The invention relates to an electricity conducting material having magnetic properties constituted by an electronic conductive polymer in which are homogeneously dispersed permanent magnetic particles bonded chemically or physicochemically to the polymer or serving as a polymer dopant....http://www.google.com.au/patents/US5264157?utm_source=gb-gplus-sharePatent US5264157 - Material based on an electronic conductive polymer incorporating magnetic particles and its production process
