Properties and structure of lanthanum phosphate glasses

Richardk Brow, Ezzeldin Metwalli, Davidl Sidebottom

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Abstract

Glasses were prepared from the system xLa2O3·(1-x)P2O5, where 0.00≤x≤0.30 (mole fraction), and densities, refractive indices and glass transition temperatures were determined. Inflections in the property/composition trends were observed at x approximately 0.15 La2O3. Raman spectra indicate that the phosphate network evolves from a cross-linked ultraphosphate to chain-like metaphosphate with increasing x. The property and spectral trends are interpreted with respect to the La-coordination environment, which appears to change from isolated La-polyhedra to a La-O-La subnetwork when x≥0.15.

Original languageEnglish (US)
Pages (from-to)88-94
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4102
DOIs
StatePublished - Jan 1 2000

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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