Characterization and Determination of Elastic Property of High-Density Nanocrystalline Gold Prepared Gas-Deposition Method

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  • Tanimoto Hisanori
    Institute of Materials Science, University of Tsukuba
  • Sakai Seiji
    Institute of Materials Science, University of Tsukuba
  • Kita Eiji
    Institute of Applied Physics and Center for Tsukuba Advanced Research Alliance (TARA), University of Tsukuba
  • Mizubayashi Hiroshi
    Institute of Materials Science, University of Tsukuba

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  • Characterization and Determination of Elastic Property of High-Density Nanocrystalline Gold Prepared by Gas-Deposition Method

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Nanocrystalline (n-) Au specimens with the density of 19400±200 kg/m3 were prepared by the gas deposition method. Since rearrangement of n-Au particles on the specimen surfaces takes place just after landing, the grain boundary energy of (0.3±0.15) J/m2 is comparable with 0.45 J/m2 reported for the bulk polycrystalline (p-) Au, and the concentration of vacancy type defects is about 15×10−4 in the as deposited state decreasing with the grain growth. The Young modulus observed at 10 K is almost the same to that estimated under the condition that stresses applied to the constituent crystallites are equal among all the crystallites while strains are variable.

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