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The study investigated the structural and morphological characteristics of nanocrystalline Cr₀.₂Ni₀.₈₋ₓCoₓFe₂O₄ samples with xx values of 0.0, 0.2, 0.4, and 0.6. The samples were synthesized via the sol-gel auto-combustion method, utilizing nitrates as the primary precursors dissolved in distilled water to form a homogeneous solution. The solution’s pH was adjusted incrementally by adding ammonia (NH3) dropwise. Following gel formation, the mixture was stirred continuously on a hot plate at approximately 120 °C to ensure uniformity. The gel underwent auto-combustion, resulting in fine nanoparticles. X-ray diffraction (XRD) analysis confirmed the single-phase cubic crystal structure of the Cr₀.₂Ni₀.₈₋ₓCoₓFe₂O₄ samples. Field emission scanning electron microscopy (FESEM) revealed the homogeneity of the nanoparticles, while energy-dispersive X-ray spectroscopy (EDAX) verified the presence of the intended elemental composition. Fourier-transform infrared (FTIR) spectroscopy identified the characteristic bonds associated with the doped elements within the nanocrystalline matrix.

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Structural and Morphological Characterization of Cr0.2Ni0.8-xCoxFe2O4 Nanocrystalline Samples Synthesized via Sol-Gel Auto-Combustion Method

  • 会议论文

  • 发表日期：

    2025年

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  • Pooja Yadav,
  • R. K. Beniwal,
  • Anchal,
  • Sarita,
  • Ritu,
  • S. N. Dolia,
  • Parvez Ahmed Alvi,
  • B. L. Choudhary

摘要

The study investigated the structural and morphological characteristics of nanocrystalline Cr₀.₂Ni₀.₈₋ₓCoₓFe₂O₄ samples with xx values of 0.0, 0.2, 0.4, and 0.6. The samples were synthesized via the sol-gel auto-combustion method, utilizing nitrates as the primary precursors dissolved in distilled water to form a homogeneous solution. The solution’s pH was adjusted incrementally by adding ammonia (NH3) dropwise. Following gel formation, the mixture was stirred continuously on a hot plate at approximately 120 °C to ensure uniformity. The gel underwent auto-combustion, resulting in fine nanoparticles. X-ray diffraction (XRD) analysis confirmed the single-phase cubic crystal structure of the Cr₀.₂Ni₀.₈₋ₓCoₓFe₂O₄ samples. Field emission scanning electron microscopy (FESEM) revealed the homogeneity of the nanoparticles, while energy-dispersive X-ray spectroscopy (EDAX) verified the presence of the intended elemental composition. Fourier-transform infrared (FTIR) spectroscopy identified the characteristic bonds associated with the doped elements within the nanocrystalline matrix.