title: Synthesis of high coercivity core-shell nanorods based on nickel and cobalt and their magnetic properties.
abstract: Hybrid magnetic nanostructures with high coercivity have immense application potential in various fields. Nickel (Ni) electrodeposited inside Cobalt (Co) nanotubes (a new system named Ni @ Co nanorods) were fabricated using a two-step potentiostatic electrodeposition method. Ni @ Co nanorods were crystalline, and they have an average diameter of 150 nm and length of ~15 μm. The X-ray diffraction studies revealed the existence of two separate phases corresponding to Ni and Co. Ni @ Co nanorods exhibited a very high longitudinal coercivity. The general mobility-assisted growth mechanism proposed for the growth of one-dimensional nanostructures inside nano porous alumina during potentiostatic electrodeposition is found to be valid in this case too.
authors.affiliation: Department of Physics, Cochin University of Science & Technology, Cochin, 22, Kerala, India. mraiyer@yahoo.com.
authors.forename: Tn
authors.initials: T
authors.lastname: Narayanan
authors.forename: Mm
authors.initials: M
authors.lastname: Shaijumon
authors.forename: Pm
authors.initials: P
authors.lastname: Ajayan
authors.forename: Mr
authors.initials: M
authors.lastname: Anantharaman