Effect of copper addition on density and magnetic susceptibility of lithium borate glasses

Effect of copper oxide on structure and physical properties of lithium lead borate glasses

“…The band at 700 cm -1 results from oxygen bridges forming between one tetrahedral and one trigonal boron atom [2]. Moreover, the band at 620 cm -1 is the characteristic of the vibration frequency of lead [16].…”

“…and cupric (Cu 2? ), in glass samples [2]. In our study, lithium borate glass containing lead was studied.…”

Gadolinium-environment in borate–tellurate glass ceramics studied by FTIR and EPR spectroscopy

“…It is known that in the vitreous B 2 O 3 about 80% of the boron atoms are present in the boroxol rings, B 3 O 6 , that are interconnected by independent [BO 3 ] groups [14]. Thus, vibrational modes of the vitreous borate network are mainly active in three infrared spectral regions.…”

“…The second region ranges between 800 and 1200 cm À1 and its spectral features are due to the B-O bond stretching of [BO 4 ] tetrahedral units. In the third region ranging from 400 to 800 cm À1 there is an important band located around 720 cm À1 assigned to the bending vibrations of various borate segments [14][15][16].…”

IR, density and DTA studies the effect of replacing Pb3O4 by CuO in pseudo-binary Li2B4O7–Pb3O4 glass system

“…Binary diborate glasses with CuO have been investigated [13]. On the basis of the infrared data, it is proposed that the glass structure corresponds to a network formed by four tightly connected diborate units.…”