<p>In this study, the ferrite Ni<sub>1-<i>x</i></sub>Zn<sub><i>x</i></sub>Fe<sub>2</sub>O<sub>4</sub> (<i>x</i> = 0.2, 0.4, 0.6, and 0.8) series was developed by solid-state reaction process. The x-ray diffraction (XRD) analysis revealed a single-phase cubic spinel structure with Fd3m symmetry for all the samples. Rietveld refinement of the diffraction data showed slight variations in the unit cell parameters, indicating lattice distortion due to Zn substitution. Electron density gradient analysis confirmed the preservation of crystallographic symmetry in the samples. The surface morphology appeared to be nearly spherical, with grain sizes in the micrometer range. The DC electrical conductivity measurements indicated semiconducting behavior, which followed a hopping conduction mechanism. The magnetic properties, evaluated through magnetization vs. magnetic field (M–H) loops, showed low coercivity, suggesting soft magnetic behavior at room temperature. The results indicate that these Zn-doped nickel ferrites possess desirable structural, electrical, and magnetic properties, making them potential candidates for use in memory storage and other electronic applications.</p>

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Property Tuning in Ni-Zn Ferrites via Zn Substitution: A Step Toward Functional Ferrite Materials

  • Pooja Dahiya,
  • Riya Malik,
  • Ashima Hooda,
  • Satish Khasa

摘要

In this study, the ferrite Ni1-xZnxFe2O4 (x = 0.2, 0.4, 0.6, and 0.8) series was developed by solid-state reaction process. The x-ray diffraction (XRD) analysis revealed a single-phase cubic spinel structure with Fd3m symmetry for all the samples. Rietveld refinement of the diffraction data showed slight variations in the unit cell parameters, indicating lattice distortion due to Zn substitution. Electron density gradient analysis confirmed the preservation of crystallographic symmetry in the samples. The surface morphology appeared to be nearly spherical, with grain sizes in the micrometer range. The DC electrical conductivity measurements indicated semiconducting behavior, which followed a hopping conduction mechanism. The magnetic properties, evaluated through magnetization vs. magnetic field (M–H) loops, showed low coercivity, suggesting soft magnetic behavior at room temperature. The results indicate that these Zn-doped nickel ferrites possess desirable structural, electrical, and magnetic properties, making them potential candidates for use in memory storage and other electronic applications.