Infrared absorption spectra analysis of TeO<sub>2</sub>-ZnO-Bi<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> doped B<sub>2</sub>O<sub>3</sub> glasses
Devara Ega Fausta, Ahmad Marzuki, Cari Cari
Abstract
Abstract Boro-tellurite glasses with composition 60TeO 2 - (30-x)ZnO- 5Bi 2 O 3 - 5TiO 2 - xB 2 O 3 (where x = 0,2.5, and 5 mol%) have been successfully fabricated by melt quenching technique. FTIR characterization was carried out in range 400-4000 cm −1 using a KBr pellet method to study the glass chemical bond. The results show that several absorption peaks were recorded in range 400-4000 cm −1 . However, most of the absorption peaks were detected in the region 400-1600 cm −1 . It can be divided into 5 groups from 400-450 cm −1 , 620-650 cm −1 , 900-940 cm −1 , and 1100-1300 cm −1 . The main absorption peak of TZBT glass located at 620-650 cm −1 , which is the fingerprint of TeO 2 glass from Te-O vibration of TeO 4 units. The addition of B 2 O 3 components constructed a new absorption at 930 cm −1 and 1100-1300 cm −1 . The absorption at 930 cm −1 belongs to B-O vibrations of BO 4 units. While the absorption at 1100-1300 cm −1 relates to B-O vibrations of BO 3 units. For further investigation, the deconvolution process was performed to discover the effect of the addition of B 2 O 3 in the main absorption spectra. It was confirmed that six bands detected in the main absorption peak. The effect of B 2 O 3 reduces the absorption band and shift the wavenumbers in TZBT glass.