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<p>This study investigates the synthesis and structural, microstructural, electrical, and dielectric properties of the multiferroic compound La<sub>0.6</sub>Ba<sub>0.1</sub>Ce<sub>0.3</sub>Fe<sub>0.95</sub>Ni<sub>0.05</sub>O<sub>3</sub> (LaBaCeFeNiO<sub>3</sub>), synthesized via the sol–gel method. X-ray diffraction analysis confirms the formation of an orthorhombic structure (Pnma space group) with secondary phases CeO<sub>2</sub> and Fe<sub>2</sub>NiO<sub>4</sub>. Scanning electron microscopy reveals a homogeneous microstructure with an average grain size of 0.447&#xa0;µm. Electrical conductivity studies highlight conduction mechanisms governed by the NSPT and CBH models across different temperature ranges. Dielectric measurements demonstrate a high permittivity at low frequencies due to interfacial polarization and a thermally activated relaxation phenomenon. Impedance spectroscopy, modeled using equivalent circuit analysis, reveals that grain boundaries predominantly govern the conduction process. These findings underline the potential of LaBaCeFeNiO<sub>3</sub> for advanced electronic applications, including high-frequency devices and gas sensors.</p>

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Structural and High Dielectric Properties of La0.6Ba0.1Ce0.3Fe0.95Ni0.05O3 Multiferroic Perovskite for Electronic Applications

  • 期刊论文

  • 发表日期：

    2025年1月16日

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  • M. Seif Eddine,
  • M. Horchani,
  • Houcine Dhahri,
  • Aref Omri,
  • A. Benali,
  • M. Taoufik,
  • B. M. G. Melo,
  • Hazem F. Sakeek,
  • E. Dhahri,
  • M. P. F. Graça,
  • B. F. O. Costa,
  • Rached Ben Younes

摘要

This study investigates the synthesis and structural, microstructural, electrical, and dielectric properties of the multiferroic compound La0.6Ba0.1Ce0.3Fe0.95Ni0.05O3 (LaBaCeFeNiO3), synthesized via the sol–gel method. X-ray diffraction analysis confirms the formation of an orthorhombic structure (Pnma space group) with secondary phases CeO2 and Fe2NiO4. Scanning electron microscopy reveals a homogeneous microstructure with an average grain size of 0.447 µm. Electrical conductivity studies highlight conduction mechanisms governed by the NSPT and CBH models across different temperature ranges. Dielectric measurements demonstrate a high permittivity at low frequencies due to interfacial polarization and a thermally activated relaxation phenomenon. Impedance spectroscopy, modeled using equivalent circuit analysis, reveals that grain boundaries predominantly govern the conduction process. These findings underline the potential of LaBaCeFeNiO3 for advanced electronic applications, including high-frequency devices and gas sensors.