Magnetic Interaction in FeCo Alloy Nanotube Array

Abstract

An array of FeCo nanotubes has been successfully fabricated in the pores of porous anodic aluminum oxide (AAO) templates by wetting templates method. The morphology and structure of the nanotube array were characterized by scanning electron microscopy, transmission electron microscopy and x-ray diffraction. The average diameter of the nanotubes was about 200 nm, and the length was more than 10 µm. Vibrating sample magnetometer and superconducting quantum interference device were used to investigate the magnetic properties of the nanotube array. Interaction between the nanotubes has been found to be demagnetizing as expected and the switching field distribution is broad.

Mossbauer research of Fe/Co nanotubes based on track membranes

“…5 that dependence M(H) obtained at 9 K shows increasing coercive force H c with respect to the result of measurements at 300 K. In this study, residual magnetization M r remains constant in measurements parallel to the axis of nanowires (Table 1). Increasing H c (at constant M r ) with decreasing temperature is in good agreement with the assumption of increasing contribution of crystallographic anisotropy, which competes with contribution from shape anisotropy remaining practically constant with change of temperature [25,[39][40][41]. It is known that the BBC lattice of Fe/Co alloy axis of crystallographic anisotropy typically lies in direction [1 1 0] [35][36][37] and according to our XRD data, the structure of nanotubes has a high degree of polycrystallinity.…”

“…Nanoreplicas obtained by electrochemical methods have higher density and crystallinity than the structures obtained by other methods such as electron beam lithography [20], chemical deposition from gas phase [21], pulsed laser deposition [22], and some other methods discussed in Refs. [23][24][25]. Another advantage of this method is that it allows obtaining composite ordered nanostructure arrays with controlled stoichiometry.…”

Degradation mechanism and way of surface protection of nickel nanostructures

“…NWs and NTs have a huge potential for application in nanoelectronic devices [1], for catalysis [2], high-density magnetic recording [3], bio-application [4,5]. To date a wide variety of methods for the tailored nanostructures (NSs) formation exists, such as electrochemical deposition [3,6], electron-beam lithography [7], chemical vapor deposition [8], pulsed laser deposition [9], and other methods [10][11][12][13][14][15][16][17][18][19]. Among the all range of synthesis methods, electrochemical deposition stands out, because it allows to control the structure, elemental and phase composition of the NSs by variation only of the deposition conditions [3,20,21].…”

Template Synthesis and Magnetic Characterization of Feni Nanotubes

“…For synthesis of nanostructures with high aspect ratio, there are many methods of pore filling, such as electrochemical deposition [23], an electron-beam lithography [24], chemical vapor deposition [25], pulsed laser deposition [26], and some other methods [27][28][29]. The most widely used method of metallic nanostructures synthesis is the electrochemical deposition, which allows to efficiently manage the physical and chemical properties of the nanostructures with high degree of process control [8,17,23].…”