Formation of nano size Si-particles

from silicon monoxide decomposition

 

M. Kikuchi1,4, M. Mamiya2, M. Hasegawa4, H. Takei3, T. Atou4,

K. Fukuoka4, S. Ito4, M. Mansori5, H. Faqir4,6, M. Kawasaki4

1 Kansei Fukushi Research Center, Tohoku Fukushi University, Sendai 989-3201, Japan

2 AIST, Tsukuba Central 5, Tsukuba, Ibaraki 305-8565, Japan

3 Graduate School of Science, Osaka University, Osaka 560-0043, Japan

4 IMR, Tohoku University, Sendai 980-8577, Japan

5 LCME, Faculty of Sciences and Techniques,Cadi Ayyad UniversityMarrakech, Morocco

6 REMINEX, Marrakech, B.P. 469 Medina, Marocco

* Corresponding author. E-mail: m.mansori@fstg-marrakech.ac.ma

Received: 26 June 2008; revised version accepted: 31 October 2008

 

Abstract

        Nano size Si particles fabricatied by shock-induced decomposition reaction of SiO was studied by shock recovery experiments to 18~39 GPa using gun method. The particle size at 18 GPa is about 20 nm, whereas the size became rapidly larger as shock pressure increase, and reach to 50 nm at 34 GPa. The particles emerged nano Si with spherical shap and single domain.

 

Keywords: Silicon;  Silicon monoxide;  Disproportionation reaction;  Shock loading;  Nano particle.

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