1994/12/05 by A. Blondel, J. Meier, Bernard Doudin +1 · 1 citation
Materials Science · Physics and Astronomy · #Anodic Oxide Films and Nanostructures #Nanoporous metals and alloys #Magnetic properties of thin films
paper · doi:10.1063/1.112495
openalex publication_date 1994/12/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/26
A new technique is required which enables tailoring of the morphology of a metallic nanostructured material down to the 10 nm length scale. Using nanoporous nuclear track etched membranes as templates for electrodeposition, an assembly of wires with diameters as low as 30 nm could be obtained. Alternating the electrodeposition of two metals resulted in multilayers grown perpendicular to the wire axis. Layer thicknesses as low as 2 nm could be reached. Application is demonstrated by making wires 6 μm long, 80 nm in diameter, having a succession of either Co and Cu layers or of (Ni,Fe) and Cu layers. Wires containing layers of 5–10 nm in thickness exhibited a giant magnetoresistance. The current was naturally perpendicular to the layers. At ambient temperature, a magnetoresistance of 14% for Co/Cu and of 10% for (Fe,Ni)/Cu was observed.