Author/Authors :
Le Saout، نويسنده , , Gwenn and Fayon، نويسنده , , Franck and Bessada، نويسنده , , Catherine Stevens-Simon، نويسنده , , Patrick and Blin، نويسنده , , Annie and Vaills، نويسنده , , Yann، نويسنده ,
Abstract :
The structure of ternary PbOx–ZnO(0.6−x)–(P2O5)0.4 glasses has been investigated using nuclear magnetic resonance (NMR), Raman scattering and infrared spectroscopy (IR), over the compositional range from x=0 to 0.6. The evolution of the 31P NMR chemical shift and Raman high-frequency modes reflects mainly the Zn/Pb substitution in these glasses. The NMR and Raman spectra show that at high ZnO content, the phosphate network has a strong interaction with Zn cations through P–O–Zn bonds. In glasses with high lead content, IR reflectivity spectra indicate that the phosphate network and lead cation are less correlated and that Pb2+ has a mixed network former–network modifier role in the glass structure.
