Hossain, A.K.M AkhterMustafa, Anjum2020-01-152020-01-1520192018ID 14215001http://hdl.handle.net/10361/13517This thesis is submitted in a partial fulfillment of the requirements for the degree of Bachelor of Science in Physics, 2019.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.enBrac University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.FerromagnetismAC magneticSolid stateMaterials--Magnetic properties.Thesis