan

Abstract:	A structural study of Y₂O₃---Al₂O₃---SiO₂ glass has been performed using the partial radial distribution function (RDF) obtained by anomalous scattering at the Y absorption edge. The partial RDF consists of contributions from atom pairs, such as Y---O, Y---M(Si, Al) and Y---Y, related to the local arrangements around the Y atoms, while those of all of the constituent atom-pairs are convoluted into the ordinary RDF. The M(Si, Al)---O, Y---O, M---M, Y---M, and Y---Y interatomic distances and the coordination numbers around the Al and Y atoms are obtained from the two RDFs. The local structures around the Al and Y atoms in the glass are discussed.

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