Scholarlink

<p>Barium bismuth borate sodium (BBBNDy) glasses doped with Dy<sub>2</sub>O<sub>3</sub> (0–0.8&#xa0;mol%, x = 0.2&#xa0;mol%) were prepared via the melt quenching approach and examined under gamma irradiation. XRD confirmed the amorphous nature, while density measurements (4.3387–4.4743&#xa0;g/cm<sup>3</sup>) revealed composition and irradiation-dependent variations. FTIR and Raman studies indicated Dy<sub>2</sub>O<sub>3</sub>-induced network modification through BO<sub>3</sub>/BO<sub>4</sub> and BiO<sub>3</sub>/BiO<sub>6</sub> units, with minimal structural degradation under irradiation. Optical studies revealed tunable band gaps and low Urbach energies (0.1752–0.2266&#xa0;eV) reflecting good structural order. Photoluminescence spectra exhibited a strong yellow emission at 575&#xa0;nm (<sup>4</sup>F<sub>9/2</sub> → <sup>6</sup>H<sub>13/2</sub>), with optimal intensity for BBBNDy3 glass. Gamma irradiation induced PL quenching at 575&#xa0;nm, with intensity reduced by to 66.6% at 5&#xa0;kGy and 87.2% at 15&#xa0;kGy; still, Dy<sup>3+</sup> emission remains detectable. These results highlight the dual role of Dy<sup>3+</sup> ions as structural stabilisers and efficient luminescent activators, identifying BBBNDy3 glasses as a strong candidate for photonic devices operating in radiation environments.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of gamma irradiation on physical, structural, and optical properties of Dy3+ doped barium bismuth borate sodium glasses

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年12月6日

查看全文
  • S Meher Taj,
  • M. R. Ambika,
  • C. Devaraja,
  • Sudha D. Kamath,
  • K. R. Vighnesh,
  • A. S. Bennal,
  • Utpal Deka

摘要

Barium bismuth borate sodium (BBBNDy) glasses doped with Dy2O3 (0–0.8 mol%, x = 0.2 mol%) were prepared via the melt quenching approach and examined under gamma irradiation. XRD confirmed the amorphous nature, while density measurements (4.3387–4.4743 g/cm3) revealed composition and irradiation-dependent variations. FTIR and Raman studies indicated Dy2O3-induced network modification through BO3/BO4 and BiO3/BiO6 units, with minimal structural degradation under irradiation. Optical studies revealed tunable band gaps and low Urbach energies (0.1752–0.2266 eV) reflecting good structural order. Photoluminescence spectra exhibited a strong yellow emission at 575 nm (4F9/2 → 6H13/2), with optimal intensity for BBBNDy3 glass. Gamma irradiation induced PL quenching at 575 nm, with intensity reduced by to 66.6% at 5 kGy and 87.2% at 15 kGy; still, Dy3+ emission remains detectable. These results highlight the dual role of Dy3+ ions as structural stabilisers and efficient luminescent activators, identifying BBBNDy3 glasses as a strong candidate for photonic devices operating in radiation environments.