Silicate glass spectroscopy

Raman spectroscopy is particularly useful for investigating the structure of noncrystalline solids. The vibrational spectra of noncrystalline solids exhibit broad bands centered at wavenumbers corresponding to the vibrational modes of the corresponding crystals (Figure 5). In silicate glasses shifts in the high-wavenumber bands... 

Behrens, H. and Stuke, A. (2003). Quantification of H20 contents in silicate glasses using IR spectroscopy - a calibration based on hydrous glasses analysed by Karl-Fischer titration. Glass Science and Technology 76 176-189. 

Figure 9,9 Amounts of molecular H2O and OH hydroxyls determined in hydrated silicate glasses by IR spectroscopy. Reprinted from E. Stolper, Geochimica et Cosmochimica Acta, 46, 2609-2620, copyright 1982, with kind permission from Elsevier Science Ltd., The Boulevard, Langford Lane, Kidlington 0X5 1GB, UK.

K. Shimoda, Y. Tobu, M. Hatakeyama, T. Nemoto and K. Saito, Structural investigation of Mg local environments in silicate glasses by ultra-high field Mg 3QMAS NMR spectroscopy. Am. Mineral, 2007, 92, 695-698. 

McMillan, P. F. (1984a). Structural studies of silicate glasses and melts—applications and limitations of Raman spectroscopy. Amer. Mineral. 69, 622-44. 

There are a number of papers which report the use of Si NMR in studies of the structures of various soluble silicates and alkali silicate glasses. (93, 97-103) Early workers concluded that in soluble sodium metasilicate solutions only simple monomeric silicate structures are present. (104) The presence of polymeric structures was subsequently identified using Raman spectroscopy (105-107) and trimethylsilylation experiments. (108) Marsmann (97) first reported the existence of dimer, linear trimer, tricyclic, and polymeric structures based on Si NMR... 

PbS nanoparticles with features of quantum dots (QDs) have been fabricated in boron-silicate glass matrix. Their mean diameter was found to be in the range of 3.4-8.2 nm from the optical spectroscopy data due to their explicit quantum confinement effect. The particle size and position of the absorption bands can be controlled through the regimes of thermal treatment of the glasses. SAXS technique showed near to monodispetse size-distribution of QDs and possible ordering within the glass matrix. 

The time-resolved spectroscopy of Cr doped spinel and petalite-like phase types glass-ceramics enables a more accurate distinction of the and T2 energy levels of Cr(III) and of the equilibrium between the population of two levels, see Fig. 5, which presents the time-resolved spectra of spinel type glass-ceramics excited at 680 nm at room temperature Glass-ceramics derived from boro-silicate glasses containing Cr(III) were also recently studied by laser spectroscopy and fluorescence-line narrowing. 

CdSe Tei-x nanoparticles were fabricated within the silicate glass matrix and studied with TEM and optical spectroscopy both for as-prepared and heat-treated samples at temperatures lower than the glass softening. Appearance of spectral features in CdTe- and other Te-containing nanoparticles is explained as the phase transformation between wurtzite and sphalerite lattices in the CdSe-CdTe system. 

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