X-ray absorption near edge structure (XANES) investigation of MnOy-doped sodium metaphosphate glasses and crystalline reference materials

被引：9

作者：

Brendebach, B

Reinauer, F

Zotov, N

Funke, M

Glaum, R

Hormes, J

Modrow, H

机构：

[1] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[2] Univ Bonn, Inst Anorgan Chem, D-53121 Bonn, Germany

[3] Univ Bonn, Mineral Petrolog Inst, D-53115 Bonn, Germany

[4] Ctr Adv Microstruct & Devices, Baton Rouge, LA 70806 USA

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2005年 / 351卷 / 12-13期

关键词：

D O I：

10.1016/j.jnoncrysol.2005.01.020

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 comparison of X-ray absorption near edge structure (XANES) spectra of MnOy-doped sodium metaphosphate glasses with the spectra of crystalline manganese oxides clearly indicates that the majority of the manganese ions are Mn2+, although the intensive violet color of these glasses is typical for manganese(III) containing phosphates. This finding is confirmed by permanganometric titration showing a maximum Mn3+-content of about 3 mol%. A decrease in the white line intensity with increasing manganese concentration is observed for a series of three glasses which is related to an increasing percentage of 4-fold oxygen coordinated manganese ions. (c) 2005 Published by Elsevier B.V.

引用

页码：1072 / 1076

页数：5