Modulated structure in al65cu20fe15-xmnx alloys, studied by transmission electron microscopy

Chikai Sato*, Tomoyuki Yokota, Katsuhiko Sato, Yasumasa Koyama

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Features of crystal structures of AlgsGoFexMnx alloys have been investigated by transmission electron microscopy. Electron diffraction patterns obtained experimentally show that some alloys exhibit similar diffraction patterns to those of the decagonal quasicrystal, in addition to those taken from the icosahedral quasicrystal as well as the AMn and AlFe crystalline approximants. That is, there are both diffraction patterns showing a crystal period of 1. 2 nm along one direction and a pseudo-tenfold one. with an electron incidence parallel toit. From high resolution images taken in the present works, it was also found that these patterns originate from a singlestate region. These results clearly imply that a structure characterized by these patterns can be identified as a two-dimensional modulated structure, which should be distinct from not only the icosahedral and decagonal quasicrystals but also the crystalline approximants.

Original languageEnglish
Pages (from-to)1214-1218
Number of pages5
JournalMaterials Transactions, JIM
Issue number5
Publication statusPublished - 1996


  • Alcufemn alloys
  • Pseudo-tenfold symmetry
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Engineering(all)


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