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Journal of Materials Science

, Volume 31, Issue 3, pp 607–610 | Cite as

Two-dimensional pentagon quasicrystal in an Al-Co-Ni-Tb alloy obtained by quenching under high static pressure

  • R. C. Yu
  • D. P. Xu
  • W. H. Su
Papers
  • 52 Downloads

Abstract

A transmission electron microscopy study of quasicrystals was carried out in Al-Co-Ni-Tb alloy which was obtained by quenching under high static pressure and a new two-dimensional pentagonal quasicrystal was discovered. An unique five-fold axis is observed in its diffraction patterns and the periodicity along the five-fold axis is 0.4 nm. Another feature of the pentagonal phase is that no extinction exists in the diffraction patterns along the direction perpendicular to the five-fold axis. A comparison of the high resolution electron microscopy images of the pentagonal phase and the decagonal quasicrystal is given. The effect of high pressure is discussed.

Keywords

Polymer Microscopy Electron Microscopy Transmission Electron Microscopy High Resolution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1996

Authors and Affiliations

  • R. C. Yu
    • 1
  • D. P. Xu
    • 1
  • W. H. Su
    • 1
    • 2
    • 3
  1. 1.Group of Solid State Physics, Department of PhysicsJilin UniversityChangchunPeople’s Republic of China
  2. 2.International Center for Materials PhysicsAcademic SinicaShenyangPeople’s Republic of China
  3. 3.Center for Condensed Matter and Radiation PhysicsCCAST(World Laboratory)BeijingPeople’s Republic of China

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