Title :

Properties and structure of ternary BaO−SnO−P2O5 glasses

Author(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

Journal title :

Journal of Non-Crystalline Solids

Abbreviated title :

Journal of Non-Crystalline Solids

Volume number :

597

Pages :

121909

Publication date :

2022-12-01

ISSN :

0022-3093

Keyword(s) :

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

HAL domain(s) :

Planète et Univers [physics]/Sciences de la Terre

English abstract : [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, ...
Show more >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.Show less >

Audience :

Non spécifiée

Popular science :

Non

Collections :

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

Research team(s) :

Propriétés magnéto structurales des matériaux (PMSM)

Submission date :

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