Abstract
In this work, cobalt nanowires with a preferred growth orientation have been fabricated by a pulse electrodeposition method. The imaginary part of the permeability spectra for the nanowire/para-n composite samples exhibit a strong absorption peak at 6.1GHz and two minor peaks at above 10GHz. It is determined that the peak at 6.1GHz is attributed to the natural resonance mechanism and the other two peaks are caused by eddy current efiect. We have fltted the permeability spectra attributed to natural resonance using the LLG equation. Calculation based on the Kittel equation substantiates our explanation. The electromagnetic wave re∞ection loss values of the nanowire/para-n composite indicate that cobalt nanowires composites can be used for microwave absorption.
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