Crystallization and microstructural characterization of B2O3–Al2O3–SiO2 glass

Spectroscopic, Dielectric and Optical Properties of 60ZnO-30B2O3-10SiO2 Glass-Al2O3 Composites

“…4). The band near 570 cm −1 is due to the ZnO 4 or AlO 6 vibrations 27 . The weak band observed near 3450 cm −1 in all the spectra is due to the OH stretching vibrations.…”

“…The superposition of anti‐symmetric stretching vibrations of BO 4 group and Si–O–Si appears as a broad band in the region 900–1100 cm −1 . Hou et al 27 have assigned the bands at 1414 cm −1 in the FT‐IR spectra of B 2 O 3 –Al 2 O 3 –SiO 2 glass to the asymmetric stretching vibrations of B‐O‐B bonds. The peaks at 1230 and 1310–1340 cm −1 are due to the B‐O stretching vibrations of (BO) 3− units and the ν 3 mode of planar [BO 3 ] units, respectively 28 .…”

Near white light emission of Ce3+‐, Ho3+‐, and Sm3+‐doped oxyfluoride silicate glasses

“…For SFAC: 0.1C0.8H0.1S and SFAN: 0.1C0.8H0.1S, three absorption bands located at 1400‐810, 800‐620, and 540‐400 cm −1 are observed. The vibration types corresponding to the respective absorption bands of samples are depicted as the following . The absorption band in the range of 1400‐810 cm −1 is due to the asymmetric stretching vibrations of Si–O–Si bonds within [SiO 4 ] tetrahedral.…”

“…In the FT‐IR spectra of samples SFBC: 0.1C0.8H0.1S and SFABC: 0.1C0.8H0.1S, four absorptions located at 1600‐1220, 1200‐810, 800‐620, and 540‐400 cm −1 are observed. The assignments of the vibration types for the respective absorption bands of samples are described as the following . The absorption band from 1600 to 1220 cm −1 is attributed to the B–O asymmetric stretching vibrations of trigonal [BO 3 ] units.…”

Crystallization properties of magnesium aluminosilicate glass-ceramics with and without rare-earth oxides

“…The turbidity in glassceramics is well described by Rayleigh-Ganz particle scattering theory, where the most important factors for achieving high transparency are the crystal size and the refractive index difference between the crystal and matrix glass phases [2,3]. These two conditions are achieved in several aluminosilicate glass-ceramic systems, such as Li 2 O-Al 2 O 3 -SiO 2 , ZnO-Al 2 O 3 -SiO 2 , and B 2 O 3 -Al 2 O 3 -SiO 2 glass systems [4][5][6].…”