Modification of Electrodeposited FeNi Alloys by Applying External Magnetic Field

Abstract

Alloy electrodeposition with superimposed uniform magnetic field leads to Lorentz force generation. The Lorentz force is a factor which is able to modify the deposit structure, its texture, morphology and magnetic properties. The objective of the presented research was to show the composition, morphology and the surface roughness development of Fe-Ni binary alloys electrodeposited under the influence of the uniform magnetic field. The applied magnetic field caused increase of the paramagnetic element content in the alloys. The surface roughness decrease with an external magnetic field application was observed.

The Effect of a Substrate Material on Composition Gradients of Fe-Ni Films obtained by Electrodeposition

“…This took place during experiments conducted without the participation of the EMF and at II EMF. The third case (I_ EMF) was the reason for the creation of 3D growth centers scattered over the entire surface of the sample 25 . Figure 3 shows the morphology of the applied substrates.…”

“…Three different substrates were used to study the properties of the FeNi layers deposited electrochemically on them [19][20][21][22] . All solutions were prepared using deionized water and the following chemicals: 15% [23][24][25] . The magnets were magnetized perpendicularly to the magnet's larger surface (75•10 −3 m × 50•10 −3 m) and B (II and _I_) was oriented like the x-axis in the Cartesian coordinate system.…”

“…The value of the magnetic field strength varied according to the distance from the magnet and ranged from 80•10 −3 T to 20•10 −2 T (with an accuracy of ± 2%). In the area of conducting experiments, the magnetic field was uniform and the temperature was set at 294.15 ± 1 K. The process was performed galvanostatically by means of a potentiostat/galvanostat instrument (Matrix MPS-7163) [23][24][25][26] . The Scanning Electron Microscope (SEM) was used to investigate the surface morphology of the samples.…”