Decagonal structure of Al72Ni20Co8 studied by atomic-resolution electron microscopy

Eiji Abe, An Pang Tsai

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

We study the atomic structure of an Al72Ni20Co 8 decagonal quasicrystal by a complementary use of conventional high-resolution transmission electron microscopy (HRTEM) and annular dark-field scanning transmission electron microscopy (ADF-STEM). The chemical ordering of the structure is derived from atomic-resolution ADF-STEM with Z-contrast (Z is the atomic number), highlighting the heavy atom positions. Details on the total atomic arrangements, including the relatively light constituent elements, are examined by HRTEM with phase contrast. The present results demonstrate that a combination of HAADF-STEM and HRTEM is quite powerful for complicated intermetallic structures, enabling a reliable structural analysis to be made based on electron microscopy.

Original languageEnglish
Pages (from-to)198-201
Number of pages4
JournalJournal of Non-Crystalline Solids
Volume334-335
DOIs
Publication statusPublished - 2004 Mar 15
Externally publishedYes
Event8th International Conference on Quasicrystals - Bangalore, India
Duration: 2002 Sep 82002 Sep 13

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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