Abstract

Spinel ferrites exhibit exceptional magnetic properties, making them a distinctive class of magnetic materials. The sol–gel technique was utilized for the synthesis of spinel ferrites with the chemical formula Co0.6Sr0.4CexFe2–xO4. Following that, a comprehensive X-ray diffraction analysis unveiled the crystalline cubic structure of the synthesized materials. Through the utilization of the M-H loop approach, the ferromagnetic attributes of ferrites were assessed, and the assimilation of rare earth elements led to substantial enhancements in saturation magnetization, remanence, and coercivity. Spinel ferrites with a high concentration of rare earth elements have improved direct current resistivity and activation energy. The logarithm of a material's resistance increased from 5.29 to 8.12 Ω⋅cm as cerium is added. With a change in the amount of cerium, the activation energy goes up from 0.19 to 0.29. By changing the frequency from 5.5 to 9.5 GHz, the dielectric characteristics were determined. As the frequency goes up, the dielectric constant goes down. Spinel ferrites that have been made better in every way can be used in high-frequency applications.

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