Abstract

The Mg nanoparticles have been fabricated by the gas evaporation method under the several He gas pressures. We have estimated the size of Mg nanoparticles by atomic force microscopy (AFM) observation and have studied the chemical state of Mg nanoparticles exposed to atmosphere by near-edge X-ray absorption fine structure (NEXAFS) technique. The average diameters of Mg nanoparticles fabricated under 3, 5 and 10 kPa of He are 3.6, 8.0 and 5.0 nm, respectively. It is found that the degree of atmospheric oxidation of Mg nanopaticles depends on the size of nanoparticles.

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