The structure of confined oxygen in silica xerogels

B. S. Schirato, M. P. Fang, P. E. Sokol, Sridhar Komarneni

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

The microscopic structure of oxygen confined in silica xerogels has been studied as a function of temperature. In large pores, a crystalline solid forms with a structure consistent with that of the bulk. The size of the crystallites is much larger than the pore size, indicating that cooperative effects among pores are important in freezing. As the pore size is decreased, a crossover occurs where solidification results in an amorphous phase in the pores. The resulting amorphous phase is solid but is less ordered than the liquid phase.

Original languageEnglish (US)
Pages (from-to)369-371
Number of pages3
JournalScience
Volume267
Issue number5196
DOIs
StatePublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • General

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