Abstract
Generalized Snoek's law proposed in an integral form by Acher and coauthors is a useful tool for investigation of high-frequency properties of magnetic materials. This integral law referred to as Acher's law allows for evaluating the ultimate performance of RF and microwave devices which employ magnetic materials. It may also be helpful in obtaining useful information on the structure and morphology of the materials. The key factor in practical application of Acher's law is an opportunity to employ either measured or calculated data available over a finite frequency range. The paper uses simple calculations to check the applicability of Acher's law in cases when the frequency range is limited, and the magnetic loss peak is comparatively wide and has a distorted shape. The cases of large magnetic damping pronounced skin effect, and inhomogeneity of the material are considered. It is shown that in most cases calculation of the integral through fitting of actual magnetic frequency dispersion by the Lorentzian dispersion law results in accurate estimations of the ultimate high-frequency performance of magnetic materials.
Recommended Citation
K. N. Rozanov and M. Y. Koledintseva, "Application Of Generalized Snoek's Law Over A Finite Frequency Range: A Case Study," Journal of Applied Physics, vol. 119, no. 7, article no. 73901, American Institute of Physics, Feb 2016.
The definitive version is available at https://doi.org/10.1063/1.4941844
Department(s)
Electrical and Computer Engineering
International Standard Serial Number (ISSN)
1089-7550; 0021-8979
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 American Institute of Physics, All rights reserved.
Publication Date
21 Feb 2016
Comments
National Science Foundation, Grant IIP-1440110