Study of magnetic properties of substituted LiTiZn-ferrite for microwave antenna applications

Abstract

Ferrite is one of the most versatile magnetic materials which is frequently used for the high frequency microwave systems. The substituted lithium ferrites have been found most suitable for microwave device applications because of their inherent properties such as high Curie temperatures, high dielectric constant, high saturation magnetization & low dielectric losses. A composition of titanium substituted Li-ferrite with saturation magnetization 2200 Gauss has been synthesized and investigated which can be used for antenna applications in microwave frequency range. The material was prepared by solid state reaction technique (SSRT) and later studied for its electrical, magnetic & structural behaviors. It is observed that LiTiZn ferrite shows different magnetic behavior during DC biasing for microwave frequency antenna applications. The paper describes a precise description of LiTiZn-ferrite preparation, its characteristic plots with a detailed study of nonreciprocal behavior of LiTiZn ferrite slab or substrate under magnetic biasing.