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Proceedings of the 9th All - Polish Seminar on Mössbauer Spectroscopy OSSM'2012, 10-13 June 2012, Lublin - Kazimierz Dolny, Poland
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Abstrakty
A 57Fe Mössbauer spectroscopy study is presented. The main goal of the research was to investigate the structural information of the glass-like the coordination numbers and redox ratio of the iron. Most of the iron, about 80%, is present in the glass as Fe3+, which is composed of tetrahedral (57%) and octahedral (23%) coordinated iron. The rest of the iron, about 20%, is in the oxidation state Fe2+. This iron could be mostly present as VIFe2+, but five-fold coordinated iron is also possible. Finally, the structural model of the synthesized 60P2O5-40Fe2O3 glass was proposed.
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Tom
Strony
63--66
Opis fizyczny
Bibliogr. 10 poz., rys.
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autor
autor
autor
autor
autor
autor
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, al. A. Mickiewicza 30, 30-059 Krakow, Poland and National Centre for Nuclear Research, 7 Andrzeja Sołtana Str., 05-400 Otwock/Świerk, Poland, Tel.: +48 12 617 2504,, pstoch@agh.edu.pl
Bibliografia
- 1. Alberto HV, Pinto da Cunha JL, Mysen BO, Gil JM, Ayres de Campos N (1996) Analysis of Mössbauer spectra of silicate glass using a two-dimensional Gaussian distribution of hyperfine parameters. J Non-Cryst Solids 194:48–57
- 2. Al-Hasani B, Mountjoy G (2011) Structural investigations of iron phosphate glasses using molecular dynamics simulation. J Non-Cryst Solids 357:2775–2779
- 3. Donald IW (2010) Waste immobilization in glass and ceramic based hosts. Radioactive, toxic and hazardous wastes. Wiley, Chichester
- 4. Hannant OM, Bingham PA, Hand RJ, Forder SD (2008) The structural properties of iron in vitrified toxic waste ashes. Glass Technol: Eur J Glass Sci Technol A 49:27–32
- 5. Marasinghe GK, Karabulut M, Ray Cs et al. (1997) Structural features of iron phosphate glasses. J Non-Cryst Solids 222:144–152
- 6. Ojovan MI, Lee WE (2005) An introduction to nuclear waste immobilization. Elsevier, Oxford
- 7. Rao KJ (2002) Structural chemistry of glasses. Elsevier, Oxford
- 8. Rossano S, Beherens H, Wilke M (2008) Advanced analyses of 57Fe Mössbauer data of alumino-silicate glasses. Phys Chem Minerals 35:77–93
- 9. Wedgwood FA, Wright AC (1976) Short range antiferromagnetic ordering in vitreous Fe2O3-P2O5. J Non-Cryst Solids 21:95–105
- 10. Wrigh AC, Sinclair RN, Shaw JL, Haworth R, Marasinghe GK, Day DE (2008) A neutron diffraction study of the structure of iron phosphate glasses. Phys Chem Glasses: Eur J Glass Sci Technol B 49:1–7
Typ dokumentu
Bibliografia
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bwmeta1.element.baztech-article-BUJ8-0025-0047