In-situ HREM observation of the structural change from a fundamental-lattice decagonal quasicrystal of Al72Ni 20Co8 to the S1 type superlattice phase

Koh Saitoh, Michiyoshi Tanaka, Tadahiro Yokosawa, An Pang Tsai

Research output: Contribution to journalArticlepeer-review

Abstract

A structural change of an Al72Ni20Co8decagonal quasicrystal into the S1-type superlattice ordered phase has been observed at about 400°C by in-situ high-resolution electron microscopy. It is considered that the formation of the S1-type superlattice order is attributed to the structural change of the atom cluster with 2 nm diameter from mirror symmetric one to fivefold symmetric one and the disappearance of 1.2-nm intercluster bonds.

Original languageEnglish
Pages (from-to)253-256
Number of pages4
JournalFerroelectrics
Volume305
DOIs
Publication statusPublished - 2004 Jan 1

Keywords

  • Decagonal quasicrystal
  • In-situ high-resolution electron microscopy
  • Phase transformation
  • Superlattice order

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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