Matrix Synthesis, Structure and Properties of Magnetic Nanowires

Abstract

Magnetic nanowires (NWs) of pure Fe,Co, Ni, alloys FeCo, FeNi and layered Ni/Cu were obtained by galvanic deposition into the pores of track membranes. The process of deposition was investigated and non-linear character was found. The obtained ensembles of NWs were tested by SEM, TEM, X-ray, Magnetometry and Massbayer spectroscopy. Element concentration in NWs is differ from concentration of electrolyte and change slightly along the NW length (for alloys). For layer NWs the layers thickness and composition was determined. Different phases in alloys were found. Magnetometry measurements confirmed the magneto-hard properties of FeCo NWs and soft magnetic properties of FeNi NWs. It was also shown that increase of grooving voltage leads to increase of magneto-hard properties due to formation of microcrystalline structure.