On the road from single, nanosized magnetic clusters to multi-dimensional nanostructures

Nanosized colloidal cobalt (Co) with primary particles in the size range 8–12 nm have been successfully obtained using a combination of oleic acid and oleyl amine to stabilise the colloids. Using a magnetophoretic technique, it was possible to create two- and three-dimensional structures. The nanostructures were characterised by transmission electron microscopy and magnetic measurements.