Environmental structure around germanium atoms in GeO₂-P₂O₅ glasses by the anomalous X-ray scattering method

The anomalous X-ray scattering (AXS) technique is applied to obtained the environmental radial distribution functions (RDFs) around germanium atoms in glassy (1-x)GeO₂, XP₂O₅ (x-0.10,0.18 and 0.28), from the intensities measured at the Ge K absorption edge using synchrotron radiation. The The analysis of the shape of the RDI's shows that the distance of Ge-O pairs increases with addition of P₂O₅ and the number of coordinated oxygen atoms around germanium atoms also increases from four with the addition.