Spectroscopy and structural state of V4+ ions in lithium aluminosilicate glass and glass–ceramics

Structure and Characterization of Some High Chemically Resistance Silicate Glasses

“…Thus it is possible to determine any changes in the Si-O-Si vibrational modes and elicit useful information about the molecular structure of the glass. This technique is also sensitive to vibrations associated with non-bridging oxygen so it is useful when studying the glass structure following the glass network connectivity model [22]. Figure 2 shows the FTIR transmittance spectra of the prepared glass samples.…”

Effects of Y2O3 addition on structure and properties of LZAS vitrified bond for CBN grinding tools application

“…Existence of wide band at high frequency 1013 cm À 1 illustrates asymmetric stretching vibrations of the Si-O-Si bonds with threedimensional network structure [25,26]. In view of alumina, it is preferably located in the tetrahedral network and acts as a network former as silicon in the glass, so the asymmetric vibrations of Si-O-Al take part in this band [20].…”

“…The IR spectra are capable of investigating the variation of glass structure with composition changed and can provide information about molecular vibration or rotation associated with a covalent bond [20]. As shown in Fig.…”

Optical band gap and spectroscopic study of lithium alumino silicate glass containing Y3+ ions

“…Similarities between yttrium and lanthanides in solubility and atomic radius will conclude the mentioned discussion. Transition metal yttrium regarded as lanthanides made the authors curious of its spectroscopic and optical influences while doping it into a relatively suitable host [10][11][12][13].…”