Abstract

Glasses with compositions 20BaO · 10Bi₂O₃ · (70 – x)B₂O₃ · xV₂O₅ with x = 0, 0.2, 0.4, 0.6, 0.8 and 1 mol % were prepared by melt quenching technique. The amorphous nature was established by X-ray diffraction studies. Fourier transform infrared studies carried out for samples and it exhibit absorption bands for oxides in various structural units. Physical parameters viz., density, molar volume, molar refraction, dielectric constant, electro negativity, polaron radius and oxygen packing density were calculated. Theoretical optical basicity was estimated and is increasing with vanadium content shows increasing polarizability of samples. Metallization criterion decreases shows the metallic nature of samples, this implies that prepared glass samples can be used as amorphous semiconductors and could be used in electronics and memory switching devices. Using UV-vis spectra optical band gap energy (E_opt) calculated and is decreased from 2.998–2.453 eV, linear refractive index is measured from E_opt. Increase in Urbach energy (E_u) with vanadium component is observed.

中文翻译：

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含氧化钒的硼酸铋玻璃的物理和光学性质

摘要

与组合物20BaO眼镜·10Bi ₂ ö ₃ ·（70 - X）乙₂ ö ₃ · X V ₂ ø ₅与X通过熔融淬火技术制备＝ 0、0.2、0.4、0.6、0.8和1mol％。通过X射线衍射研究确定了无定形性质。对样品进行了傅里叶变换红外研究，它显示了各种结构单元中氧化物的吸收带。计算了物理参数，即密度，摩尔体积，摩尔折射，介电常数，电负性，极化子半径和氧堆积密度。估计了理论光学碱度，并随钒含量的增加而增加，表明样品的极化率增加。金属化标准的降低表明样品的金属性质，这意味着制备的玻璃样品可以用作非晶半导体，并且可以用于电子产品和存储开关设备。使用紫外可见光谱的光学带隙能量（计算出的E _opt）从2.998–2.453 eV减小，然后从E _opt测量线性折射率。观察到钒元素使Urbach能量（E _u）增加。