ELECTRODEPOSITED NANOSTRUCTURES

Electrodeposition may be used to prepare a range of nanostructured mat erials with interesting magnetic and magnetotransport properties. For example, on annealing, Co-Ni-Cu/Cu alloy superlattices electrodeposite d from a single electrolyte show a previously unreported transition fr om giant magnetoresistance (GMR), to anisotropic magnetoresistance (AM R), and then back to GMR. Superlattice nanowires, electrodeposited in the pores of nuclear track-etched polycarbonate membranes, are another example of an electrodeposited nanostructure. They may be considered as columns of disc-shaped magnetic particles with diameter e.g. 80 nm and thickness e.g. 1 nm separated by non-magnetic material. Here we pr esent evidence for demagnetizing interactions in such samples.