Structural changes in vitreous boron oxide

J. D. Nicholas, R. E. Youngman, S. V. Sinogeikin, Jay D Bass, J. Kieffer

Research output: Contribution to journalArticlepeer-review

Abstract

Brillouin spectroscopy has been used to measure the compressional and shear sound velocities of vitreous boron oxide (B2O3) under nonhydrostatic and quasi-hydrostatic conditions up to 18·8 and 13·5 GPa, respectively. Our experiments confirmed a pronounced velocity-pressure hysteresis and careful preparation of an anhydrous sample showed that this hysteresis was not due to the presence of water in B 2O3. Further, upon decreasing pressure our results are consistent with a discontinuous drop in the compressional and shear velocity near 3 GPa. We believe that this discontinuity may be the result of a structural transition between two vitreous polymorphs.

Original languageEnglish (US)
Pages (from-to)249-251
Number of pages3
JournalPhysics and Chemistry of Glasses
Volume44
Issue number3
StatePublished - Jun 2003

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Ceramics and Composites

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