Synthesis of Nickel Silicide/Silicon/Silica Composite Nanostructures by Coevaporation of SiO Powder and Nickel Formate

Abstract:

Nickel silicide/silicon/silica composite nanostructure, i.e., Ni31Si12/Si/SiO2, was synthesized successfully by a coevaporation method, using nickel formate and SiO powder as the source materials. The structure of product was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS), transmission electron microscopy (TEM) and high resolution transmission electron microscope (HRTEM). The results indicated that the product had a rod morphology, which consisted of three parts with different morphologies and crystallographic structures. The top of the rod was a polycrystalline nickel silicide (Ni31Si12) nanoball with average diameter of 100 nm; the middle part was a single-crystal Si short rod with average diameter of 80 nm; the bottom part was an amorphous silicon oxide nanowire with average diameter of 60 nm. A possible growth mechanism of the composite nanorod was briefly discussed

• Periodical: Advanced Materials Research (Volumes 181-182)
• Pages: 599-603
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.181-182.599
• Online since: January 2011
• Authors: Yang Cao, Gang Zhou, Jun Hui He
• Keywords: Composite, Nanostructure, Nickel Formate, Nickel Silicide, Silicon

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