Synthesis and magnetic properties of multilayer Ni/Cu and NiFe/Cu nanowires

Abstract

Highly ordered composite nanowires with multilayer Ni/Cu and NiFe/Cu have been fabricated by pulsed electrodeposition into nanoporous alumina membrane. The diameter of wires can be easily varied by pore size of alumina, ranging from 30 to 100 nm. The applied potential and the duration of each potential square pulse determine the thickness of the metal layers. The nanowires have been characterized by transmission electron microscopy (TEM), magnetic force microscopy (MFM), and vibrating sample magnetometer (VSM) measurements. The MFM images indicate that every ferromagnetic layer separated by Cu layer was present as single isolated domain-like magnet. This technique has potential use in the measurement and application of magnetic nanodevices.

Structural and Corresponding Magnetic Properties of Sputtered Ni/Al Multilayer Films: Effect of Ni Layer Thickness

“…Several types of magnetic materials, including alloys [1], multilayer films [2] and multilayer nanowires [3,4], have been used in a lot of studies in recent years. There are a lot of advantages in focusing on magnetic thin films since their applications are rapidly expanding in technology [5].…”

Magnetic field alignment of template released ferromagnetic nanowires

“…Moreover, using this technique single composition, 1-9 alloys, 10,11 and compositionally modulated layers can be prepared. [12][13][14] Nanostructure formation typically involves template deposition, with templates made from alumina, mica, and track-etched polycarbonate membranes. A variety of nanostructures can be formed from nanodots 15,16 to nanotubes [17][18][19] with cylindrical nanowires most commonly prepared.…”

“…A variety of nanostructures can be formed from nanodots 15,16 to nanotubes [17][18][19] with cylindrical nanowires most commonly prepared. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] In many studies, the as-deposited templated arrays of nanowires have been investigated, and this has produced significant insight into the physical behaviour of these nanowires. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] More recently, isolated individual nanowires have been studied, and these studies present the opportunity to investigate the intrinsic behaviour of individual nanowires.…”

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14] In many studies, the as-deposited templated arrays of nanowires have been investigated, and this has produced significant insight into the physical behaviour of these nanowires. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] More recently, isolated individual nanowires have been studied, and these studies present the opportunity to investigate the intrinsic behaviour of individual nanowires. [20][21][22][23][24] Isolated nanowires are obtained by releasing the nanowires from the templates using a suitable chemical solution to dissolve the template without damaging the nanostructures.…”