Effect of B2O3 content on the structural and optical properties of (Ba0.85Ca0.15) (Ti0.9Zr0.1)O3 glass.

This study explores the structural and optical properties of (Ba 0.85 Ca 0.15) (Ti 0.9 Zr 0.1)O 3 system mixed with B 2 O 3. The samples with the composition xB 2 O 3 + (100-x) (Ba 0.85 Ca 0.15) (Ti 0.9 Zr 0.1)O 3 (where x = 5, 10, 20, 30 and 40 mol. %) were prepared using the melting quenching technique to form borate-based glass containing BaO, CaO, ZrO 2 and TiO 2 (BBCZT). X-ray diffraction analysis confirmed the amorphous nature of the prepared samples. The macroscopic structure of the glasses was assessed from the density measurements determined through Archimedes' principle, while information regarding the atomic structural units and vibrational modes were obtained from Infrared measurements. Increasing the B 2 O 3 content led to variation of the relative intensity of these modes together with a decrease (increase) in density (molar volume), indicating a less dense and open-structure for the glass network. The absorption spectra showed absorption bands associated with the optical transitions B 2 2 g → B 2 1 g and B 2 2 g → A 2 1 g of Ti 3 + ions occupying distortion octahedral sites (Ti Oh 3 +) in the glass matrix. The ligand field strength (10Dq), optical energy gap (E o p t ), Urbach's energy (ΔE), and nonlinear optical properties (NLO) were calculated in the study. • Explore the structural and optical properties of (Ba 0.85 Ca 0.15) (Ti 0.9 Zr 0.1)O 3 (BCZT) when utilized as a glass material. • Preparation a glass sample composed of 95 % (Ba 0.85 Ca 0.15) (Ti 0.9 Zr 0.1)O 3 and utilizing only 5 % of B 2 O 3 glass-former. • The prepared glass samples exhibit anomalous behavior of N 4 value with respect to the ratio of alkali oxides. • The ligand field strength (10Dq), and linear/non-linear optical properties were calculated. [ABSTRACT FROM AUTHOR]