Preparation of a conducting polymer/ferromagnet composite film by anodic-oxidation method

We report here the preparation of an electrically conducting polypyrrole/fe rromagnet composite film by means of the technique anodic-oxidation. The do ubly-functionalized composite film is flexible and has good mechanical prop erties. The composite films we synthesized exhibit ferromagnetic properties at room temperature, show low hysteresis coercive force (Hc less than or e qual to 30 Oe) in the magnetic field and has excellent environmental stabil ity especially in the acid environment. (C) 2001 Elsevier Science B.V. All rights reserved.