Abstract
Tunable electromagnetic properties (permeability and permittivity) of composites filled with glass-coated microwires under external magnetic field were investigated experimentally. The microwire composites have been measured with 7 mm coaxial airline fixture and vector network analyzer from 0.01 to 18 GHz. The ferromagnetic resonance may contribute to the tunability of permeability of microwire composites. The tunability of effective dielectric permittivity may be attributed to the magneto-impedance effect. The microwire composites are promising candidates for smart or tunable applications at microwave frequency.
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Acknowledgements
L. Liu appreciates Dr. D. Maknovskiy and Dr. S. Matitsine for their valuable comments and information, and Dr. V. Larin (MFTI Ltd, Moldova) for providing the microwires. The research was supported by Defense Science and Technology Agency (DSTA), Singapore. This research was also supported by grants from the National High Technology Research and Development Program of China (863 Program) (No. 2012AA030401), the introduction of innovative R&D team program of Guangdong Province (No. 2009010005) and the Guangdong Key Project of Core Technology in Strategic Emerging Industry (No. 2011A091103003).
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Liu, L., Rozanov, K.N. & Abshinova, M. Tunable properties of microwire composites at microwave frequency. Appl. Phys. A 110, 275–279 (2013). https://doi.org/10.1007/s00339-012-7454-9
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DOI: https://doi.org/10.1007/s00339-012-7454-9