Infrared spectroscopy of germanium dioxide (GeO2) glass at high pressure

P. V. Teredesai, D. T. Anderson, N. Hauser, K. Lantzky, Jeffery Yarger

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Room temperature infrared studies have been performed on GeO2 glass under quasi-hydrostatic pressures of 9.5 GPa. The mid-infrared absorption spectrum of GeO2 glass (g-GeO2) shows two distinct vibrational modes, one at 560 cm-1 (mid frequency peak) and another at 870 cm-1 (high frequency peak). At pressures above 6 GPa, these two absorption peaks broaden and intensity in the region between them (∼700 cm-1) increases dramatically. We interpret this change in the infrared spectrum at high pressure as the onset and progression of the amorphous to amorphous transformation from a low-density tetrahedral glass to a high density octahedral network glass.

Original languageEnglish (US)
Pages (from-to)345-349
Number of pages5
JournalPhysics and Chemistry of Glasses
Volume46
Issue number4
StatePublished - Aug 1 2005

ASJC Scopus subject areas

  • Ceramics and Composites
  • Physical and Theoretical Chemistry

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    Teredesai, P. V., Anderson, D. T., Hauser, N., Lantzky, K., & Yarger, J. (2005). Infrared spectroscopy of germanium dioxide (GeO2) glass at high pressure. Physics and Chemistry of Glasses, 46(4), 345-349.