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Tunable structures of copper substituted cobalt nanoferrites with prospective electrical and magnetic applications

  • M. I. A. Abdel MaksoudEmail author
  • Ahmed El-ghandour
  • Gharieb S. El-Sayyad
  • A. S. Awed
  • Ramy Amer Fahim
  • M. M. Atta
  • A. H. Ashour
  • Ahmed I. El-Batal
  • Mohamed Gobara
  • E. K. Abdel-Khalek
  • M. M. El-Okr
Article
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Abstract

Spinel ferrites (SFs) show high potential in different aspects of modern technology. Particularly, copper ferrite represents a promising electrode material for supercapacitors and lithium based batteries. This paper is devoted to synthesizing and characterizing nanostructured copper substituted cobalt ferrites using an eco-friendly sol–gel method. Energy dispersive X-ray (EDX) and FT-IR analyses confirm the chemical composition and the successful formation of the cubic phase of CuFe2O4, respectively. XRD analyses based on Williamson–Hall (W–H) method indicate that the average crystallite size drops from 25.1 to 12.1 nm dependent on the Cu2+ content in the samples. Further, scanning electron microscopy (SEM) reveals that the CoFe2O4 (CFO) has a honeycomb structure, which gradually disappears with the soaring of Cu2+ content in the samples and converts to a porous sponge-like shape structure. The investigated copper substituted CFO holds a high specific surface area equals to 102.5139 m2 g−1 which satisfies the contaminant adsorption applications. The measured DC resistivity (ρDC = 108 Ω m) is high enough to meet the requirements of transformer cores applications. Due to the difference in the magnetic moment between Cu2+ and Co2+ cations, the coercivity of the CFO significantly depends on the Cu2+ content; it has declined by more than 50% for the system Co0.25Cu0.75Fe2O4 in comparison to the pure CFO (Hc = 1617.30 Gauss).

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Notes

Acknowledgements

The authors thank the Materials Science Unit, Radiation Physics Department, National Center for Radiation Research and Technology, Egypt, for financing and supporting this study under the project Synthesizing and Characterizations of Nanostructured Magnetic Materials.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

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Authors and Affiliations

  • M. I. A. Abdel Maksoud
    • 1
    Email author
  • Ahmed El-ghandour
    • 2
  • Gharieb S. El-Sayyad
    • 3
  • A. S. Awed
    • 4
  • Ramy Amer Fahim
    • 5
  • M. M. Atta
    • 1
  • A. H. Ashour
    • 1
  • Ahmed I. El-Batal
    • 3
  • Mohamed Gobara
    • 6
  • E. K. Abdel-Khalek
    • 7
  • M. M. El-Okr
    • 7
  1. 1.Materials Science Lab., Radiation Physics DepartmentNational Center for Radiation Research and Technology (NCRRT), Atomic Energy AuthorityCairoEgypt
  2. 2.Center of Photonics and Smart MaterialsZewail City of Science and Technology, 6th of OctoberGizaEgypt
  3. 3.Drug Radiation Research DepartmentNational Center for Radiation Research and Technology (NCRRT), Atomic Energy AuthorityCairoEgypt
  4. 4.Physics Department, Faculty of ScienceDamietta University, New DamiettaDamiettaEgypt
  5. 5.Radiation Protection and Dosimetry DepartmentNational, Center for Radiation Research and Technology (NCRRT), Atomic Energy AuthorityCairoEgypt
  6. 6.Chemical Engineering DepartmentMilitary Technical College, Egyptian Armed ForcesCairoEgypt
  7. 7.Physics Department, Faculty of Science (Boys Branch)Al-Azhar UniversityCairoEgypt

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