Materials (Sep 2024)

Impedance Spectroscopy of Sm-Doped of BaBi<sub>2</sub>Nb<sub>2</sub>O<sub>9</sub> Aurivillius Ceramics

  • Jolanta Makowska,
  • Michał Rerak,
  • Beata Wodecka-Duś,
  • Tomasz Goryczka,
  • Grzegorz Tytko,
  • Anna Zawada,
  • Małgorzata Adamczyk-Habrajska

DOI
https://doi.org/10.3390/ma17174360
Journal volume & issue
Vol. 17, no. 17
p. 4360

Abstract

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This investigation focuses on the impact of Sm3+ dopants on BaBi2Nb2O9 (BBN) ceramics. These ceramics were obtained using the traditional solid state reaction approach. Techniques like scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were employed to explore the structure and morphology of the ceramics. The results showed that the chemical composition of the ceramic samples matched well with the initial ceramic powder stoichiometry. Increasing the amount of samarium resulted in a slight reduction in the average ceramic grain size. The ceramics exhibited a tetragonal structure categorized under the space group I4/mmm. The electrical properties were analyzed using complex impedance spectroscopy (SI) across various temperatures and frequencies, revealing that both grains and intergranular boundaries are significant in the material’s conductivity.

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