Solid-state NMR investigation of mixed-alkali distribution in phosphate glasses

S. Prabakar, K. T. Mueller

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


The correlation between 31P and 23Na (or 133Cs) nuclei in a mixed-alkali phosphate glass has been investigated by TRAnsfer of Populations by DOuble Resonance (TRAPDOR) NMR spectroscopy. The variation in spatial proximity between 31P nuclei in phosphate tetrahedra and sodium (or cesium) modifier ions has been demonstrated in a phosphate glass with molar composition 25 Cs2O: 31 Na2O: 44P2O5. Interactions between 31P and 23Na (or 133Cs) nuclei are shown to exist even at low dephasing times indicating the short-range nature of these couplings. The ratios of resonance intensities from Q1 and Q2 phosphate units show different trends depending on whether couplings to 23Na or 133Cs are investigated, demonstrating the differing structural roles of the modifier alkali cations within the glass.

Original languageEnglish (US)
Pages (from-to)GG3201-GG3206
JournalMaterials Research Society Symposium - Proceedings
StatePublished - 2001
EventSolid - State Chemistry of Inorganic Materials III - Boston, MA, United States
Duration: Nov 27 2000Nov 30 2000

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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