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<p>We report a facile synthesis of Mg<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2−<i>x</i></sub>Nd<sub><i>x</i></sub>O<sub>4</sub>, (<i>x</i>&#xa0;=&#xa0;0, 0.025, 0.050, 0.075, 0.1) employing the co-precipitation technique and the subsequent investigation of Nd<sup>3+</sup> ion doping on the structural, magnetic, and dielectric properties of Mg–Zn ferrite. X-ray diffraction (XRD) analysis confirmed the cubic spinel structure, with the crystallite sizes of samples lying between 8 and 11&#xa0;nm. FTIR study elucidated the spinel phase formation for all the compositions. Each sample demonstrated low retentivity, coercivity, and hysteresis loss, suggesting their super-paramagnetic behavior. Optical analysis revealed a progressive reduction in the bandgap values with increasing Nd<sup>3+</sup> ion doping, indicative of a redshift in the samples. Impedance spectroscopy examined the room-temperature frequency-dependent electrical and dielectric characteristics from 100&#xa0;Hz to 100&#xa0;MHz. These dielectric properties were damped by Nd<sup>3+</sup> ion inclusion and increasing the frequency. Impedance and modulus studies have been carried out and the effect of Nd<sup>3+</sup> ion doping was studied and showed smaller grains with more grain boundaries in the samples.</p>

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Structural, Magnetic, Optical, and Dielectric Properties of Nd3+ Ion-Doped Mg0.5Zn0.5Fe2−xNdxO4 Nanoparticles

  • 期刊论文

  • 发表日期：

    2025年1月12日

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  • Pallavi Saini,
  • Rohit Ranga,
  • Priya Boora,
  • Vasundhara Madaan,
  • Ashok Kumar,
  • Brij Mohan,
  • Vinita Bhankar,
  • Krishan Kumar

摘要

We report a facile synthesis of Mg0.5Zn0.5Fe2−xNdxO4, (x = 0, 0.025, 0.050, 0.075, 0.1) employing the co-precipitation technique and the subsequent investigation of Nd3+ ion doping on the structural, magnetic, and dielectric properties of Mg–Zn ferrite. X-ray diffraction (XRD) analysis confirmed the cubic spinel structure, with the crystallite sizes of samples lying between 8 and 11 nm. FTIR study elucidated the spinel phase formation for all the compositions. Each sample demonstrated low retentivity, coercivity, and hysteresis loss, suggesting their super-paramagnetic behavior. Optical analysis revealed a progressive reduction in the bandgap values with increasing Nd3+ ion doping, indicative of a redshift in the samples. Impedance spectroscopy examined the room-temperature frequency-dependent electrical and dielectric characteristics from 100 Hz to 100 MHz. These dielectric properties were damped by Nd3+ ion inclusion and increasing the frequency. Impedance and modulus studies have been carried out and the effect of Nd3+ ion doping was studied and showed smaller grains with more grain boundaries in the samples.