Abstract
The formation of ferromagnetic nanotubes (Ni, Fe, Co) and their structural and magnetic properties were investigated. Ferromagnetic behaviors were analyzed by means of magnetization measurements as a function of the applied magnetic field for different orientations. The coercive field values and remanence showed no the predominance of a specific reversal mode for magnetic moments, probably due to the imperfections in the real nanotubes if compared with the ideal conditions for theoretical predictions. For obtaining, the chemical electrodepositing using porous polycarbonate membranes as templates, with “average” pore diameter of 250 nm. A 100 nm gold layer was deposited on the opposite side of membrane, as a cathode and supporting base for nanotubes for the formation of nanotubes with diameter ranging from up to 300 nm.
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