"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 1, 2017

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Microwave characteristics of composite magnetic material based on Z – type hexaferrite


O. A. Dotsenko, K. O. Frolov

National Research Tomsk State University, 36 Lenin Ave, Tomsk 634050, Russia


The paper is received on December 23, 2016


Abstract. There is a growing claim for radar absorbing materials in both commercial and military purposes. The dielectric and magnetic characteristics of Z-type ferrites are the best among other radio absorbing materials at microwave frequencies. They are examples of the absorbing materials. Ceramic ferrite materials are very stable to mechanically manipulation. It is a reason to use of composite materials with ferrite powders as fillers. The magnetic permeability of mixture is less then solid ferrite. In these conditions the magnetic phase is diluted. However, there is a possibility to improve magnetic properties of composite. Frequency dependence of magnetic permeability and effect of external permanent magnetic field on characteristics of composite mixture before polymerization are discussed.

It is shown that the initial permeability of texture sample is 13 % more then raw material. A two-layer radar absorbing structure which consists of textured and nontextured layers has both superior absorbing characteristics and wide bandwidth of frequencies.

Key words: composite material, radar absorbing material, reflection coefficient, complex magnetic permeability.


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Reference to this paper:

Microwave characteristics of composite magnetic material based on Z – type hexaferrite. O. A. Dotsenko, K. O. Frolov. Zhurnal Radioelektroniki - Journal of Radio Electronics, 2017, No. 1. Available at http://jre.cplire.ru/jre/jan17/10/text.pdf. (In Russian)