X-ray diffraction analysis and magnetic behavior of amorphous Fe15Co17Ni58B10 nanowires obtained by electrochemical deposition

Abstract

Fe 15 Co 17 Ni 58 B 10 nanowire arrays have been deposited in alumina templates by electrochemical deposition. For comparison, the same alloy was used to deposit films on CuBe substrate. The change in boron concentration from 3% to 10% in the electrolyte promoted the amorphous phase in the films on the CuBe substrate and a partial amorphous phase in the nanowires. Thermal treatment of the deposited films and nanowire arrays at 600°C promoted recrystallization. Magnetic hysteresis loops for 100 and 200 nm nanowire arrays are "wasp waisted." There is no evidence of a sharp reversal for the out-of-plane or in-plane hysteresis loops, just a smooth curve indicating a coherent rotation during the magnetization reversal. Annealing the 200 nm nanowire array at 600°C for 1 h gives rise to a mixed hysteresis loop, which can be attributed to competing domain configurations. An alternative explanation for this behavior is that there might be a phase separation between Fe, Ni, and Co in the nanowire environment due to the short range ordering of the alloy.

Nanostructures of Ni and NiCo Amorphous Alloys Synthesized by a Double Composite Template Approach

“…Especially Ni-based alloy nanomaterials are attractive because of their catalytic and magnetic properties for application in magnetic recording media, sensors, catalysts, and nanoelectrodes. [28][29][30][31] Although alot of studies are concerned with amorphous Ni-based alloy nanomaterials, [32][33][34][35][36] the new 2D nanostructure and the relationships between structure/component and property still need to be explored.…”

“…The amorphous metal−metalloid nanoalloys with plenty of dangling bonds have attracted considerable attention because they combine the characteristics of amorphous alloys with chemical disorder structure and nanoscale size. Especially Ni-based alloy nanomaterials are attractive because of their catalytic and magnetic properties for application in magnetic recording media, sensors, catalysts, and nanoelectrodes. − Although alot of studies are concerned with amorphous Ni-based alloy nanomaterials, − the new 2D nanostructure and the relationships between structure/component and property still need to be explored.…”

Effect of boron concentration on the magnetic properties of (FeCoNi) 100−xBx (x=15 and 20wt%) nanowire arrays

“…The X-ray diffractogram with 10% boron showing partially amorphous phase has been presented in our previous work [7]. The amorphous structure can be seen in Figs.…”

Effects of Nickel addition on the microwave permeability spectra of sputtered Fe–Co–Ni–B thin films

“…Therefore, as Nickel is well known for its effects on removing the film stress as well as enhancing the saturation magnetization, a series of FeCoNiB films were fabricated to improve the soft magnetic properties and high-frequency characteristics up to GHz frequency range [5][6][7]. In this paper, the investigation is mainly based on the effects of Nickel addition on the microwave permeability spectra in the (Fe 40 Co 40 B 20 ) 1 with appropriate Nickel content, including excellent larger saturation magnetization, higher ferromagnetic resonant frequency, and higher resistivity than that shown in previous studies.…”