title: Synthesis and characterization of CoFe2O4/polyaniline nanocomposites for electromagnetic interference applications.
abstract: The Cobalt ferrite (CoFe2O4) powders were synthesized by Co-precipitation method. The as prepared ferrite powders were incorporated into a polyaniline matrix at various volumetric ratios. The as prepared composites of ferrite and polyaniline powders were characterized using X-ray diffraction (XRD), transmission electron microscope (TEM). The particle size of CoFe2O4 is found to be 20 nm. The saturation magnetization (M(s)) of all the composites was found to be decreasing with decrease of ferrite content, while coercivity (H(c)) remained at the value corresponding to pure cobalt ferrite nanopowders. The complex permittivity (epsilon' and epsilon") and permeability (mu' and mu") of composite samples were measured in the range of 1 MHz to 1.1 GHz. The value of epsilon' and mu' found to be increased with ferrite volume concentration.
authors.forename: K
authors.initials: K
authors.lastname: Praveena
authors.forename: S
authors.initials: S
authors.lastname: Srinath
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry* / Q000528:radiation effects; D003035:Cobalt / Q000737:chemistry* / Q000528:radiation effects; D003460:Crystallization / Q000379:methods; D004574:Electromagnetic Fields; D005290:Ferric Compounds / Q000737:chemistry* / Q000528:radiation effects; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D010316:Particle Size; D011835:Radiation Protection / Q000379:methods*
chemical_list: D000814:Aniline Compounds; D005290:Ferric Compounds; C416807:polyaniline; C000499:ferric oxide; D003035:Cobalt