IR and Raman investigation on the structure of (100-x)[0.33B2O3–0.67ZnO]–xV2O5 glasses

Elastic properties and structural studies on some zinc-borate glasses derived from ultrasonic, FT-IR and X-ray techniques

“…when used as modifiers, the cations can produce serious structural effects due to their higher valence than alkali cations. There are important reports in literature [4][5][6][7] which suggest that, Zn 2+ , Mg 2+ , Pb 2+ , etc., occupy both forming and modifying positions. However, the pressure dependence studies of Na + ion conductivity on Na 2 O-ZnO-B 2 O 3 glass have also indicated that Zn 2+ ions prefer * Corresponding author.…”

Structural properties of Li–borate glasses doped with Sm3+ and Eu3+ ions

“…In particular, the spin centers in borate glasses exhibit electron spin echo envelope modulation (ESEEM) due to dipole-dipole interaction of the electron spin with nuclear magnetic moments of 11 B and 10 B and alkali nuclei (such as 7 Li and 23 Na) [15]. Glass structure is a basic issue to better understanding the behavior of the materials .The structure of oxide glasses can be expressed by the kind and type of oxygen coordination polyhedra in the structure and the way they interconnect to each other to form the glass network [1,16]. Influence of glass-modifier additions such as Al 2 O 3 , halide or sulphate ions, as well as irradiation effects on structural changes related to N 4 = BO 4 /BO 3 extensively studied [17,18].…”

White emitting phosphors based on glasses of the type 10AlF3–10TiO2–39PbO–30H3BO3–10SiO2–xEu2O3–(1−x)Tb2O3: An energy transfer study

“…3 with its bands points at presence of some bonds and structural units in the un-doped AFTPBS glass. Among the units is tetrahedral [SiØ 4 ] unit that bending vibrations gives rise to the band at 437 cm À 1 (Ø is bridging oxygen and O À -non-bridging oxygen) [12] and B-Ø-B stretching vibrations in [BØ 4 ] units [13]. Besides this band could be assigned to vibrations of Pb-O bonds [14][15][16].…”

“…Besides this band could be assigned to vibrations of Pb-O bonds [14][15][16]. The shoulder at 1641 cm À 1 reflects B-O À stretching in chain and ring metaborate units [13]. The next shoulder in the 2000-1500 range appeared in the case of presence SiO 2 in the glass composition and the absorption effect should be related to Si-O bond.…”