TY - JOUR

T1 - The effect of oxide additions on medium-range order structures in borosilicate glasses

AU - Parkinson, B. G.

AU - Holland, D.

AU - Smith, Mark E.

AU - Howes, A. P.

AU - Scales, C. R.

PY - 2007/10/1

Y1 - 2007/10/1

N2 - 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.

AB - 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.

U2 - 10.1088/0953-8984/19/41/415114

DO - 10.1088/0953-8984/19/41/415114

M3 - Journal article

VL - 19

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

IS - 41

M1 - 415114

ER -