Structural, dielectric, and thermal properties of Zn and Cr doped Mg- Co spinel nanoferrites

Abstract

Nanoferrites play a pivotal role to resolve worldwide usage of electronic and microwave devices. Spinel ferrites have exceptional structural, morphological, and dielectric properties. The composition Zn0.5–xMg0.25+xCo0.25Cr1–xFe1+xO4 (ZMCCF) where x varies from 0-0.5 with the difference of 0.25 was synthesized via auto combustion (sol-gel) route. The structural, thermal, and dielectric characterizations were done to observe the responses of variation of x in designed nanoferrites. The designed nanoferrites with a variation of x experienced promising changes in structural, thermal, and dielectric responses. With the increase in frequency, the dielectric constant decrease which is the favorable trend of spinel ferrites based on Koop’s theory. This behavior is endorsed by the different cationic distributions in the spinel structure. The maximum value of the tangent loss at low frequencies reflects the application of these materials in medium frequency devices. Therefore planned spinel nanoferrites may beneficial for advanced electronics and microwave devices.

Influence of preparation method on structural, optical and magnetic properties of synthesized Zn0.5Mg0.5−xNixFe2O4 nano-ferrite

“…Magnesium doped Nickel of zinc ferrite nanoparticles is of technological importance [1]. Ni-Mg ferrites have good chemical stability and many applications in electromagnetic and fabrication of electrical and medical devices because of their high electrical resistivity, magnetic permeability and mechanical strength, beside low dielectric loss and coercivities and [1,2]. The chemical formula of spinel ferrites is MFe 2 O 4 where M could be a bivalent metal cation.…”