Spectroscopic studies of lithium phosphate, lead phosphate and zinc phosphate glasses containing TiO2: Effect of gamma irradiation

Effects of TiO2 and P2O5 on solarization and crystallization of photosensitive lithium silicate glass

“…In this condition, titanium ions might impede the generation of induced visible peaks during the irradiation process. Many researches reveal that some glasses containing few metallic ions such as titanium, vanadium, and copper are able to shield UV light after gamma irradiation [11,23,24]. Fig.…”

“…Optical absorption studies on TiO 2 containing glasses indicate that under ordinary conditions of melting, titanium ions are incorporated into silicate glasses in its higher valence state as Ti 4+ ions because it is difficult to obtain Ti 3+ ions under such conditions. Indeed, alkali silicate and alkali borate glasses melted under normal atmospheric condition favor the colorless high tetravalent titanium ions while alkali phosphate and lead phosphate glasses advocate the presence of the purple trivalent titanium ions [5,11,23,27].…”

Optical properties of 3d transition metal ion-doped sodium borosilicate glass

“…The first member of the 3d-TM ions, titanium, has been attracting increasing interest in its optical properties [16][17][18] because the addition of titanium dioxide can increase the refractive index, density, transformation temperature and chemical durability of the glass, thereby extending its applications. Ti 4+ ions have demonstrated five-fold coordination in a TiO 2 -NaO 2 -SiO 2 glass and six-coordinate coordination when the TiO 2 content was larger than 10 mol% [19].…”

“…On the other hand, Ti 3+ environments in silicate glasses have been attributed to one six-coordinated Ti 3+ and two five-coordinated Ti 3+ ions (square pyramid and trigonal bi-pyramid, respectively) after reduction of Ti 4+ ions under beta irradiation [21]. Furthermore, Ghoneim et al recently demonstrated that distorted octahedral Ti 3+ ions give two visible absorption bands at about 550-580 nm and 680-740 nm due to the respective transitions 2 B 2g → 2 B 1g and 2 B 2g → 2 A 1g in TiO2-containing lithium phosphate, lead phosphate and zinc phosphate glasses [18].…”

Influence of Fe 2 O 3 on non-isothermal crystallization kinetics and microstructure of lithium titanium phosphate glass-ceramics

“…These specifications make them suitable for many applications such as photonics, fast ion conductors [1][2][3][4], glass to metal seals [5][6][7], low temperature enamels [7], NH 3 gas adsorption [8], and biomedical engineering [9]. Recently, lithium phosphate glass-ceramic electrolytes have been widely studied due to various technological advantages such as great varieties of composition, absence of grain boundaries, ease of thin film fabrication, elimination of porosity, molding in desired shapes and long range disorder leading to high ionic conductivity [1,[10][11][12][13].…”