A multispectroscopic structural study of lead silicate glasses over an extended range of compositions

作者：Feller S^*; Lodden G; Riley A; Edwards T; Croskrey J; Schue A; Liss D; Stentz D; Blair S; Kelley M; Smith G; Singleton S; Affatigato M; Holland D; Smith M E; Kamitsos E I; Varsamis C P E; Ioannou E

来源：Journal of Non-Crystalline Solids, 2010, 356(6-8): 304-313.

DOI：10.1016/j.jnoncrysol.2009.12.003

• Diffraction and scattering measurements
• Raman scattering
• Glass formation
• Glass transition
• Glasses
• Nuclear magnetic (and quadrupole) resonance
• Mass spectroscopy
• Modeling and simulation
• Optical properties
• FTIR measurements
• Oxide glasses
• Silicates
• Resonance methods
• NMR, MAS NMR and NQR
• Structure
• Short-range order
• Thermal properties
• Glass transition

A series of lead silicate glasses, spanning the broadest reported range of lead contents (up to 83 mol% PbO), were prepared, on which the following spectroscopic observations were made: (29)Si magic angle spinning nuclear magnetic resonance, time of flight mass spectroscopy, raman spectroscopy and fourier transform infrared spectroscopy. For bulk. splat-quenched samples, infrared results indicate that the lever rule is approximately followed until about 60 mol% PbO, though with considerable dissociation of the stoichiometric groups into silicate units with lesser and greater numbers of non-bridging oxygens. For roller-quenched samples, nuclear magnetic resonance data are consistent with a statistical distribution up to this lead concentration. Above 60 mol% PbO, added oxygen remains associated with lead to form a separate lead oxide glass network. The evidence for this comes from each of the spectroscopic techniques employed. A quantitative distribution of PbO is given.

• 出版日期2010-3-1