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Structural, Magnetic, Electrical and Dielectric Characterizations of Co0.5Ni0.5FeCuO4 Ferrite

Author name : Ahlem Cherif Ep Najima
Publication Date : 2024-06-01
Journal Name : Journal of NanoScience in Advanced Materials (NANOSAM)

Abstract

The Co0.5Ni0.5FeCuO4 compound was elaborated using sol-gel reaction route. X-ray diffraction patterns indicated that the sample crystallize in the cubic spinel structure (Fd-3m space group). Magnetic measurements revealed that the prepared sample showed a paramagnetic-ferromagnetic transition at TC= 785K. Then, dielectric data has been carried out by means of impedance spectroscopy in a wide frequency and temperature ranges. For the sample, the activation energy Ea estimated from the slope of the linear fit plot is equal to 0.42 eV at temperature range 200-420 K. The electrical modulus and impedance studies reveal the presence of a relaxation phenomenon with non-Debye type in the prepared sample. Nyquist representation (Z″ vs. Zʹ) was plotted and their characteristic behavior was analyzed in terms of electrical equivalent circuit.

Keywords

Spinel ferrite, Activation energy, Modulus, Nyquist representation, relaxation phenomenon

Publication Link

https://doi.org/10.5281/zenodo.12540643

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