Iron-soda-silica glasses: Preparation, properties, structure

Montenero, A.; Friggeri, Marco; Giori, D. C.; Belkhiria, N.; Pye, L. D.

doi:10.1016/0022-3093(86)90761-1

Cited by 56 publications

(40 citation statements)

References 19 publications

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“…In aluminosilicate glasses Fe 3 and Al 3 can occupy octahedral and/or tetrahedral sites. In silicate glasses Fe 3 ions are mainly in tetrahedral sites [1±5].…”

Section: Introductionmentioning

confidence: 99%

Infrared and Mössbauer studies of iron in aluminosilicate glasses

Silva

Costa

2001

Journal of Non-Crystalline Solids

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Samples of 10Fe 2 O 3 Á 10Al 2 O 3 Á 80SiO 2 composition were prepared by the sol±gel method and heat-treated between 120 and 1300°C under oxidising (air) conditions. These samples were studied by Fourier transformer infrared (FTIR) and M ossbauer spectroscopy. The results indicate that Fe 3 is in octahedral sites at 250°C and in tetrahedral sites between 500 and 1300°C. Goethite and hematite particles are present in the 250 and 500°C samples and hematite particles in the samples heat-treated between 1000 and 1300°C. The hematite particles, present in the samples, show a lower hyper®ne ®eld (47:91 AE 0:08 T) than that usually seen for hematite (51.5 T). This is due to the fact of Al 3 ions take the place of Fe 3 ions in hematite particles. Ó

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“…In aluminosilicate glasses Fe 3 and Al 3 can occupy octahedral and/or tetrahedral sites. In silicate glasses Fe 3 ions are mainly in tetrahedral sites [1±5].…”

Section: Introductionmentioning

confidence: 99%

Infrared and Mössbauer studies of iron in aluminosilicate glasses

Silva

Costa

2001

Journal of Non-Crystalline Solids

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“…The iron is present in glasses as Fe +2 and Fe +3 ions, both of which can exist in tetrahedral and octahedral sites [20][21][22][23][24][25]. Each redox and coordination state produces its own set of characteristic optical absorption bands.…”

Section: Uv-vis Spectroscopymentioning

confidence: 99%

“…Each redox and coordination state produces its own set of characteristic optical absorption bands. The majority of Fe +3 ions are believed to occupy tetrahedral network-forming sites in glasses, although this has been disputed [20][21][22][23].…”

Section: Uv-vis Spectroscopymentioning

confidence: 99%

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FTIR, Raman, and UV-Vis spectroscopic and DFT investigations of the structure of iron–lead–tellurate glasses

2010

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“…The majority of Fe ions are believed by many authors to occupy tetrahedral network-forming sites in silicate glasses [10,11,14], although this has been disputed. Conversely, the majority of Fe 2+ ions are thought to occupy octahedral network--modifying sites [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Absorption Studies on Some Silicate and Cabal Glasses Containing NiO or Fe₂O₃or Mixed NiOi + Fe₂O₃

et al. 2010

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Ultraviolet and visible absorption of some sodium and potassium silicate and cabal glasses containing nickel oxide, ferric oxide or both nickel and ferric oxides together have been investigated. In alkali silicate glasses, nickel ions reveal no ultraviolet absorption bands but they show characteristic visible absorption bands due to octahedral and tetrahedral coordinations while iron ions show weak visible absorption bands which are related to ferric ions mostly in tetrahedral state, especially at high alkali oxide content; also iron ions reveal charge transfer ultraviolet absorption bands which are assigned mostly to ferric ions with few ferrous contributions. The proportion of tetrahedral state increases with the increase in the alkali oxide content for the two transition metal oxides. In cabal glasses, nickel ions tend to exist mostly in octahedral state, while ferric ions exist mostly in octahedral and some in tetrahedral form, all the absorption obtained are attributed to their respective energy levels. The ratio of the different coordinations states are discussed in relation to the glass composition.

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Iron-soda-silica glasses: Preparation, properties, structure

Cited by 56 publications

References 19 publications

Infrared and Mössbauer studies of iron in aluminosilicate glasses

Infrared and Mössbauer studies of iron in aluminosilicate glasses

FTIR, Raman, and UV-Vis spectroscopic and DFT investigations of the structure of iron–lead–tellurate glasses

Absorption Studies on Some Silicate and Cabal Glasses Containing NiO or Fe₂O₃or Mixed NiOi + Fe₂O₃

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Iron-soda-silica glasses: Preparation, properties, structure

Cited by 56 publications

References 19 publications

Infrared and Mössbauer studies of iron in aluminosilicate glasses

Infrared and Mössbauer studies of iron in aluminosilicate glasses

FTIR, Raman, and UV-Vis spectroscopic and DFT investigations of the structure of iron–lead–tellurate glasses

Absorption Studies on Some Silicate and Cabal Glasses Containing NiO or Fe2O3or Mixed NiOi + Fe2O3

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Absorption Studies on Some Silicate and Cabal Glasses Containing NiO or Fe₂O₃or Mixed NiOi + Fe₂O₃