Magnetoresistance of Electrodeposited Co/Cu Multilayer Nanowires

Abstract

Co/Cu multilayer nanowires were electrodeposited potentiostatically on highly ordered porous anodic alumina oxide templates. Scanning electron microscopy (SEM) showed that wires have diameters of about 250300 nm and length of 4050 µm. Co/Cu multilayer nanowire arrays embedded in anodic alumina oxide were mechanically polished with diamond in a suspension of oil until the wires appeared. Then the top and bottom surfaces of the material were coated with a layer of Au with a thickness of 100 nm for electrical contacts. Magnetic eld was applied by an electromagnet and resistance was measured by four point technique.

Interfacial Roughness Facilitated by Dislocation and a Metal-Fuse Resistor Fabricated Using a Nanomanipulator

“…The study of granular magnetic systems composed of magnetic nanoparticles embedded in a nonmagnetic metallic matrix has experienced growing interest in the last decade. − Their giant magnetoresistance effect (GMR) attracts continuous attention because of potential magnetic recording and magnetic nanosensing applications. ,− The main generation mechanism of GMR is the spin-dependent scattering of conducting electrons at interfaces between the magnetic particles and the nonmagnetic metallic matrix . Therefore, a detailed description of the interface is necessary to understand the GMR behavior.…”