Short range order of As40-xCuxTe60 glasses

P. Jóvári, A. Piarristeguy, J. B. Vaney, I. Kaban, A. Zitolo, B. Beuneu, J. Bednarčik, G. Delaizir, J. Monnier, A. P. Gonçalves, C. Candolfi

Research output: Contribution to journalArticle

Abstract

Short range order of As40-xCuxTe60 (x = 0, 10, 20, 25, 30) glasses was studied by neutron- and X-ray diffraction, combined with extended X-ray absorption fine structure (EXAFS) measurements at the K-edges of all components. Large-scale structural models were generated by fitting the experimental datasets simultaneously in the framework of the reverse Monte Carlo simulation technique. These simulations revealed that As and Te atoms bind to about 3 and 2 As/Te neighbors, respectively, both of which possess Cu neighbors. The Cu–Te bond length is 2.57 ± 0.02 Å while the Cu–As distance is as high as 2.86 ± 0.04 Å. The results further showed that besides As and Te, Cu atoms also bind to Cu. The total coordination number of Cu is significantly higher than 4 for the compositions x = 25 and 30.

Original languageEnglish
Pages (from-to)202-207
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume481
DOIs
Publication statusPublished - Feb 1 2018

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Keywords

  • Diffraction
  • EXAFS
  • Glass
  • Modeling
  • Reverse Monte Carlo

ASJC Scopus subject areas

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

Cite this

Jóvári, P., Piarristeguy, A., Vaney, J. B., Kaban, I., Zitolo, A., Beuneu, B., Bednarčik, J., Delaizir, G., Monnier, J., Gonçalves, A. P., & Candolfi, C. (2018). Short range order of As40-xCuxTe60 glasses. Journal of Non-Crystalline Solids, 481, 202-207. https://doi.org/10.1016/j.jnoncrysol.2017.10.046