Electron Paramagnetic Resonance of Percolation Soot Clusters in Polyethylene

The paramagnetism and the ac electrical conductivity of samples of a soot–polyethylene composite have been investigated. It has been established that the EPR line with the gfactor 2.0025 is asymmetric on the metal side of the insulator–metal concentration transition of the composite. It is shown that the asymmetry of the line reflects the appearance of a percolation soot cluster in the samples of the composite.