Structure of bismuth borate glasses

Authors
Stone, CE Wright, AC Sinclair, RN Feller, SA Affatigato, M Hogan, DL Nelson, ND Vira, C Dimitriev, YB Gattef, EM Ehrt, D
Citation
Ce. Stone et al., Structure of bismuth borate glasses, PHYS C GLAS, 41(6), 2000, pp. 409-412
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
PHYSICS AND CHEMISTRY OF GLASSES
ISSN journal
00319090 → ACNP
Volume
41
Issue
6
Year of publication
2000
Pages
409 - 412
Database
ISI
SICI code
0031-9090(200012)41:6<409:SOBBG>2.0.ZU;2-H
Abstract
A neutron diffraction investigation of glasses in the Bi2O3-B2O3 system has been performed as a function of composition which confirms an earlier infr ared study suggesting that BO4 tetrahedra are present throughout the glass formation range. The B-O bond length distribution is asymmetric and the fra ction of fourfold coordinated boron atoms x(4), does not vary greatly (0.38 -0.48+/-0.07) over the range 31-67 mol% Bi2O3. There are indications that superstructural units may be present even at high Bi2O3 contents.