Abstract
Ni nanofibers with an average diameter of about 100 nm were synthesized by a simple and cost-effective electrospinning technology. The nanofibers have a polycrystalline structure and each nanofiber is composed of fine particles. The complex permittivity and permeability properties of Ni nanofibers composite have been measured in the frequency range of 1–15 GHz. The double-resonance behavior of microwave magnetic permeability is observed. Natural resonance peak happens at 4.0 GHz with the contribution of shape anisotropy. The second resonance peak around 12.5 GHz originates from exchange resonance effect. The permeability spectra were fitted with the Landau–Lifshitz–Gibert equation. The minimum reflection loss of the Ni nanofibers composite reaches −35.4 dB at 1.3 GHz with a matching thickness of 8.4 mm, which shows promising application of the Ni nanofibers composites in microwave absorber.
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This paper is supported by the National Basic Research Program of China (2012CB933101), the Project sponsored by SRF for ROCS, SEM, and the National Science Fund of China (11074101, 51171075).
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Pan, W.W., Liu, Q.F., Han, R. et al. Microwave absorption properties of the Ni nanofibers fabricated by electrospinning. Appl. Phys. A 113, 755–761 (2013). https://doi.org/10.1007/s00339-013-7584-8
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DOI: https://doi.org/10.1007/s00339-013-7584-8