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<p>A tellurite-based glass with the composition 60Te₂O₃–10B₂O₃–5ZnO–10Li₂CO₃–5MgO–9Ta₂O₅–1Tm₂O₃ (TeZnLiTaB: Tm<sup>3</sup>⁺) was successfully synthesized to investigate its multifunctional characteristics. X-ray diffraction analysis verified the amorphous nature of the prepared glass. Fourier-transform infrared spectra revealed characteristic vibrational modes associated with Te–O, B–O, Zn–O, and Tm–O bonds, confirming the formation of a structurally stable glass network. UV–visible absorption measurements indicated a direct optical bandgap of approximately 2.8&#xa0;eV, while photoluminescence studies showed strong Tm<sup>3</sup>⁺ emission bands centered at 650&#xa0;nm and 792&#xa0;nm, demonstrating suitability for photonic applications. Magnetic measurements using vibrating sample magnetometry showed soft magnetic behavior, with a saturation magnetization of 0.01285 emu g⁻<sup>1</sup> and a coercivity of 80.9 Oe. Dielectric investigations revealed a dielectric constant of about 26.5 at 1&#xa0;kHz and low dielectric loss at room temperature, along with Jonscher-type frequency-dependent conductivity. Electrochemical studies through cyclic voltammetry indicated solution resistance (Rₛ) and charge-transfer resistance (Rct) values of 14.09&#xa0;Ω and 55.92&#xa0;Ω, respectively. The combined optical, magnetic, dielectric, and electrochemical properties suggest that the TeZnLiTaB: Tm<sup>3</sup>⁺ glass is a promising material for multifunctional photonic, energy-related, and quantum electronic device applications.</p>

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Exploring the structural, electrical, and electrochemical properties of Tm3⁺-doped tellurite lithium borate glass for supercapacitor applications

  • 期刊论文

  • 发表日期：

    2026年4月16日

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  • P. Vinothkumar,
  • T. Sivakumar,
  • G. Sivasakthi,
  • V. Raj

摘要

A tellurite-based glass with the composition 60Te₂O₃–10B₂O₃–5ZnO–10Li₂CO₃–5MgO–9Ta₂O₅–1Tm₂O₃ (TeZnLiTaB: Tm3⁺) was successfully synthesized to investigate its multifunctional characteristics. X-ray diffraction analysis verified the amorphous nature of the prepared glass. Fourier-transform infrared spectra revealed characteristic vibrational modes associated with Te–O, B–O, Zn–O, and Tm–O bonds, confirming the formation of a structurally stable glass network. UV–visible absorption measurements indicated a direct optical bandgap of approximately 2.8 eV, while photoluminescence studies showed strong Tm3⁺ emission bands centered at 650 nm and 792 nm, demonstrating suitability for photonic applications. Magnetic measurements using vibrating sample magnetometry showed soft magnetic behavior, with a saturation magnetization of 0.01285 emu g⁻1 and a coercivity of 80.9 Oe. Dielectric investigations revealed a dielectric constant of about 26.5 at 1 kHz and low dielectric loss at room temperature, along with Jonscher-type frequency-dependent conductivity. Electrochemical studies through cyclic voltammetry indicated solution resistance (Rₛ) and charge-transfer resistance (Rct) values of 14.09 Ω and 55.92 Ω, respectively. The combined optical, magnetic, dielectric, and electrochemical properties suggest that the TeZnLiTaB: Tm3⁺ glass is a promising material for multifunctional photonic, energy-related, and quantum electronic device applications.