One-dimensional anti-phase structures based on an Mg12Ce (Mn12Th-type) structure in an Mg91Ce6Zn 3 alloy, studied by high-resolution transmission electron microscopy and high-angle annular detector dark-field scanning transmission electron microscopy

Masahiko Nishijima, Kenji Hiraga, Takaomi Itoi, Mitsuji Hirohashi

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The crystal structure of a new phase with an approximate composition of Mg91Ce7Zn2, which is formed as a main phase in an Mg91Ce6Zn3 alloy, has been determined by atomic-scale observations of high-resolution transmission electron microscopy (HRTEM) and high-angle annular detector dark-field scanning transmission electron microscopy (HAADF-STEM). The structure of this phase can be described as a one-dimensional incommensurate structure with an orthorhombic unit cell of a = 1.03 nm, b = 1.03 nm and c = 3.7 nm, formed by insertion of anti-phase boundaries in the fundamental Mg12Ce (Mn12Th-type) structure with a tetragonal unit cell of a0 = 1.03 nm and c 0 = 0.60 nm. The anti-phase boundaries are parallel to the (001) plane of the fundamental tetragonal structure, and an average interval of the boundaries along the [001] direction is about 3.1c0. Also, a commensurate structure with an interval of 5.5c0 is observed as a coexisting phase with the incommensurate structure.

本文言語English
ページ(範囲)805-810
ページ数6
ジャーナルMaterials Transactions
47
3
DOI
出版ステータスPublished - 2006 3

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

フィンガープリント 「One-dimensional anti-phase structures based on an Mg<sub>12</sub>Ce (Mn<sub>12</sub>Th-type) structure in an Mg<sub>91</sub>Ce<sub>6</sub>Zn <sub>3</sub> alloy, studied by high-resolution transmission electron microscopy and high-angle annular detector dark-field scanning transmission electron microscopy」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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