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Structures of lanthanum and yttrium aluminosilicate glasses determined by X-ray and neutron diffraction |
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| Authors: | I. Pozdnyakova N. Sadiki V. Cristiglio G.J. Cuello D.L. Price |
| Affiliation: | a CNRS-CRMHT, 1d avenue de la Recherche Scientifique, 45071 Orléans cedex 2, France b PROMES, Rambla de la Thermodynamique, Tecnosud, 66100 Perpignan, France c ILL, 6 rue Jules Horowitz, BP 156, 38042 Grenoble cedex 9, France d ESRF, 6 rue Jules Horowitz, BP 220, 38043 Grenoble cedex, France |
| Abstract: | We have measured the structures of lanthanum and yttrium aluminosilicate glasses by X-ray and neutron diffraction and determined the interatomic distances and nearest-neighbor coordination numbers. The results obtained with the two techniques are in good agreement with each other and with recent NMR studies. The Si-O and Al-O coordination numbers are found to be 4 and 4.5, respectively. All the glasses show pronounced intermediate-range order that exhibits a reduced length scale with increasing La or Y content. |
| Keywords: | 61.10.&minus i 61.12.&minus q 61.43.Fs |
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