Electrodeposited conducting polymer–magnetic metal composite films

Electrically conducting polypyrrole (PPy)–iron group (Ni, Co, Fe and their alloys) composite films have been electrodeposited at cathodic process to give “tailored” soft and hard magnetism. The composites of the PPy doped with dodecylsulfate (DS) (PPy–DS) with NiFe alloy showed soft magnetism with coercivity HC,∥ <9 Oe, while the PPy–DS with CoMnP alloy showed hard magnetism with HC, ∥>1085 Oe. These results indicate that composites of conducting polymer–magnetic metals can be easily fabricated by electrodeposition.