Synthesis and physicochemical properties of composites for electromagnetic shielding applications: a polymeric matrix impregnated with iron- or cobalt-containing nanoparticlesстатья
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Дата последнего поиска статьи во внешних источниках: 9 ноября 2013 г.
Аннотация:Magnetic, magnetic resonance, and structural properties of iron and cobalt nanoparticles
embedded in a polyethylene matrix were studied. The materials were prepared by thermal
decomposition of cobalt or iron formate in a polyethylene melt in mineral oil and contained
from 2 to 40% wt. of metal. Transmission electron microscopy data indicate that the average diameter
of particles is up to 8.0 nm. According to extended x-ray absorption fine structure and Mössbauer
spectroscopy studies, the particles comprise a metallic core and nonmetallic shell which is
chemically bound to the surrounding matrix. Electrophysical and magnetic properties of the materials
prepared were studied along with their reflection and attenuation factors in the super high
frequency band. The materials were found to be suitable for use in electromagnetic shielding.