The crystal structure of a new crystalline phase in the al-pd-cr alloy system, studied by high-resolution electron microscopy

Wei Sun, Kunio Yubuta, Kenji Hiraga

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The structure of a new crystalline phase (O-phase) in an Al72Pd18Cr10alloy, which is closely related to an AI3M11 crystalline phase and the Al-Pd-Mn decagonal quasicrystal, was investigated by electron diffraction and high-resolution electron microscopy. The O-phase has an orthorhombic structure with the lattice parameters a = 1-25 nm, b = 3-28 nm and c = 2-38 nm, and the space group is Pmmn (no. 59). This structure is characterized as a periodic tiling constructed with two types of tiles, a squashed hexagon and a star-shaped pentagon, formed with pentagonal atom columns which are structural units in the Al3Mn crystalline phase and in Al-Pd-Mn decagonal quasicrystal. Structural relationships among the O-phase, the decagonal quasicrystal and some crystalline phases are discussed.

Original languageEnglish
Pages (from-to)71-80
Number of pages10
JournalPhilosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume71
Issue number1
DOIs
Publication statusPublished - 1995 Jan 1

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy(all)

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