Nanoparticle synthesis and characterization of Li–Mg–Al ferrites: Potential applications in capacitor and magnetic storage media

Abstract

Nanoparticle synthesis and characterization of Li–Mg–Al ferrites: Potential applications in capacitor and magnetic storage media. / S. S. Tirlapur, V. V. Tambe, S. S. Kakati, Sh. N. Mathad, S. V. Angadi, D. B. Shirgaonkar, A. S. Pujar, S. L. Galagali, P. R. Jeergal, C. S. Hiremath, R. B. Pujar. Nano Studies. – 2023–2024. – # 23/24. – pp. 39-50. – eng.

This study presents the synthesis and characterization of Li_0.50Mg_0.75AlxFe_2–xO₄ ferrite nanoparticles, where x varies from 0.15 to 0.60. The synthesized nanoparticles were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy-dispersive X-ray analysis (EDX), Fourier-transform infrared (FTIR) spectroscopy, dielectric properties and vibrating sample magnetometry (VSM). The XRD analysis showed that all the samples have a single-phase fcc spinel structure. The SEM images revealed the formation of spherical nanoparticles with a size range of 11–39 nm. EDX analysis confirmed the presence of constituent elements and Al substitution. FTIR spectra indicated the characteristic vibrational frequencies corresponding to metal–oxygen bonds in the spinel structure. The dielectric properties of the samples were studied as a function of frequency and temperature. The dielectric constant and dielectric loss showed a decrease with an increase in frequency. The VSM measurements showed that all the samples exhibit ferrimagnetic behavior. The magnetic properties were observed to be dependent on Al substitution with a decrease in saturation magnetization. The results indicate that Li_0.50Mg_0.75Al_xFe_2–xO₄ nanoparticles have potential applications in various fields such as capacitors, and magnetic storage media. Fig. 4, Tab. 5, Ref. 28.