The effect of oxide additions on medium-range order structures in borosilicate glasses

Parkinson, B. G. and Holland, D. and Smith, Mark E. and Howes, A. P. and Scales, C. R. (2007) The effect of oxide additions on medium-range order structures in borosilicate glasses. Journal of Physics: Condensed Matter, 19 (41). ISSN 0953-8984

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Abstract

Boron-11 nuclear magnetic resonance (MAS NMR) and Raman spectroscopies have been used to study four families of glasses: xCs(2)O(100-x) ZMW(0 < x < 10), where ZMW represents the borosilicate glass MW to which oxides Z (Al2O3, La2O3 and MgO) are added such that, overall, 1.0 <= R (=[modifier]/[B2O3]) <= 2.5; K (=[SiO2]/[B2O3]) = 3.2. These glasses are related to the system used for the vitrification of high-level nuclear waste. The spectra reveal the presence of reedmergnerite and danburite medium-range order structural units in the glasses. The fraction of danburite units increases with the addition of caesium oxide when Al2O3 or La2O3 are present, and decreases when MgO is present.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Physics: Condensed Matter
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
Departments:
ID Code:
52939
Deposited By:
Deposited On:
29 Feb 2012 12:02
Refereed?:
Yes
Published?:
Published
Last Modified:
02 Jul 2020 00:46