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ECB-ART-41150
J Nanosci Nanotechnol 2009 May 01;95:3219-23. doi: 10.1166/jnn.2009.051.
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Microwave properties of sea-urchin-like Ni nanoparticles.

Ma F , Huang J , Li J , Li Q .


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Sea-urchin-like Ni nanoparticles based on radial cones with the diameters of 30-50 nm and the lengths of 150-300 nm were synthesized by a wet chemical reduction method. The microwave properties of the Ni nanoparticle-paraffin wax composites with 11.5 vol%, 18.2 vol%, and 23.3 vol% of the sea-urchin-like Ni nanoparticles were measured in the 0.1-18 GHz frequency range. The imaginary part of complex permeability shows two broad resonance peaks due to the natural and exchange resonance. The natural resonance peak appears at a relatively higher frequency of 4.3-4.7 GHz because of the large shape anisotropy of sea-urchin-like particles. The natural resonance peak shifts to lower frequency with increasing volume fraction of the Ni nanoparticles.

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Genes referenced: LOC100887844 LOC115925415