Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites

FeCoCu ternary nanoparticles distributed and stabilized in the carbon matrix of FeCoCu/C metal-carbon nanocomposites have been synthesized using controlled IR pyrolysis precursors consisting “polymer / iron acetylacetate cobalt copper acetates” type system obtained by joint dissolution components followed solvent removal. The effect synthesis temperature on structure, composition electromagnetic properties has studied. By XRD was shown that formation occurs due to interaction Fe 3 С with CoCu solid solution. An increase leads an size metal their agglomeration coalescence as a result reconstruction. Furthermore, alloy having variable may form depending content ratio metals. Raman spectroscopy crystallinity increases temperature. frequency responses relative permittivity permeability studied at 3–13 GHz. It change metals noticeably both dielectric magnetic losses. former loss is caused complex nanostructure nanocomposite while latter one originates from shift natural ferromagnetic resonance low-frequency region. reflection calculated standard method experimental data permeability. range absorption waves (from –20 –52 dB) can be varying precursor. experiment deliver better results comparison FeCo/C under similar conditions.