Eclectic and economical synthesis, characterization of Li–Ba–Zn magnetic nanostructured mixed ferrites

Abstract

Augmentation in magnetic and dielectric properties of Li0.25Ba0.5-XZnXFe2.25O4 (where X = 0–0.5) suggest the effectiveness of barium doped in lower concentrations in lithium–zinc nanoferrites synthesized by solution combustion route. Different instrumental techniques have been employed to characterize their phase, size, and structural properties. X-ray diffraction analysis indicated that lithium–barium–zinc nanoferrites crystallize in the cubic spinel single phase with lattice parameter ~8.60 A, while high-resolution transmission electron microscopic studies demonstrated the formation of cubic, uniformity, and crystalline nanoferrites. Mossbauer and magnetic parameters revealed the stability and magnetic character of doped ions with the phase transition from ferrimagnetism to superparamagnetism. Dielectric parameters as a function of frequency (100 Hz–5 MHz) and temperature (~500 °C) have also been studied which exhibited low dielectric losses as compared with other ferrite materials synthesized by conventional methods. This low loss values make these materials to be applicable in nanoelectronic devices and new generation wireless communication systems that can even work at high frequencies with derived high-temperature increments.