Local structure around Ge in lithium germanate glasses analyzed by AXS and EXAFS techniques

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3 Citations (Scopus)

Abstract

The local structure around Ge in xLi2O-(1 - x)GeO2 (x = 0, 0.17, 0.20, 0.24) glasses was investigated using AXS and EXAFS measurements. The averaged coordination number of the first nearest Ge-O pair increased with increasing Li2O content up to 24 mol% and the amount of six-coordinated Ge was proportional to Li2O content. The introduction of a GeO6 unit is suggested to be one of the most fundamental structural changes accompanying the so-called germanate anomaly detected in density measurements of alkali-germanate glasses.

Original languageEnglish
Pages (from-to)60-64
Number of pages5
JournalJournal of Mineralogical and Petrological Sciences
Volume110
Issue number2
DOIs
Publication statusPublished - 2015

Keywords

  • Anomalous X-ray scattering
  • EXAFS
  • Lithium germanate glass
  • Local structure

ASJC Scopus subject areas

  • Geophysics
  • Geology

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