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Scientists patent a new high-performance radiation-absorbing material

Photo credit: SUSU

As part of the New Advanced Materials strategic project under the Priority 2030 program, SUSU scientists have patented the development of radio-absorbing composite materials whose composition and structure provide efficient absorption of electromagnetic radiation and the ability to control this process. Currently, radiation absorbing materials are compositions and paints consisting of a polymeric binder and filler that can effectively absorb electromagnetic radiation. The disadvantages of this material include the inability to control the absorption spectrum of electromagnetic radiation. SUSU scientists have created a new material that makes it possible to regulate the absorption spectrum of the material’s electromagnetic radiation and fine-tune its magnetic microwave properties. This effect is achieved by using high entropy M-type hexaferrite structure powder material as the base of the filler.

“High entropy materials are a new class of materials of great scientific and practical interest. Today the development of suitable compositions of high entropy materials with the required properties is relevant. A powder filler made of a high entropy material with an M-type hexaferrite structure is a characteristic component of a new generation of radio-absorbing composite materials,” he commented Olga ZaitsevaAuthor of the patent, lecturer at the Institute of Industrial Engineering.

Adjusting the quantitative composition of the filler powder (Ba(Fe, Sn, Zn, Ga, Al) 12O19) and the iron content allows for a smooth change in its magnetic and electrophysical properties, which leads to the possibility of changing the degree of absorption electromagnetic radiation.

The properties of the material vary depending on the required level or power of the reflected/absorbed electromagnetic wave. This material was obtained by scientists using the solid phase synthesis method in the SUSU laboratory as part of the work under the UMNIK program. The experiments were carried out in the Crystal Growth Laboratory under the supervision of Denis Vinnik, Doctor of Chemistry. The invention can be used in the field of radio technology, in materials and coatings for absorbing electromagnetic radiation in the high-frequency range. Radiation-absorbing material is also used in anechoic measuring chambers and components for microwave devices.

South Ural State University is a university of transformation, which conducts innovative research in science and technology development. According to the strategy of scientific and technological development of the Russian Federation, the university focuses on the development of large-scale scientific interdisciplinary projects in the fields of digital industry, materials science and ecology. In 2021, SUSU won the competition within the Priority 2030 program. The university performs the functions of a regional project office of the World-Level Urals Interregional Scientific and Educational Center (UMNOC), which is designed to solve the tasks of the national project “Science and Universities”.

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Provided by South Ural State University

Quote: Scientists Patent a New High-Performance Radio-Absorbing Material (2022, November 25), retrieved November 25, 2022 from -performance-radio-absorbing-material.html

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