On the structure of Ge-As-Te-Cu glasses

Pál Jóvári, Pierre Lucas, Zhiyong Yang, Bruno Bureau, Ivan Kaban, Brigitte Beuneu, Claudia Pantalei, Jozef Bednarčik

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Short range order in glassy 0.9(Ge0.1As0.15Te0.75)-0.1Cu (GATC1) and 0.9(Ge0.05As0.55Te0.4)-0.1Cu (GATC2) was studied by neutron- and X-ray diffraction as well as EXAFS (extended X-ray absorption fine structure) measurements at the K-edges of all components. The reverse Monte Carlo simulation technique was used to create models consistent with all experimental datasets. It was found that Cu binds predominantly to Te in GATC1 while Cu-As and Cu-Cu bonding is also significant in GATC2. Ge and As atoms have 4 and 3 Ge/As/Te neighbors in both compositions. In GATC1 the formation of 'extra' Te-Te bonds can be observed, similarly to GeTe4-AgI glasses.

Original languageEnglish (US)
Pages (from-to)1-5
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume433
DOIs
StatePublished - Feb 1 2016

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Keywords

  • EXAFS
  • Glass structure
  • Infrared glasses
  • Neutron diffraction
  • Reverse Monte Carlo simulation
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Jóvári, P., Lucas, P., Yang, Z., Bureau, B., Kaban, I., Beuneu, B., Pantalei, C., & Bednarčik, J. (2016). On the structure of Ge-As-Te-Cu glasses. Journal of Non-Crystalline Solids, 433, 1-5. https://doi.org/10.1016/j.jnoncrysol.2015.11.003