Iron Nanofibers Synthesized by the Electrospinning Method for Use as a GHz Band Electromagnetic Wave Absorber
Abstract:In this study, we fabricated Fe nanofibers that had a high aspect ratio and were coated by an oxidation protection layer, because electromagnetic properties are affected by the aspect ratio and oxidized layers. PVP/Fe salt nanofibers were prepared by an electrospinning method using an optimized concentration of PVP solution with Iron(III) nitrate nonahydrate (Fe(NO3)3·9H2O) solution to apply a high voltage. Subsequently, to prepare the Fe nanofibers, the PVP/Fe salt nanofibers were heated up to 600 °C in air and reduced to 450 °C in H2. The Fe nanofibers were then coated by PVP to prevent re-oxidation. The S-parameter of the prepared Fe nanofibers was measured by a network analyzer, and the power loss was calculated to estimate the EM absorption ability.
Document Type: Research Article
Publication date: 2010-01-01
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