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<p>The Zinc Bismuth Vanadate glass system modified with Na<sub>2</sub>O having compositional formula xNa<sub>2</sub>O.35ZnO.15Bi<sub>2</sub>O<sub>3</sub>.(50-x)V<sub>2</sub>O<sub>5</sub>, where x = 0, 5, 10, 15, and 20 (in mol%) were successfully fabricated using the conventional melt-quench technique. XRD patterns confirmed the amorphous nature of the synthesized glass system. The variation in glass density, crystalline volume, molar volume, oxygen packing density, bond density, bond ionicity, polaron radius, electronegativity difference, sodium interionic distance and field strength parameters was investigated with increasing Na<sub>2</sub>O content for the glass composition. The structure of the glasses was examined using Infrared and Raman spectroscopy, which revealed the presence of vibrations associated with VO<sub>5</sub> pyramids and VO<sub>4</sub> tetrahedral structural units. Additionally, pyramidal BiO<sub>3</sub> units and octahedral BiO<sub>6</sub> structural units were identified in modified glass system. For study of optical properties, UV–Vis spectroscopy was employed, revealing an increasing trend in the optical energy band gap with increasing Na<sub>2</sub>O content. Properties such as the dielectric constant (8.601–6.646), refractive index (2.933–2.578), molar polarizability ((1.275–1.127) × 10<sup>−23</sup> Å<sup>3</sup>) have been seen to decrease whereas metallization criterion of the glass was found to vary from 0.283 to 0.347 with increasing Na<sub>2</sub>O content. In the present glass system, nonlinear optical glass will be available when x = 15 and 20. TPA values of the prepared glass system also decreased from 23.800 to 17.239 (cm/GW) with increased Na<sub>2</sub>O content in the glass system.</p>

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Impact of Na2O modification on the physical, structural, and optical properties of zinc bismuth vanadate glasses

  • 期刊论文

  • 发表日期：

    2025年9月7日

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  • Ankita Malik,
  • Rinki Dahiya,
  • Jyoti Ahlawat,
  • Deepika Nain,
  • Preeti Redhu,
  • S. K. Jha

摘要

The Zinc Bismuth Vanadate glass system modified with Na2O having compositional formula xNa2O.35ZnO.15Bi2O3.(50-x)V2O5, where x = 0, 5, 10, 15, and 20 (in mol%) were successfully fabricated using the conventional melt-quench technique. XRD patterns confirmed the amorphous nature of the synthesized glass system. The variation in glass density, crystalline volume, molar volume, oxygen packing density, bond density, bond ionicity, polaron radius, electronegativity difference, sodium interionic distance and field strength parameters was investigated with increasing Na2O content for the glass composition. The structure of the glasses was examined using Infrared and Raman spectroscopy, which revealed the presence of vibrations associated with VO5 pyramids and VO4 tetrahedral structural units. Additionally, pyramidal BiO3 units and octahedral BiO6 structural units were identified in modified glass system. For study of optical properties, UV–Vis spectroscopy was employed, revealing an increasing trend in the optical energy band gap with increasing Na2O content. Properties such as the dielectric constant (8.601–6.646), refractive index (2.933–2.578), molar polarizability ((1.275–1.127) × 10−23 Å3) have been seen to decrease whereas metallization criterion of the glass was found to vary from 0.283 to 0.347 with increasing Na2O content. In the present glass system, nonlinear optical glass will be available when x = 15 and 20. TPA values of the prepared glass system also decreased from 23.800 to 17.239 (cm/GW) with increased Na2O content in the glass system.