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New Insights into the Generation Mechanism of Quasicrystal by the Surface Reaction Between Ultrafine Particles and Deposited Clusters

Author

Listed:
  • O. Kido

    (Department of Nanophysics in Frontier Project, Ritsumeikan University, Kusatsu-shi, Shiga, 525-8577, Japan)

  • C. Kaito

    (Department of Nanophysics in Frontier Project, Ritsumeikan University, Kusatsu-shi, Shiga, 525-8577, Japan)

  • Y. Saito

    (Department of Electronics and Information Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, 606-8585, Japan)

Abstract

On heating Mn-deposited Al particles (Mn–Al specimen) at 300°C, diffraction spots due to a Al86Mn14quasicrystal appeared, in addition to those due to Al6Mn alloy. On heating a specimen of the Al-deposited Mn particles (Al–Mn specimen), Al50Mn50alloy was formed. Neither the quasicrystal nor Al6Mn phases appeared. The electron microscope images of the Mn–Al specimen showed the existence of void clusters in the Al particles. This indicates that the alloys and the quasicrystals were produced by the diffusion of Al atoms to the Mn clusters. In the case of the Al–Mn specimen, the surface of Mn particles was covered with an Al thin film of uniform thickness. The surface Al layer changed to Al50Mn50alloy. These results indicate that the diffusion direction of atoms and diffusion rates are different between Mn–Al and Al–Mn systems.

Suggested Citation

  • O. Kido & C. Kaito & Y. Saito, 2003. "New Insights into the Generation Mechanism of Quasicrystal by the Surface Reaction Between Ultrafine Particles and Deposited Clusters," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 10(02n03), pages 461-466.
    • Handle: RePEc:wsi:srlxxx:v:10:y:2003:i:02n03:n:s0218625x03004871
    DOI: 10.1142/S0218625X03004871
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