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<p>This study investigates the magnetic, structural, and optical properties of Co<sub>x</sub>Cd<sub>1−x</sub>Fe<sub>2</sub>O<sub>4</sub> ferrite microparticles that were produced using the co-precipitation method. The FTIR spectroscopy shows two distinct and significant absorption bands that are associated with the permanent stretching vibrations of metals at tetrahedral and octahedral sites. The results of Raman scattering disclose that a rise in the Co content intensifies the local disorder at both sublattices (octahedral and tetrahedral sites). The powder XRD results revealed the formation of single-phase cubic spinel ferrite with a crystallite size in the 35–77&#xa0;nm range. The optical properties were analyzed, and a Tauc plot was produced to determine the optical band gap, which is higher for the x=1 sample (2.73&#xa0;eV). The study further examined the influence of Co<sup>2+</sup> substitution on Mössbauer parameters, such as line width, quadrupole splitting, isomer shift, and the hyperfine magnetic field. Surface morphology images were studied by AFM and SEM, while the elemental and magnetic characteristics were studied with EDS and magnetic hysteresis (M-H). Here, the Co (x = 1)-doped sample has shown the increment in magnetic moment (2.9809 µ<sub>B</sub>), which further complements the previous results.</p>

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Characterization of cobalt-substituted cadmium ferrites CoxCd1−xFe2O4: structural, optical, and magnetic insights

  • 期刊论文

  • 发表日期：

    2025年1月6日

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  • Eman Almutib,
  • Aeshah Alasmari,
  • Dalal Alhashmialameer,
  • Zaina S. Algarni,
  • Mazen R. Alrahili,
  • Ali Alzahrani,
  • A. Almalki,
  • Mukul Sharma,
  • S. M. Taqiullah,
  • Mohammad Shariq

摘要

This study investigates the magnetic, structural, and optical properties of CoxCd1−xFe2O4 ferrite microparticles that were produced using the co-precipitation method. The FTIR spectroscopy shows two distinct and significant absorption bands that are associated with the permanent stretching vibrations of metals at tetrahedral and octahedral sites. The results of Raman scattering disclose that a rise in the Co content intensifies the local disorder at both sublattices (octahedral and tetrahedral sites). The powder XRD results revealed the formation of single-phase cubic spinel ferrite with a crystallite size in the 35–77 nm range. The optical properties were analyzed, and a Tauc plot was produced to determine the optical band gap, which is higher for the x=1 sample (2.73 eV). The study further examined the influence of Co2+ substitution on Mössbauer parameters, such as line width, quadrupole splitting, isomer shift, and the hyperfine magnetic field. Surface morphology images were studied by AFM and SEM, while the elemental and magnetic characteristics were studied with EDS and magnetic hysteresis (M-H). Here, the Co (x = 1)-doped sample has shown the increment in magnetic moment (2.9809 µB), which further complements the previous results.