1. Surface Preparation Effect on the Growth Mechanism of Co Nanoparticles on Porous Silicon Substrate
- Author
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W. Belkacem, N. Mliki, L. Bessais, S. Aouida, W. Saikaly, B. Yangui, Mourad Telmini, Najeh Thabet Mliki, and Ezeddine Sediki
- Subjects
Materials science ,Silicon ,chemistry ,Nanocrystalline silicon ,Nanoparticle ,Magnetic nanoparticles ,chemistry.chemical_element ,Nanotechnology ,Substrate (electronics) ,Porous silicon ,Porous medium ,Superparamagnetism - Abstract
Submicron and nano‐magnetic particles have been attracting interest both from academic and industrial fields. More information concerning their structure and magnetic properties are needed for extensive development of these small particles to high‐density recording media. In this work, the growth and the magnetic behaviour of cobalt on porous silicon are studied as a function of substrate preparation. We show that rinsing the porous silicon (PS) substrates with ethanol leads to an oxidation of the layer that offers a three dimensional growth. The magnetic behaviour of Co particles grown on PS substrates is rather different than the conventional one and may exhibit a superparamagnetic effect.
- Published
- 2007
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