Study of the early Stage of Deposition Process for Electrodeposited Ni_100-XFe_X Thin Films

Abstract

The aim of this work is to understand the early stages in the growth mechanism of invar (Fe64Ni34) alloys and also to study the influence of potential on the evolution of their crystalline structures. Fe64Ni34 layers were deposited onto copper substrates under optimal conditions using the electrochemical method of cyclic voltammetry (CV) and chronoamperometry (CA). The influence of the potential is examined and the nucleation kinetics is discussed. In this purpose, the obtained experimental data was interpreted by applying useful theoretical methods developed by Scharifker and Hills. X-ray diffraction experiments were performed on all samples in order to follow the structural evolution of Fe64Ni34 layers as a function of the potential.

Preparation and Crystallization Kinetics of FeSiB Amorphous Ribbons under Non-Isothermal Regime

“…The ribbons preparation and the measurements took place in Slovak Academy of Sciences (Institute of Physics). The activation energy was estimated by the Kissinger model, which is described by the following Eq.1 [23][24][25]:…”

“…The calculation of the n(x) values was based on the extension of the JMAK model for non isothermal measurements and are given by Eq. 3,4 [23][24][25][26][27]:…”

“…Amorphous Fe-based ribbons are on a kinetically, metastable condition, and thus a transformation to a stable state can occur spontaneously or driven by an external energy such as heat. The present study attempts to shed light to the nucleation and growth mechanisms during solid state processes which influence the resulting microstructure and properties of these materials [1,2,13,19,[21][22][23][24][25].…”

Chronoamperometry Study of the Electrodeposited Ni_100-XP_x Alloy Thin Films

“…These results indicate that the nucleation process is instantaneous nucleation process with 3D growth under diffusion control. Pprevious studies [11,12] have shown that the initial stage of the electrocrystallization of Ni-Fe alloys are strongly affected by the applied potential and the two deposition process were observed by varying the applied potential.…”

A Novel Synthesis of Monodispersed Magnetite Nanoparticles by an Organometallic Complexed Precursor

“…Associating of the properties and structure is essential in the design of materials for engineering applications [1][2][3], which is crucial in a magnetic sensor designing and developing [4][5][6][7]. The primary determinant role of production mechanisms permit the strengthening of specific qualities of the sensor [8][9][10][11]. The development of the powders is in fact based on the type of precursor used.…”