The Cu and Te coordination environments in Cu-doped GeTe glasses

L. Rátkai, A. P. Gonçalves, G. Delaizir, C. Godart, I. Kaban, B. Beuneu, P. Jóvári

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The structure of Ge20Te80, Ge15Cu 8Te77 and Ge15Cu5Te80 glasses was investigated by diffraction techniques and extended X-ray absorption fine structure measurements. Large structural models were generated by fitting experimental data by the reverse Monte Carlo simulation technique. In Ge 20Te80 glass, both Ge and Te obey the 8-N rule, and the structure is built up of GeTe4 tetrahedra connected via TeTe bonding or shared Te atoms connected to two Ge atoms. The coordination number of Te is significantly higher than 2 in Ge15Cu8Te77. The average coordination number of Cu is 3.41±1 in this alloy. In Ge 15Cu5Te80 glass, Cu binds mostly to Te, while CuCu bonding is significant in Ge15Cu8Te77.

Original languageEnglish
Pages (from-to)1524-1527
Number of pages4
JournalSolid State Communications
Volume151
Issue number21
DOIs
Publication statusPublished - Nov 1 2011

Keywords

  • A. Disordered systems
  • A. Semiconductors
  • E. Neutron scattering
  • E. Synchrotron radiation

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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    Rátkai, L., Gonçalves, A. P., Delaizir, G., Godart, C., Kaban, I., Beuneu, B., & Jóvári, P. (2011). The Cu and Te coordination environments in Cu-doped GeTe glasses. Solid State Communications, 151(21), 1524-1527. https://doi.org/10.1016/j.ssc.2011.07.037