Study of the Optimal Composition of the Bath on Nucleation and Growth of Ni-Fe Alloy Thin Films
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Date
2022-12-27
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JOURNAL OF NANO- AND ELECTRONIC PHYSICS
Abstract
Ni-Fe alloy thin films are one of the oldest topics within the framework of electrochemistry because
they exhibit a range of physical properties that lead to their widespread use in a variety of applications. In
this study, the effects of bath composition and applied potential on Ni-Fe alloy thin films were investigated.
Ni-Fe thin films were electrodeposited on copper substrates at a pH of approximately 3, and the experiments
were performed at room temperature. The deposition time was equal to 10 min for all deposited
samples and the applied potential (– 1.35 V, 1 V) and bath composition (0.0.05, 0.075 and 0.1 M). The experiments
were performed using electrochemical techniques such as cyclic voltammetry (CV), and an electrochemical
method called chronoamperometry was used to develop electrolytic alloys of the Ni-Fe type by
considering the nucleation growth phenomenon. We demonstrated in fact, the concentration of the electrolyte
had almost no effect on the type of nucleation, but its effect appeared in the linearity of the curve. The
diffusion coefficient and nucleation density for instantaneous nucleation and the nucleation rate for progressive
nucleation were also evaluated and the Ni-Fe thin film deposition reaction showed nucleation and
growth (3D) under diffusion control. Germination of Ni-Fe is difficult on copper substrate surfaces for low
overpotentials, and the maximum time decreases with increasing overpotentials.
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9. Farid. Lekmine1, I. Zidani, A. Chala, A. Gana, Study of the Optimal Composition of the Bath on Nucleation and Growthof Ni-Fe Alloy Thin Films, JOURNAL OF NANO- AND ELECTRONIC PHYSICS, Vol. 14 No 6, 06022(5pp) (2022).