Advanced analyses of 57Fe Mossbauer data of alumino-silicate glasses

被引：41

作者：

Rossano, S. ^{[1
]}

Behrens, H. ^{[2
]}

Wilke, M. ^{[3
]}

机构：

[1] Univ Paris Est, Lab Geomat & Geol Ingn G21, F-77454 Marne La Vallee 2, France

[2] Leibniz Univ Hannover, Inst Mineral, D-30167 Hannover, Germany

[3] Univ Potsdam, Inst Geowissensch Mineral Petrol, D-14476 Golm, Germany

来源：

PHYSICS AND CHEMISTRY OF MINERALS | 2008年 / 35卷 / 02期

关键词：

Mossbauer; glass; iron; site distribution; oxidation state;

D O I：

10.1007/s00269-007-0200-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fe-57 Mossbauer spectra of iron bearing alumino-silicate glasses are analysed by two complementary methods (SID and x-VBF) especially adapted for the analysis of disordered systems by taking into account distributions of hyperfine Mossbauer parameters. Qualitative and quantitative information about the oxidation state of iron are obtained as well as information about the distribution of local environments of iron. The possibility to separate the signal of ferric iron from that of ferrous iron allows to derive precise redox ratio in favourable cases but also to analyse more sharply the different contributions to Mossbauer spectra. Using two different glass series (feldspar composition, haplo-tonalitic composition), the characteristics of the two methods are described and employed to study the effect of composition, water incorporation and oxidation state on the glass structure. Optical absorption spectroscopy is used to support the interpretation of the Mossbauer spectra in case of the feldspar glasses.

引用

页码：77 / 93

页数：17

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