Synthesis, characterisation and magnetic/electrical properties of the magnesium-doped Li??Zn nanoferrites

Nano-sized magnesium-doped Li-Zn mixed ferrite system, Li_0.25Mg_0.5-xZn_xFe_2.25O₄ where X varies from 0 to 0.5 in steps of 0.1 has been prepared by novel solution combustion method using oxalyl-dihydrazide as capping agent and were characterised by X-ray diffraction, infrared, Mössbauer studies and transmission electron microscopy (TEM). The magnetic and electrical properties of the nanoparticles have been investigated by vibrating sample magnetometer and two-probe method, respectively, and results are compared with bulk materials. TEM and electrical studies reveal the formation of one-dimensional semiconducting nanorods that find an extensive application in lithium batteries and in the fast-paced miniaturisation of modern electronic devices. The variation in dielectric constant with frequency has been studied.