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<p>The traditional melt quenching process is used to make oxide glass nano-composites with the empirical formula 0.2 AgI − 0.8 {0.1 CdO - x V<sub>2</sub>O<sub>5</sub> - y P<sub>2</sub>O<sub>5</sub> − 0.2 ZnO} for various values of x and y. The X-ray diffraction approach has confirmed the adaptation of amorphous structure of the composite as the ratio of mixed formers elevates. AC conduction mechanisms of these glasses was explored in the frequency range of 42Hz to 5MHz and in the temperature range of 300–753K using impedance spectroscopy and Almond-West formalism. The DC conductivity of these glassy systems was found to obey the Arrhenius law. Jonscher’s Universal power law has been used to analyse the frequency dependent AC conductivity. The conduction mechanism of the samples have been found to be supported by the NSPT (modified) model for the sample with lowest ratio of the mixed formers and the CBH (modified) model for the rest of the samples. The study of dielectric relaxation and electrical modulus formalism was carried out on all the samples to validate the data received from electrical conductivity studies. Both the studies confirmed the fact that mixed glass formers can have a positive impact on the electrical conductivity of materials, particularly in glassy system.</p>

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Design and study of AgI-Basesd glassy nanocomposites: nature of electrical transport phenomena

  • 期刊论文

  • 发表日期：

    2025年8月21日

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  • Asmita Poddar,
  • Swarupa Ojha,
  • Madhab Roy,
  • Sanjib Bhattacharya

摘要

The traditional melt quenching process is used to make oxide glass nano-composites with the empirical formula 0.2 AgI − 0.8 {0.1 CdO - x V2O5 - y P2O5 − 0.2 ZnO} for various values of x and y. The X-ray diffraction approach has confirmed the adaptation of amorphous structure of the composite as the ratio of mixed formers elevates. AC conduction mechanisms of these glasses was explored in the frequency range of 42Hz to 5MHz and in the temperature range of 300–753K using impedance spectroscopy and Almond-West formalism. The DC conductivity of these glassy systems was found to obey the Arrhenius law. Jonscher’s Universal power law has been used to analyse the frequency dependent AC conductivity. The conduction mechanism of the samples have been found to be supported by the NSPT (modified) model for the sample with lowest ratio of the mixed formers and the CBH (modified) model for the rest of the samples. The study of dielectric relaxation and electrical modulus formalism was carried out on all the samples to validate the data received from electrical conductivity studies. Both the studies confirmed the fact that mixed glass formers can have a positive impact on the electrical conductivity of materials, particularly in glassy system.