Abstract: CobaltPhthalocyanine/Iron (CoPc/Fe) nanocomposite particles were prepared using mehods of organicinorganic composite in situ with cobaltphthalocyanine(CoPc) and carbonyl iron. The structure of composite particles was characterized by density measurement, XRD, SEM and TEM. The results show that CoPc/Fe nanocomposites with density of 3.99 g•cm－3 were almost microsized regular spheroids consisting of α-Fe nanoparticles with average diameter 20 nm in inner and CoPc layer on the surface of spheroids. Further, microwave electromagnetic parameters of CoPc/Fe nanocomposite particles was measured, and the dependences of εr and μr on frequency were investigated. Compared with carbonyl iron powders, the composite permittivity εr significantly decreases while composite permability μr changes slightly, which may increases the width of microwave absorbing frequency.

Key words: Cobaltphthalocyanine, Carbonyl iron, Nanocomposite, Electromagnetic properties, Microwave