Raman spectroscopic study of hydrogen-containing vitreous silica

Steen, G.H.A.M. van der; Boom, H. van den

doi:10.1016/0022-3093(77)90010-2

Cited by 37 publications

(17 citation statements)

References 4 publications

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“…Although the experiments in this study were performed on glasses and not on silica liquids, the results are qualitatively similar to those obtained from glasses which were molten at 1 bar under a pure H 2 atmosphere [21].…”

Section: Discussionsupporting

confidence: 70%

“…The asymmetrical band at 2255 cm −1 ( Fig. 1(b)), present in the hydrogenated glass has been previously detected in the Raman spectra of H 2 -bearing silica glass [21] and was attributed to Si-H stretching vibrations. The band at 2327 cm −1 (located here on the high frequency tail of the SiH band) is attributed to molecular N 2 of the air in the laboratory and is present in every Raman spectrum, collected in this frequency range.…”

Section: Resultssupporting

confidence: 57%

“…The higher frequency region ( Fig. 1(a)) of the spectrum of the hydrogenated sample (Q6-IW) contains a band at 4136 cm −1 , which is attributed to the stretching mode of molecular H 2 dissolved in the glass [21,22]. At around 3700 cm −1 , a band can be detected which can be assigned to O-H stretching vibrations of SiOH groups (e.g.…”

Section: Resultsmentioning

confidence: 99%

“…Faile and co-workers [18,19,20] showed that hydrogen impregnated silica glasses suppress the formation of color centers caused by neutron and gamma irradiation. Dissolution mechanisms of H 2 in vitreous silica were studied on samples quenched from silica liquids (T > 1750°C) molten in presence of H 2 -containing atmospheres [1,21], on silica glasses impregnated with H 2 at temperatures below 225°C and hydrogen pressures ranging from 1 to 860 bars [1,22,23,24] or on samples hydrogenated at P H2 =1 bar and temperatures up to 900°C [25]. These studies showed that hydrogen can dissolve 'physically' as molecular H 2 in the interstices of the silicate network, but also 'chemically' due to the dissociation of H 2 molecules and the formation of hydroxyl groups (OH) and hydrides (SiH).…”

Section: Introductionmentioning

confidence: 99%

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Incorporation of H2 in vitreous silica, qualitative and quantitative determination from Raman and infrared spectroscopy

Schmidt

Holtz

Bény

1998

Journal of Non-Crystalline Solids

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Incorporation mechanisms of H 2 in silica glass were studied with Raman and infrared (IR) microspectroscopy. Hydrogenated samples were prepared at temperatures between 800°C and 955°C at 2 kbar total pressure. Hydrogen fugacities (f H2 ) were controlled using the double capsule technique with the iron-wüstite (IW) buffer assemblage generating f H2 of 1290-1370 bars corresponding to H 2 partial pressures (P H2 ) of 960-975 bars. We found that silica glass hydrogenated under such conditions contains molecular hydrogen (H 2 ) in addition to SiH and SiOH groups. H 2 molecules dissolved in the quenched glasses introduce a band at 4136 cmin the Raman spectra which in comparison to that of gaseous H 2 is wider and is shifted to lower frequency. IR spectra of hydrogenated samples contain a band at 4138 cm −1 which we assign to the stretching vibration of H 2 molecules located in non-centrosymmetric sites. The Raman and IR spectra indicate that the dissolved H 2 molecules interact with the silicate network. We suggest that the H 2 band is the envelope of at least three components due to the occupation of at least three different interstitial sites by H 2 molecules. Both, Raman and IR spectra of hydrogenated glasses contain bands at 2255 cm −1 which may be due to the vibration of SiH groups. Under the assumption that the reaction Si-O-Si + H 2 → Si-H + Si-O-H describes adequately the 'chemical dissolution' of H 2 molecules, the SiH concentrations in our samples were determined and the molar extinction coefficient for the SiH absorption band in the infrared ( 2255 (SiH)) could then be estimated to be 45 ± 3 l/mol cm. The solubility of molecular H 2 in our hydrogenated samples was determined using the IR absorption band at 4138 cm −1 and the extinction coefficient given by Shelby [J. Non-Cryst. Solids 179 (1994) 138]. Samples quenched with different cooling rates gave nearly identical Raman and IR spectra, suggesting that the chemical dissolution of hydrogen (SiH and SiOH) can be quenched to room temperature without changing relative concentrations and that no exsolution of hydrogen occurred during the quench.

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Section: Discussionsupporting

confidence: 70%

Section: Resultssupporting

confidence: 57%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Incorporation of H2 in vitreous silica, qualitative and quantitative determination from Raman and infrared spectroscopy

Schmidt

Holtz

Bény

1998

Journal of Non-Crystalline Solids

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“…The band at %2270 cm À1 is well established as due to Si-H in the glass [19][20][21]. This band occurs at almost the same frequency as a band at %2260 cm À1 , which is due to the first overtone of the fundamental Si-O-Si stretching vibration at %1120 cm À1 [22].…”

Section: Infrared Spectramentioning

confidence: 90%

Annealing of hydrogen-impregnated and irradiated vitreous silica

Birtch¹,

Shelby²

2004

Journal of Non-Crystalline Solids

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Raman scattering in optical fibers

Lan

Banerjee

Mitra

1981

J Raman Spectroscopy

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In this paper we review the light scattering spectra of optical fibers and present new data on Raman spectra of optical fibers. The results include Raman spectra of fused silica fibers and effects of dopants and irradiation. Large scattering volumes available in optical fibers afford one to detect low dopant concentrations and relatively weak second order spectra. Low frequency Raman spectra of optical fibers shows the expected non-Debye type anomaly.

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Raman spectroscopic study of hydrogen-containing vitreous silica

Cited by 37 publications

References 4 publications

Incorporation of H2 in vitreous silica, qualitative and quantitative determination from Raman and infrared spectroscopy

Incorporation of H2 in vitreous silica, qualitative and quantitative determination from Raman and infrared spectroscopy

Annealing of hydrogen-impregnated and irradiated vitreous silica

Raman scattering in optical fibers

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