Efek Pendoping Nd3+ Pada Senyawa BaBi2-xNdxNb2O9 Terhadap Struktur, Sifat Dielektrik Dan Optik

Authors

  • Zulhadjri Zulhadjri Departemen Kimia, FMIPA, Universitas Andalas, Padang-Sumatera Barat, Indonesia
  • Tommy Hermansyah Departemen Kimia, FMIPA, Universitas Andalas, Padang-Sumatera Barat, Indonesia
  • Upita Septiani Departemen Kimia, FMIPA, Universitas Andalas, Padang-Sumatera Barat, Indonesia

DOI:

https://doi.org/10.25077/jrk.v15i2.690

Keywords:

aurivillius, ferroelectric, molten salts, dielectric, electrocaloric

Abstract

The Aurivillius compound with formula BaBi2-xNdxNb2O9 (x = 0.05, 0.1, 0.2, and 0.4) has been successfully synthesized using the molten salt method, showing potential as a ferroelectric material. The impact of Nd3+ substitution on the structure, morphology, dielectric, and optical properties has been systematically analyzed. XRD data refinement confirms that BaBi2-xNdxNb2O9 (BBNN) exhibits an orthorhombic structure with an A21am space group. Anisotropic plate-like grains were observed across all samples, decreasing their size as Nd3+ content increases. The ferroelectric transition temperature (Tc) decreases due to structural distortion caused by the reduction of the lone pair 6s2 electron effect of Bi3+ when substituted with Nd3+. Moreover, this structural distortion also contributes to an increase in bandgap energy (Eg). The diffuse ferroelectric phase transition is characterized by a broadened Tc peak induced by Nd3+ substitution due to increased cationic disruption in the bismuth layers. The ferroelectric phase with a lower and broader Tc suggests that the x = 0.4 sample has the potential for electrocaloric applications.

Author Biography

Zulhadjri Zulhadjri, Departemen Kimia, FMIPA, Universitas Andalas, Padang-Sumatera Barat

Material science

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Published

2024-09-30

How to Cite

Zulhadjri, Z., Hermansyah, T. ., & Septiani, U. . (2024). Efek Pendoping Nd3+ Pada Senyawa BaBi2-xNdxNb2O9 Terhadap Struktur, Sifat Dielektrik Dan Optik. Jurnal Riset Kimia, 15(2), 37–46. https://doi.org/10.25077/jrk.v15i2.690

Issue

Vol. 15 No. 2 (2024): September

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