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<p>Barium-based M-type hexaferrite ceramics have earned significant attention in modern technological as well as commercial applications including transformer cores, magnetic recording system, mining&#xa0;wastewater treatment, and mineral processing&#xa0;because of their chemical stability and tunable magnetic characteristics. Therefore, a series of Ba<sub>1−<i>x</i></sub>Ni<sub><i>x</i></sub>Nd<sub>0.2</sub>La<sub>0.3</sub>Fe<sub>11.5</sub>O<sub>19</sub> with <i>x</i> = 0, 0.01, 0.02, and 0.03 phase fractions is designed and synthesized by a conventional sol–gel auto-ignition approach. The magnetoplumbite hexagonal matrix belonging to the P63/mmc centrosymmetric space group is affirmed by X-ray diffraction (XRD) structural analysis. Bending and stretching vibrational modes of Fe and O at various wavenumbers are evident in the Fourier transform infrared spectroscopy technique, while the formation of different bands is also manifested by Raman spectra that further support the formation of M-type hexaferrites (HFs). A negative trend in magnetic parameters is perceived with an increase in Ni<sup>2+</sup> content. Moreover, the obtained magnetic characteristics indicate the potential applicability of the synthesized hexaferrites in magnetic separation and mining wastewater remediation systems.&#xa0;Based on current findings, the <i>x</i> = 0.01 composition is optimal in designing high-density magnetic recording media, transformer cores, and hard magnets.</p>

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Structural and magnetic response of Ni2+-doped Ba1−xNixNd0.2La0.3Fe11.5O19 ferrite prepared via the self-combustion route

  • 期刊论文

  • 发表日期：

    2026年5月15日

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  • Qamar Hussain,
  • Feras Korkees,
  • Hamdy Khamees Thabet,
  • A. U. Rahman,
  • Zeinhom M. El-Bahy

摘要

Barium-based M-type hexaferrite ceramics have earned significant attention in modern technological as well as commercial applications including transformer cores, magnetic recording system, mining wastewater treatment, and mineral processing because of their chemical stability and tunable magnetic characteristics. Therefore, a series of Ba1−xNixNd0.2La0.3Fe11.5O19 with x = 0, 0.01, 0.02, and 0.03 phase fractions is designed and synthesized by a conventional sol–gel auto-ignition approach. The magnetoplumbite hexagonal matrix belonging to the P63/mmc centrosymmetric space group is affirmed by X-ray diffraction (XRD) structural analysis. Bending and stretching vibrational modes of Fe and O at various wavenumbers are evident in the Fourier transform infrared spectroscopy technique, while the formation of different bands is also manifested by Raman spectra that further support the formation of M-type hexaferrites (HFs). A negative trend in magnetic parameters is perceived with an increase in Ni2+ content. Moreover, the obtained magnetic characteristics indicate the potential applicability of the synthesized hexaferrites in magnetic separation and mining wastewater remediation systems. Based on current findings, the x = 0.01 composition is optimal in designing high-density magnetic recording media, transformer cores, and hard magnets.