Impact of cerium substitution cobalt–zinc spinel ferrites for the applications of high frequency devices

Cerium (Ce3+) substituted Co0·7Zn0.3CexFe2-xO4 spinel ferrites were prepared by using the sol-gel route. To characterize the structural, surface morphology, vibrational, dielectric, and magnetic properties, X-ray diffraction (XRD), Fourier transformation infrared (FTIR), UV spectroscopy, LCR meter, Energy dispersive X-ray analysis (EDX) and vibrating sample magnetometer (VSM) were used. The XRD patterns showed nano-crystallite single-phase structure formation. Powder XRD, SEM, and EDX analyses verified the pure phase development of Ce3+ doped Co0·7Zn0.3CexFe2-xO4 NPs. TEM analysis revealed random-shaped, sharp-edged nanoparticles with a facetted morphology. The appearance of discrete diffraction spots on the SAED pattern suggested the development of extremely crystallite nanoparticles. The dielectric loss was found to be decreasing with increasing frequency application for high-frequency devices. Microwave frequency decrease with the increase of Ce3+ ions into spinel ferrites. With a low value of Hc and a high value of Ms, shows an application for the transformer core.