Scholarlink

<p>Herein, manganese-doped magnesium zinc ferrite nanoparticles were synthesized using co-precipitation method. X-ray diffraction (XRD) analysis of the ferrite samples showed a pure spinel phase (Mg<sub>0.5</sub>Mn<sub>x</sub>Zn<sub>0.5-x</sub>Fe<sub>2</sub>O<sub>4</sub>) with a cubic spinel structure where crystallite size was observed in the range of 13 to 18&#xa0;nm, whereas the lattice parameter increased from 7.678 to 7.726&#xa0;Å with an increase in Mn<sup>2+</sup> ion concentration. The increase in crystallite size was coupled with a reduction in the lattice strain, which ranged from 0.020 to 0.007. FTIR studies showed that when Mn<sup>2+</sup> ion doping increased, the band location in the high-frequency band region decreased from 565.182 to 418.779&#xa0;cm<sup>−1</sup>.&#xa0;Five Raman active vibrational modes at 180–700&#xa0;cm<sup>−1</sup> were visible in the Raman spectra. With low coercivity, the nanoferrites displayed excellent magnetization values from 24.44 to 42.11&#xa0;emu/g. A single semicircular arc in the Cole–Cole plot described grain dominance. According to the impedance spectrometry plot, composition <i>x</i> = 0.4 exhibited the highest ac conductivity, 0.000137 S/cm, at 10&#xa0;MHz frequency, and the lowest tangent loss value, 0.553, at 1.12&#xa0;MHz frequency for <i>x</i> = 0.0 composition. As the doping level increased, the ac conductivity increased as well. None of the samples exhibit Debye behavior, as indicated by the wide range of conductivity values. The substitution of manganese ions not only affected the structural characteristics of the nanoferrites but also significantly impacted their electrical conductivity from 0.34 × 10<sup>−4</sup> to 1.3 × 10<sup>−4</sup> S/cm. These changes made Mn-substituted Mg–Zn nanoferrites promising candidates for various applications in magnetic devices and energy storage systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Structural, Electrical, Magnetic, and Electrochemical Properties of Mg0.5MnxZn0.5-xFe2O4 Nanoferrites

  • 期刊论文

  • 发表日期：

    2025年9月15日

查看全文
  • Nancy,
  • Preeti Thakur,
  • Ritesh Verma,
  • Rakesh Kumar,
  • Yassine Slamani,
  • Atul Thakur

摘要

Herein, manganese-doped magnesium zinc ferrite nanoparticles were synthesized using co-precipitation method. X-ray diffraction (XRD) analysis of the ferrite samples showed a pure spinel phase (Mg0.5MnxZn0.5-xFe2O4) with a cubic spinel structure where crystallite size was observed in the range of 13 to 18 nm, whereas the lattice parameter increased from 7.678 to 7.726 Å with an increase in Mn2+ ion concentration. The increase in crystallite size was coupled with a reduction in the lattice strain, which ranged from 0.020 to 0.007. FTIR studies showed that when Mn2+ ion doping increased, the band location in the high-frequency band region decreased from 565.182 to 418.779 cm−1. Five Raman active vibrational modes at 180–700 cm−1 were visible in the Raman spectra. With low coercivity, the nanoferrites displayed excellent magnetization values from 24.44 to 42.11 emu/g. A single semicircular arc in the Cole–Cole plot described grain dominance. According to the impedance spectrometry plot, composition x = 0.4 exhibited the highest ac conductivity, 0.000137 S/cm, at 10 MHz frequency, and the lowest tangent loss value, 0.553, at 1.12 MHz frequency for x = 0.0 composition. As the doping level increased, the ac conductivity increased as well. None of the samples exhibit Debye behavior, as indicated by the wide range of conductivity values. The substitution of manganese ions not only affected the structural characteristics of the nanoferrites but also significantly impacted their electrical conductivity from 0.34 × 10−4 to 1.3 × 10−4 S/cm. These changes made Mn-substituted Mg–Zn nanoferrites promising candidates for various applications in magnetic devices and energy storage systems.