Europium structural environment in a sodium disilicate glass by XAS

被引：18

作者：

Cicconi, Maria Rita ^{[1
]}

Giuli, Gabriele ^{[1
]}

Paris, Eleonora ^{[1
]}

Dingwell, Donald B. ^{[2
]}

机构：

[1] Univ Camerino, Sch Sci & Technol, Geol Div, I-62032 Camerino, Italy

[2] LMU Univ Munich, D-80333 Munich, Germany

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2010年 / 356卷 / 35-36期

关键词：

Rare earth doped glasses; Alkali silicate glass; Glass structure; EXAFS; X-ray absorption; X-RAY-ABSORPTION; NEAR-EDGE STRUCTURE; PHOSPHATE-GLASSES; RARE-EARTHS; EU; XANES; EXAFS; METAPHOSPHATE; MINERALS; VALENCE;

D O I：

10.1016/j.jnoncrysol.2010.06.029

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The structural environment of europium (Eu) in a synthetic silicate glass of Na2Si2O5 composition has been determined with the final purpose to carry out a detailed investigation of the role of europium in glasses by building a structural model as a function of glass composition. The sample analyzed in this study has been characterized through Eu L-3-edge X-ray Absorption Spectroscopy (XAS), which allowed to obtain Eu oxidation state, coordination number and the < Eu-O > bond distances in the glass. From EXAFS data analysis Eu results to be bonded to six oxygens (< Eu-O > = 2.26 +/- 0.01 angstrom) at the corners of an almost regular octahedron. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1749 / 1753

页数：5

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