Preparing magnetic nanoparticles with controllable anisotropy of functional properties within a porous matrix of alumina

Abstract

To prepare magnetic anisotropic nanostructures, the films of porous alumina obtained by the two-step anodization technique were used as the matrix in this work. The electrocrystallization of metals in porous alumina allowed us to form threadlike nanoparticles with narrow size distributions and controllable geometric anisotropy. It was shown that the magnetic properties of Co anisotropic nanoparticles largely depend on the crystal structure of the sample, while the behavior of Ni nanowires in the magnetic field is fully determined by the form-factor nanostructures.