Arrays of ferromagnetic FeCo and FeCr binary nanocluster wires

Abstract

We report fabrication of the arrays of ferromagnetic FeCo and FeCr binary nanocluster wires (NCWs) by thermally decomposing the Fe(CO)(5)/Co-2(CO)(8) and Fe(CO)(5)/Cr(CO)(6) metal carbonyl vapors, respectively, with a resistive heater placed in the middle of a pair of permanent disc maonets. The NCWs are produced through the pileup of binary nanoclusters along the lines of magnetic flux, perpendicular to the substrates attached to a pair of permanent disc magnet surfaces. For both arrays of FeCo and FeCr binary NCWs, the diameter of individual NCWs ranges from 8 to 20 nm and the NCWs exist as bundles with their length up to 2-3 rum. We observed compositional dependence of structure. (C) 2003 American Institute of Physics.