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<p>Electromagnetic interference (EMI) poses significant challenges to the reliable performance of modern electronic systems, necessitating the development of efficient shielding and absorbing materials. In this study, perovskite-based titanium-doped barium ferrite BaFe<sub>(12−<i>x</i>)</sub>Ti<sub><i>x</i></sub>O<sub>19</sub> (<i>x</i> = 0.35) nanomaterials were synthesized via the sol–gel method and sintered at 850&#xa0;°C, 900&#xa0;°C, and 950&#xa0;°C. Studies on AC conductivity and dielectric properties of prepared samples at ambient temperature and 180&#xa0;°C are being reported in this work. Enhanced AC conductivity and dielectric response at higher sintering temperatures were attributed to improved crystallinity and charge-transfer interactions within the material. Dielectric investigations are governed by space-charge relaxation, charge carrier hopping, and electronic polarization. The findings highlight the potential of Ti-doped barium ferrites as promising candidates for EMI shielding applications, offering tunable dielectric properties and improved frequency response suitable for next-generation optoelectronic and microwave devices.</p>

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Influence of Ti substitution and sintering temperature on the dielectric and AC conductive properties of BaFe12O19 nanoferrites

  • 期刊论文

  • 发表日期：

    2025年9月8日

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  • A. R. Aparna,
  • Y. S. Rammohan,
  • P. V. Shamanth,
  • M. Anantha Sunil

摘要

Electromagnetic interference (EMI) poses significant challenges to the reliable performance of modern electronic systems, necessitating the development of efficient shielding and absorbing materials. In this study, perovskite-based titanium-doped barium ferrite BaFe(12−x)TixO19 (x = 0.35) nanomaterials were synthesized via the sol–gel method and sintered at 850 °C, 900 °C, and 950 °C. Studies on AC conductivity and dielectric properties of prepared samples at ambient temperature and 180 °C are being reported in this work. Enhanced AC conductivity and dielectric response at higher sintering temperatures were attributed to improved crystallinity and charge-transfer interactions within the material. Dielectric investigations are governed by space-charge relaxation, charge carrier hopping, and electronic polarization. The findings highlight the potential of Ti-doped barium ferrites as promising candidates for EMI shielding applications, offering tunable dielectric properties and improved frequency response suitable for next-generation optoelectronic and microwave devices.