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Comparison of the low-Q features in diffraction data for silicate glasses and crystals containing Sr or Ba
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TLDR
In this article, the authors compared the diffraction data at the smaller scattering vectors, Q, with simulated X-ray and neutron diffraction patterns for compositionally similar crystals and suggested that the smaller Q features in the glasses have similar structural origins to those in the scattering data for the crystals with the same composition.Abstract:
Neutron scattering data have been obtained for a strontium- and a barium-containing silicate glass and a strontium aluminosilicate glass. These data are compared with previously published anomalous wide-angle X-ray scattering data for the Sr-containing glasses. Features in the diffraction data at the smaller scattering vectors, Q , are compared with simulated X-ray and neutron diffraction patterns for compositionally similar crystals. Peaks are found at Q s close to the `first sharp diffraction peaks' of the glasses and have a cation–cation dependence. We suggest that this correspondence shows that the smaller Q features in the glasses have similar structural origins to those in the scattering data for the crystals with the same composition and therefore that the medium-range structures and cation–cation arrangements in the glasses are similar too.read more
Citations
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Journal ArticleDOI
Compositional dependence of the first sharp diffraction peaks in alkali silicate glasses: A molecular dynamics study
Jincheng Du,L. René Corrales +1 more
TL;DR: In this article, the compositional dependence of the first sharp diffraction peaks (FSDPs) of lithium, sodium and potassium silicate glasses were studied by calculating the neutron static structure factors.
Journal ArticleDOI
Environments of Mg and Al in MgO-Al2O3-SiO2 glasses: A study coupling neutron and X-ray diffraction and Reverse Monte Carlo modeling
Marie Guignard,Laurent Cormier +1 more
TL;DR: In this paper, the structure of six glass compositions in the MgO-Al2O3-SiO2 system was investigated using neutron and X-ray diffraction.
Journal ArticleDOI
Structure analyses of Ba-silicate glasses
H. Schlenz,Armin Kirfel,K. Schulmeister,N. Wartner,Werner Mader,W. Raberg,Klaus Wandelt,C. Oligschleger,S. Bender,R. Franke,Josef Hormes,Wilfried Hoffbauer,V. Lansmann,Martin Jansen,Nikolay Zotov,Christel M. Marian,H. Putz,Jörg Neuefeind +17 more
TL;DR: In this article, the influence of the network modifier BaO. 3 at.% carbon on the structure of four different Ba-silicate glasses was analyzed applying a broad spectrum of diffraction and spectroscopic methods, atomic force microscopy and computer simulations.
Journal ArticleDOI
Ring size distribution in silicate glasses revealed by neutron scattering first sharp diffraction peak analysis
Ying Shi,Jörg Neuefeind,Dong Ma,Katharine Page,Lisa Ann Lamberson,Nicholas J. Smith,Adama Tandia,Albert P. Song +7 more
TL;DR: In this article, a heuristic method was proposed to extract ring structure information from the first sharp diffraction peak (FSDP) of the neutron scattering structure factor for 81 commercially important silicate glasses, which can be consistently represented by a sum of three compressed exponentially decaying sine functions with three fixed periodicities.
Journal ArticleDOI
Structural investigations of celsian glass derived from Ba-LTA zeolite
TL;DR: In this paper, the structure of stoichiometric celsian glass was investigated by 29Si MAS NMR and IR spectroscopies and reverse====== Monte Carlo (RMC) simulation of X-ray diffraction data.
References
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Journal ArticleDOI
The origin of the first sharp diffraction peak in the structure factor of covalent glasses and liquids
TL;DR: In this paper, the first sharp diffraction peak (FSDP) in the structure factor of network glasses and liquids is a pre-peak in the concentration-concentration structure factor due to the chemical ordering of interstitial voids around cation-centred clusters in the network structure.
Journal ArticleDOI
Medium-Range Order in Silica, the Canonical Network Glass
P. H. Gaskell,David J. Wallis +1 more
TL;DR: In this paper, a correspondence between FSDPs in glasses and crystals and examine anisotropic scattering from atomic models for silica, the prototypical network glass, can be understood through local structural parameters.
Journal ArticleDOI
Modelling the silica glass structure by the Rietveld method
TL;DR: In this paper, a microstrained crystalline model derived from the α-carnegieite structure was used to refine amorphous structures like crystalline ones, and the agreement R χ factors were the best ever obtained with a small-size model built exclusively from [SiO 4 ] tetrahedra linked by corners.
Journal ArticleDOI
Neutron and X-ray amorphography
TL;DR: In this article, a brief account of the use of neutron and X-ray diffraction techniques in studying the structure of amorphous solids is presented, with an emphasis on the exact nature of the information provided by diffraction measurements and on the correct methods of extracting structural parameters from experimental data.
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