Investigating the microwave absorber nanoparticles

The researches about electromagnetic absorber material design are accelerated the developments of the technology and increased attention towards radar absorption technology. Thus, studies conducted about nanoparticles composite material and textile fibers covered with nanometals and their composition to develop nanocomposite material which was planned to design as RAM (Radar Absorption Material).In this dissertation with the concept of `Investigating the microwave absorber nanoparticles?, it was thought magnetic and dielectric absorbers should be used together to gain high microwave absorption. Thus, magnetic nanoparticles and and nanocomposite powder materials including dielectric absorbers were synthesized, and then electromagnetic wave reflection and transmission properties of synthesized magnetic hexaferrite nanoparticles were investigated between the 8.2-18 GHz frequencies. After that polyacrylnitrile (PAN) were covered with nanometal powders and their microwave absorption properties were investigated.Magnetic (BaM)-dielectric (TiO2) materials and nanocomposite samples including various conducting polymers (PANI, PPy) were prepared as fill material in different thickness level. Also appropriate reliable measurement techniques and conditions to get maximum absorption at broadest frequency interval were determined.Light materials made of nanoparticles have 99 % absorption level were generated with the developed techniques and methods. Also, reflection loss-RL values, which are generally calculated by using physical parameters (dielectric permittivity and magnetic permeability) of composite covered with Ni, Co and Ni0.5Co0.5 at different periods and dielectric and magnetic loss tangents, were generated as a result of NRW (Nicolson-Ross-Weir) algorithm.To sum up, basic investigations were conducted by using appropriate nanoparticles and linen materials that were generated as a result of this study to design a nanocomposite material which can be transformed to a high absorption technological product.