Magnetic and Dielectric Studies of Iron Nanoparticles

Abstract

Iron nanoparticles were synthesized by sol-gel protocol. The techniques of XRD, FTIR, RAMAN, SEM, EDX, and VSM were used to characterize the ferrite nanoparticles. Through the characterization of the prepared iron nanoparticles, the effect of annealing temperature, chemical composition and preparation technique on the microstructure, magnetization and the particle size of the ferrite nanoparticles are discussed.XRD results clearly show that the lattice parameter and crystallite size are increased with annealing temperature. SEM photograph of the sample shows the shape of the particles is almost spherical. The magnetic properties of the iron oxide magnetite nanoparticles were investigated with a Vibrating Sample Magnetometer. Magnetic measurements at room temperature showed improvements in the saturation magnetization with increase in annealing temperature, which might be related to increase in particle size. Dielectric constant and dielectric loss were observed. The effect of annealing temperature on the magnetic properties of the samples is analyzed by vibrating sample magnetometer (VSM) and Dielectric properties are also measured.