TY - JOUR
T1 - Atomic ordering in xGa2O3·(100-x)TeO2 glasses (x = 10, 17.5, 25) by X-ray diffraction
AU - Petkov, V.
AU - Stachs, O.
AU - Gerber, Th
AU - Ilieva, D.
AU - Dimitriev, Y.
N1 - Funding Information:
The financial support of Alexander von Humboldt Stiftung to one of the authors (V.P.) is gratefully acknowledged. The support of BMBF (Grant 03Ge4ROK4 & LPD 1997) is also gratefully acknowledged. Thanks are due to Dr D. Novikov from DESY, Hamburg for the help with the X-ray diffraction experiments.
PY - 1999/6/1
Y1 - 1999/6/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0032650313&partnerID=8YFLogxK
U2 - 10.1016/S0022-3093(99)00091-5
DO - 10.1016/S0022-3093(99)00091-5
M3 - Article
AN - SCOPUS:0032650313
VL - 248
SP - 65
EP - 74
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
IS - 1
ER -