Electrodeposited nickel nanopillared structures for magnetoresistive sensors

Nanopillared structures fabricated by Ni electrochemical deposition into/onto thin porous anodic alumina are investigated to use as a magnetoresistive sensor medium. The fabrication processing features, SEM, AFM, XRD characterization results for the structures are presented. The magnetization and current transport features in Ni pillars matrix structure in the current-perpendicular-to-plane mode have been modeled. The simulation data are presented for the magnetic susceptibility effects in composite nano-pillared structures.