Hossein Nikmanesh

In recent years, with the increasing development of radar, electronics, wireless and microwave technologies, magnetic ferrites with a narrow line of magnetic resonance are widely needed. Barium ferrites are one of the best materials for absorbing microwaves due to their large magnetic crystalline anisotropy, chemical and thermal stability. These nanoscale materials are widely used in the production of permanent ultrasounds, storage and recording of high-density information, as well as various up-to-date devices in the microwave industry. Hexagonal barium ferrites with contaminated materials have attracted the attention of many scientists and industry due to their low cost and high magnetic susceptibility. Barium ferrite powders of the M-type are suitable fillers for the development of electromagnetic adsorbents at macrowave frequencies. These materials have properties such as low production cost, low density, good stability, high electrical resistance and high magnetic dissipation in the microwave area, although low electrical loss limits their use. Recently, many attempts have been made to develop composites consisting of both electric and magnetic fillers so that they have both electrical and magnetic dissipation.