Influence of 𝑳�𝒊�+ Substitution on Magnetic and Electrical Properties of 𝑳�𝒊�𝒙�𝑪�𝒖�𝟎�.𝟓�𝒁�𝒏�𝟎�.𝟓�−𝟐�𝒙�𝑭�𝒆�𝟐�+𝒙�𝑶�𝟒�

Abstract

Structural, AC magnetic and electrical properties of 𝐿𝑖𝑥𝐶𝑢0.5𝑍𝑛0.5−2𝑥𝐹𝑒2+𝑥𝑂4 (x=0.00, x=0.05, 0.10) have been investigated which were prepared by solid state reaction method. Various chemical compositions were calcined at 800 C and samples of these compositions were sintered at 950, 1000, 1050 and 1100 C in air for 5 hours. The X-ray diffraction analysis, SEM (Scanning Electron Microscopy) and EDS (Energy Dispersive Spectroscopy) results were performed on the samples sintered at 1000 C. X-ray diffraction pattern confirms the formation of single phase cubic spinel structure and the lattice parameter decreases with the increase of 𝐿𝑖+ content obeying Vegard’s law. EDS report showed the homogeneous distribution of elements in the samples. The bulk density, permeability and permittivity decreases with the 𝐿𝑖+ substitution. At high frequency it is found that the permeability is almost stable but the permittivity falls with the 𝐿𝑖+ substitution.