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The tight binding molecular dynamic (TBMD) simulation method was used to detect the mechanism of Ag nanowires self-assembling on Si(7717)-2×1 surface by mean of double step annealing. Firstly, the potential energy of Si(7717)-2×1 surface was calculated, which explained the tetramer areas of (225) subunit sites of Si(7717)-2×1 have the strongest attraction to Ag atoms adsorbed on the surface. And then,...
Magnetite (Fe 3 O 4 ) nanoparticles with mean diameter of about 7 and 13nm were prepared by partial reduction coprecipitation method and modified Massart method, respectively. Then the maghemite (γ-Fe 2 O 3 ) nanoprticles were obtained by aeration oxidizing of acidified magnetite nanoparticles aqueous suspension. The transition from magnetite to maghemite nanoparticles...
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