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,∥< 9Oe, while the PPy–DS with CoMnP
alloy showed hard magnetism with HC,∥> 1085Oe. These results indicate that composites
of conducting polymer–magnetic metals can be easily fabricated by electrodeposition.