Pressure-induced silicon coordination and tetrahedral structural changes in alkali oxide-silica melts up to 12 GPa: NMR, Raman, and infrared spectroscopy

Xue Xianyu Xue, J. F. Stebbins, Masami Kanzaki, P. F. McMillan, B. Poe

Research output: Contribution to journalArticle

252 Citations (Scopus)

Abstract

The 29Si and 23Na NMR, Raman, and infrared spectra of glasses quenched from liquids at pressures up to 12 GPa for three alkali silicate compositions (Na2Si2O5, Na2Si4O9, K2Si4 O9) and silica (SiO2) reveal systematic changes in the melt structure with pressure. The most novel change is the occurrence of [5]Si and [6]Si species at high pressures identified by peaks in the 29Si MAS NMR spectra of the alkali silicate glasses. -from Authors

Original languageEnglish
Pages (from-to)8-26
Number of pages19
JournalAmerican Mineralogist
Volume76
Issue number1-2
Publication statusPublished - 1991
Externally publishedYes

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Alkalies
Raman spectroscopy
Silicon
infrared spectroscopy
structural change
Silicon Dioxide
Oxides
Nuclear magnetic resonance spectroscopy
silicon
nuclear magnetic resonance
Silicates
Infrared spectroscopy
alkalies
silicates
silicate
silica
glass
melt
oxide
silicon dioxide

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Pressure-induced silicon coordination and tetrahedral structural changes in alkali oxide-silica melts up to 12 GPa : NMR, Raman, and infrared spectroscopy. / Xianyu Xue, Xue; Stebbins, J. F.; Kanzaki, Masami; McMillan, P. F.; Poe, B.

In: American Mineralogist, Vol. 76, No. 1-2, 1991, p. 8-26.

Research output: Contribution to journalArticle

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AU - Xianyu Xue, Xue

AU - Stebbins, J. F.

AU - Kanzaki, Masami

AU - McMillan, P. F.

AU - Poe, B.

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