## Abstract

Atomic distribution functions for _{x}Ga_{2}O_{3}·(100-x)TeO_{2} 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 _{x}Ga_{2}O_{3}·(100-x)TeO_{2} glasses (x = 10, 17.5, 25) may well be described as an assembly of tetrahedral GaO_{4} units uniformly embedded into a matrix of more (TeO_{3+1}) or less distorted (TeO_{4}) trigonal bipyramids where each Te in a perfect TeO_{4} bipyramid is surrounded by four oxygens distributed over equatorial and axial positions and each Te in a distorted TeO_{3+1} bipyramid has one of its axial Te-O bonds considerably elongated.

Original language | English |
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Pages (from-to) | 65-74 |

Number of pages | 10 |

Journal | Journal of Non-Crystalline Solids |

Volume | 248 |

Issue number | 1 |

DOIs | |

State | Published - Jun 1 1999 |

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