Influence of the electrochemical treatment on the magnetic properties of nanowires

Abstract

Synthesis of nanomaterials is one of the most researched areas. Nanomaterials are at the core of all modern nano-devices. The reduced size helps electronics to have increased performance, low energy consumption and low heat output. Properties of nanomaterials are mainly related to the involved large surface to volume ratio. Nanomaterials can be fabricated using different methods. One of the intensely used, inexpensive and with high degree of reproducibility is electrochemistry (EC), which can be used either to destroy (corrosion) or to create (thin films, nanoparticles, nanowires (NWs), etc.) materials. In this paper we focus on the effect of the electrochemical treatment (EchT) on the structural and magnetic properties of nanowires. Ni NWs were synthesized and analyzed by SQUID to study the magnetic properties induced by the EchT of the Au substrate. Ni NWs were synthesized in a gold-coated PCTE membrane using template synthesis. The EchT induced structural modifications of the Au substrate and further modifications of NWs magnetism. AFM image of the Au plated PCTE template SEM image of Ni Nanowires

Potential Controlled Co-Ni Nanowires with Compositional Gradient

“…This treatment consists of 2 steps: a Cyclic Voltammetry (CV) step that helps with the Au film cleaning, and a potentiostatic (PT) step. The main aim of this procedure is to clean the Au film surface and to favor Au atoms surface diffusion to result a flat surface [24][25][26][27][28][29][30][31]. Characterization of the Co-Ni NWs was performed using a scanning electron microscope equipped with an EDS.…”