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<p>A comprehensive investigation of Cu<sub>1-3x</sub>Zn<sub>2x</sub>Co<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub> ferrite nanoparticles has been conducted to elucidate the complex relationship between Zn/Co co-substitution and the structural, optical, and magnetic properties of the materials. X-ray diffraction analysis and Fourier transform infrared spectroscopy unveiled a structural phase transition of CuFe<sub>2</sub>O<sub>4</sub> ferrite from a tetragonal (<i>I</i>4<sub>1</sub>/<i>amd</i> space group) structure to a cubic (<i>Fd</i><InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10971_2025_6796_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="10" /> </InlineMediaObject> <EquationSource Format="TEX">\(\bar{3}\)</EquationSource> <EquationSource Format="MATHML"><math> <mover accent="true"> <mrow> <mn>3</mn> </mrow> <mo>̅</mo> </mover> </math></EquationSource> </InlineEquation><i>m</i> space group) structure with increasing Zn/Co co-substitution. UV-visible spectroscopy examination disclosed that the bandgap energy values of the synthesized samples ranged from 1.75 to 2.35 eV. Moreover, the magnetic properties of the Cu<sub>1-3x</sub>Zn<sub>2x</sub>Co<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub> samples were evaluated, exhibiting a hard-to-soft magnetic transition with increasing Zn/Co co-substitution. This transition is characterized by a sharp decrease in the coercive field of the samples, indicating a reduction in the magnetization reversal energy and an easier magnetization reversal process.</p> Graphical Abstract <p></p>

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Zn/Co co-substitution: Tuning the physical properties of CuFe2O4 nanoparticles

  • 期刊论文

  • 发表日期：

    2025年5月17日

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  • Ahmad Gholizadeh,
  • Sakineh Hosseini

摘要

A comprehensive investigation of Cu1-3xZn2xCoxFe2O4 ferrite nanoparticles has been conducted to elucidate the complex relationship between Zn/Co co-substitution and the structural, optical, and magnetic properties of the materials. X-ray diffraction analysis and Fourier transform infrared spectroscopy unveiled a structural phase transition of CuFe2O4 ferrite from a tetragonal (I41/amd space group) structure to a cubic (Fd \(\bar{3}\) 3 ̅ m space group) structure with increasing Zn/Co co-substitution. UV-visible spectroscopy examination disclosed that the bandgap energy values of the synthesized samples ranged from 1.75 to 2.35 eV. Moreover, the magnetic properties of the Cu1-3xZn2xCoxFe2O4 samples were evaluated, exhibiting a hard-to-soft magnetic transition with increasing Zn/Co co-substitution. This transition is characterized by a sharp decrease in the coercive field of the samples, indicating a reduction in the magnetization reversal energy and an easier magnetization reversal process.

Graphical Abstract