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<p>Zn-doped CuFe<sub>2</sub>O<sub>4</sub> spinel ferrites are synthesized via a sol–gel route, and the influence of Zn incorporation on their structural, optical, and magnetic properties was systematically investigated. X-ray diffraction and FTIR analyses confirm a progressive transformation of CuFe<sub>2</sub>O<sub>4</sub> from a tetragonal to a cubic spinel phase with increasing Zn content. Optical characterization using UV–vis spectroscopy shows that the band gap varies from 1.71 to 1.23&#xa0;eV, reflecting the effects of lattice distortion and cation redistribution. Magnetic measurements reveal a gradual transition from hard to soft magnetic behavior, characterized by a pronounced decrease in coercivity and a simultaneous enhancement in saturation magnetization. These findings indicate that Zn substitution effectively modulates exchange interactions and local magnetic moments, offering valuable insights into the design of ferrite materials for optoelectronic and magnetic applications.</p>

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Structure–property relationships in Zn-substituted CuFe2O4 spinel ferrites

  • 期刊论文

  • 发表日期：

    2026年1月29日

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  • Sakineh Hosseini,
  • Ahmad Gholizadeh

摘要

Zn-doped CuFe2O4 spinel ferrites are synthesized via a sol–gel route, and the influence of Zn incorporation on their structural, optical, and magnetic properties was systematically investigated. X-ray diffraction and FTIR analyses confirm a progressive transformation of CuFe2O4 from a tetragonal to a cubic spinel phase with increasing Zn content. Optical characterization using UV–vis spectroscopy shows that the band gap varies from 1.71 to 1.23 eV, reflecting the effects of lattice distortion and cation redistribution. Magnetic measurements reveal a gradual transition from hard to soft magnetic behavior, characterized by a pronounced decrease in coercivity and a simultaneous enhancement in saturation magnetization. These findings indicate that Zn substitution effectively modulates exchange interactions and local magnetic moments, offering valuable insights into the design of ferrite materials for optoelectronic and magnetic applications.