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Determination of sendust intrinsic permeability from microwave constitutive parameters of composites with sendust spheres and flakesстатья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 января 2018 г.
- Авторы: Starostenko Sergey N., Rozanov Konstantin N., Shiryaev Artem O., Shalygin Alexander N., Lagarkov Andrey N.
- Журнал: Journal of Applied Physics
- Том: 101
- Год издания: 2017
- Издательство: AIP Publishing
- Местоположение издательства: United States
- Первая страница: 245107-1
- Последняя страница: 245107-9
- Аннотация: Intrinsic permeability of sendust alloys is determined from the measured microwave permittivity and permeability of composites filled with either spherical or flaky sendust powders. The permittivity and permeability measurements are performed applying the coaxial reflection-transmission technique in the 0.05 to 18GHz frequency range. The effects of the filling factor, inclusion shape, and size on composite constitutive parameters are discussed. The permeability of metal inclusion is retrieved from the measured permeability of composites using a generalized Maxwell Garnett equation that accounts for the percolation threshold. The equation parameters are found by fitting the measured dependence of composite permittivity and permeability on frequency and filling. The inclusion dimensions calculated from the found parameters agree with the results of grain-size analyses. The alloy intrinsic permeability is retrieved from inclusion permeability with the account for skinning. The fitted frequency and damping factor of ferromagnetic resonance depend on the inclusion shape. The calculated reflectivity map of the flake-filled composite shows that sendust powders are promising fillers for interference suppressors and microwave absorbers at frequencies close to 1GHz.
- Добавил в систему: Шалыгин Александр Николаевич