Lithium-fluoro borotellurite glasses: Nonlinear optical, mechanical characteristics and gamma radiation protection characteristics

Abstract

This study aimed to investigate a specific lithium-fluoro borotellurite glass system based on (60-x)B2O3-xTeO2-5LiF–5BaO–5Bi2O3 (x = 25, 35, 45, 55, 65, 75, and 85 mol %) composition encoded as BTLBB1- BTLBB7 in terms of their optical, mechanical characteristics, and gamma ray attenuation competencies. The Rmolar possess the values 22.064, 21.546, 21.038, 20.860, 19.998, 18.936, and 20.024 (cm3/mol), while the αmolar possess the values 8.755, 8.550, 8.348, 8.278, 7.936, 7.514, and 7.946 (cm3) for BTLBB1, BTLBB2, BTLBB3, BTLBB4, BTLBB5, BTLBB6, and BTLBB7, respectively. Values of χ(3) were 5.189 × 10−12, 5.150 × 10−12, 4.995 × 10−12, 4.448 × 10−12, 4.624 × 10−12, 4.995 × 10−12, and 5.812 × 10−12 (esu), while values of n2opticalwere 7.821 × 10−11, 7.768 × 10−11, 7.558 × 10−11, 6.813 × 10−11, 7.054 × 10−11, 7.558 × 10−11, and 8.656 × 10−11 for BTLBB1, BTLBB2, BTLBB3, BTLBB4, BTLBB5, BTLBB6, and BTLBB7, respectively. The highest μm values were found for BTLBB7 glass sample (TeO2 = 85 mol%) and obey the trend: (μm)BTLBB7 > (μm) BTLBB6 > (μm) BTLBB5 > (μm) BTLBB4 > (μm) BTLBB3 > (μm) BTLBB2 > (μm) BTLBB1. The T1/2 values were reported as 0.105 cm, 0.092 cm, 0.082 cm, 0.075, 0.067, 0.058 and 0.057 cm for those BTLBB1, BTLBB2, BTLBB3, BTLBB4, BTLBB5, BTLBB6 and BTLBB7 at 0.1 MeV photon energy, respectively. The BTLBB7 sample has the highest overall effective atomic numbers Zeff (55.04), while BTLBB1sample has the lowest values (50.33) at 0.1 MeV photon energy. The BTLBB1sample was reported the maximum EBF and EABF values, while the minimum values were reported for the BTLBB7 sample. The investigated glasses can be used as good candidate for optical fibers, photonic devices, and superior in terms of gamma-photon attenuation capability.