Atomic ordering in xGa2O3·(100-x)TeO2 glasses (x = 10, 17.5, 25) by X-ray diffraction

V. Petkov, O. Stachs, Th Gerber, D. Ilieva, Y. Dimitriev

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Atomic distribution functions for xGa2O3·(100-x)TeO2 glasses (x = 10, 17.5, 25) have been obtained from diffraction experiments employing a synchrotron radiation source. First neighbour atomic distances and coordination numbers in the glasses investigated have been determined by decomposing the experimental atomic distribution functions into a set of Gaussians each pertaining to a particular type of atomic pairs. It has been found that xGa2O3·(100-x)TeO2 glasses (x = 10, 17.5, 25) may well be described as an assembly of tetrahedral GaO4 units uniformly embedded into a matrix of more (TeO3+1) or less distorted (TeO4) trigonal bipyramids where each Te in a perfect TeO4 bipyramid is surrounded by four oxygens distributed over equatorial and axial positions and each Te in a distorted TeO3+1 bipyramid has one of its axial Te-O bonds considerably elongated.

Original languageEnglish
Pages (from-to)65-74
Number of pages10
JournalJournal of Non-Crystalline Solids
Volume248
Issue number1
DOIs
StatePublished - Jun 1 1999

Fingerprint

Dive into the research topics of 'Atomic ordering in xGa2O3·(100-x)TeO2 glasses (x = 10, 17.5, 25) by X-ray diffraction'. Together they form a unique fingerprint.

Cite this