Synthesis and Stability of Filled Clusters Consisting of Cobalt- Phthalocyanine/Iron Nanoparticles

Filled clusters of cobalt -phthalocyanine/Iron nanoparticles have been obtained usingmethod of organic-inorganic composite in situ with cobalt-phthalocyanine （CoPc） andcarbonyl iron. The filled clusters consist of α-Fe nanoparticles in the inner of the nanocomposite particle and interface of CoPc layers. And interface of the α-Fe nanoparticles and surface of the clusters are completely covered by CoPc layers. Diameters of the α-Fe nanoparticles are ranged from 10nm to 15nm. And average diameter of the clusters was 1.4 μm including thickness of CoPc layers from 50 to 15onm. For the filled clusters, the density is 3.664g/cm³, the saturatation intensity of magnetization is 76.3 Am²/kg, and the coercive force is 4.15kA/m. Thermal stability of the filled clusters is excess of 150 ℃.There is a long-term stability of anti-sedimentation for the magnetorheological suspension consisting of the filled clusters and methylic silicone oil.