Titre :

Properties and structure of ternary BaO−SnO−P2O5 glasses

Auteur(s) :

Hoppe, Uwe [Auteur]
Universität Rostock
Saitoh, Akira [Auteur]
Ehime University [Matsuyama, Japon]
Shimizu, Tatsuki [Auteur]
Ehime University [Matsuyama, Japon]
Tricot, Grégory [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Hannon, Alex C. [Auteur]
ISIS Facility

Titre de la revue :

Journal of Non-Crystalline Solids

Nom court de la revue :

Journal of Non-Crystalline Solids

Numéro :

597

Pagination :

121909

Date de publication :

2022-12-01

ISSN :

0022-3093

Mot(s)-clé(s) :

31P magic angle spinning - nuclear magnetic resonance
Medium-range order
Neutron diffraction
Photoelastic constant
Short-range order
Tin barium phosphate glasses

Discipline(s) HAL :

Planète et Univers [physics]/Sciences de la Terre

Résumé en anglais : [en]

Series of Ba/Sn phosphate glasses (33 and 40 mol% P2O5) are investigated by 31P MAS NMR and neutron diffraction to clarify the effects of substituting Sn with Ba. The structural parameters are related to glass properties, ...
Lire la suite >Series of Ba/Sn phosphate glasses (33 and 40 mol% P2O5) are investigated by 31P MAS NMR and neutron diffraction to clarify the effects of substituting Sn with Ba. The structural parameters are related to glass properties, among them to the photoelastic constant (PEC). Different from the increase of the Sn−O coordination number to four in Zn/Sn phosphate glasses (33 mol% P2O5) the NSnOs of 3.2 and 3.4 do not change with substituting Sn with Ba. The stacking of layer-like entities of Sn or Ba oxygen polyhedra is suggested to cause the first scattering peak at 12 nm−1. Non-bridging oxygens shared by two or more Ba2+ lead to stiff networks with increasing BaO content which is accompanied with increasing Tg, decreasing thermal expansion, and better corrosion resistance. The slopes of the compositional dependence of the PEC of the Ba/Sn glasses are smaller than reported for Zn/Sn glasses which corresponds to the constant NSnOs.Lire moins >

Audience :

Non spécifiée

Vulgarisation :

Non

Collections :

• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Équipe(s) de recherche :

Propriétés magnéto structurales des matériaux (PMSM)

Date de dépôt :

2024-02-21T17:11:51Z
2024-02-23T14:21:01Z