A comparative study of the structure of sodium borophosphates made by sol-gel and melt-quench methods

Dong Qiu, Richard A. Martin, Jonathan C. Knowles, Mark E. Smith, Robert J. Newport

Research output: Contribution to journalArticlepeer-review

Abstract

The atomic scale structure of sodium borophosphates made by the sol-gel method is compared to those made by the melt-quench method. It is found that although the sol-gel generated materials have a higher tendency towards crystallization, they nevertheless show a qualitatively similar crystallization trend with composition to their melt-quench analogues; the progressive introduction of boron oxide into the phosphate network initially inhibits then promotes crystallization. At the composition associated with the most stable amorphous sodium borophosphate (20 mol% boron oxide), it is found that the atomic scale structure of the sol-gel synthesized network glass is almost identical to that of the corresponding melt-quenched one.
Original languageEnglish
Pages (from-to)490-494
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume356
Issue number9-10
Early online date7 Jan 2010
DOIs
Publication statusPublished - 15 Mar 2010

Keywords

  • sychrotron radiation
  • x-ray diffraction
  • borates
  • phosphates
  • sol–gels
  • xerogels

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