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<p>Cu<sub>1-3x</sub>Zn<sub>2x</sub>Fe<sub>2+x</sub>O<sub>4</sub> (<i>x</i> = 0.0, 0.01, 0.02, 0.03, 0.04, 0.05, and 0.06) spinel ferrites were synthesized using the sol-gel method. The results demonstrated that selective Zn/Fe cation substitution can enhance the structural, optical, and magnetic properties of these ferrites. The XRD and FTIR analyses revealed a progressive structural phase transition from a tetragonal structure with <i>I4</i><sub><i>1</i></sub><i>/amd</i> space group to a cubic structure with <i>Fd</i><InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10971_2025_6794_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. UV-visible spectroscopy was employed to examine the bandgap energy of the samples, which ranged from 1.3 to 2.1 eV, with a minimum bandgap energy of 1.3 eV observed in the Cu<sub>0.82</sub>Zn<sub>0.12</sub>Fe<sub>2.06</sub>O<sub>4</sub> sample. Magnetic analysis indicated a hard-to-soft magnetic phase transition upon increasing the Zn/Fe co-substitution, characterized by a significant decrease in the coercive field and a notable increase in the saturation magnetization of the samples. These findings demonstrate the potential for tailoring the properties of spinel ferrites through selective cation substitution.</p> Graphical Abstract <p></p>

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A synergetic impact of Zn/Fe co-substitution on enhancement physical properties of copper spinel ferrite

  • 期刊论文

  • 发表日期：

    2025年5月17日

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  • Ahmad Gholizadeh,
  • Sakineh Hosseini

摘要

Cu1-3xZn2xFe2+xO4 (x = 0.0, 0.01, 0.02, 0.03, 0.04, 0.05, and 0.06) spinel ferrites were synthesized using the sol-gel method. The results demonstrated that selective Zn/Fe cation substitution can enhance the structural, optical, and magnetic properties of these ferrites. The XRD and FTIR analyses revealed a progressive structural phase transition from a tetragonal structure with I41/amd space group to a cubic structure with Fd \(\bar{3}\) 3 ̅ m space group. UV-visible spectroscopy was employed to examine the bandgap energy of the samples, which ranged from 1.3 to 2.1 eV, with a minimum bandgap energy of 1.3 eV observed in the Cu0.82Zn0.12Fe2.06O4 sample. Magnetic analysis indicated a hard-to-soft magnetic phase transition upon increasing the Zn/Fe co-substitution, characterized by a significant decrease in the coercive field and a notable increase in the saturation magnetization of the samples. These findings demonstrate the potential for tailoring the properties of spinel ferrites through selective cation substitution.

Graphical Abstract