Investigation the effect of shape on the structure, magnetic microwave absorption properties of CoFe2O4 nanocomposite
Paper ID : 1422-ICNS
Authors:
Sedigheh Hoghoghifard *
Depertment of Physics, Higher Education Center of Eghlid, Eghlid, 7381943885, Iran
Abstract:
The present paper deals with the synthesis of conducting ferromagnetic polyaniline–CoFe2O4 nanocomposites via one-step chemical oxidative polymerization of aniline in the presence of CoFe2O4 nanorods (NR) and nanoparticles (NP). These nanocomposites have been characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM). The results confirmed various shapes of CoFe2O4 with different magnetic properties and anisotropy have been achieved by changing the synthesis conditions. These nanostructures that show significant properties such as high coercivity, wide hysteresis loop, large saturation magnetization and different anisotropy used as the filler in designing nanocomposite for microwave shielding which absorb the incident wave successfully. The microwave absorption properties of the nanocomposites have been measured in the frequency range of 8.2-12.4 GHz (X-band) which demonstrates that the samples have higher microwave absorption in the presence of ferrite nanostructures and NR bring better absorption properties than NP and 100-78% attenuation of incident microwaves has been achieved using NR in nanocomposite structure.
Keywords:
Conductive polymer, Nanocomposite, Ferrite, Microwave shielding.
Status : Abstract Accepted (Poster Presentation)