Fabrication and Microwave Absorption Properties of Low Density Polyethelene-CoFe2O4 Nanocomposite
Nano-sized cobalt ferrite (CoFe2O4) has been synthesized by novel solution sol–gel auto combustion method from metal nitrates and citric acid with a final pH value of 7. X-ray diffraction pattern (XRD) results showed that the synthesized powder has nanoscale. Low density polyethylene (LDPE) nanocomposites with 3, 5 and 7 wt.% CoFe2O4 nanopowder have been fabricated with extrusion mixing and followed up by hot press to reach compact samples. The transmission/reflection measurements were carried out with a network analyzer in the frequency range of 8–12 GHz. By increasing the percent of CoFe2O4 nanopowder from 3 to 7 wt.%, reflection loss (S11) increases, while transferring loss (S21) decreases. The reflectivity (R) calculations have been produced using S11 and S21. Increase in percent of CoFe2O4 nanopowder up to 7 wt.% in composite leaded to higher reflectivity amount, and revealed that increasing the percent of CoFe2O4 nanopowder up to 7 wt.% leads to further microwave absorption in 8–12 GHz range.
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Document Type: Short Communication
Publication date: April 1, 2014
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- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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