Synthesis and crystal structure of a new ternary compound Ca 4Al3Mg

Q. A. Zhang, W. M. Yang, Etsuo Akiba

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Abstract

The ternary compound Ca4Al3Mg was successfully synthesized by induction melting of appropriate amounts of pure metals followed by annealing at 773 K for 14 days. The crystal structure was determined by X-ray powder diffraction. Ca4Al3Mg crystallizes in space group Pbcm (No. 57); cell parameters: a = 6.1792(1) Å, b = 24.2113(5) Å, c = 5.8864(1) Å; Z = 4. This structure can be built up of the alternating layers of two types of chains. The first type of chains consists of Al 3 triangles sharing one corner and the second one contains AlMg 2 triangles sharing one of the Mg corners. Both of them run along the crystallographic c-axis, forming atomic layers normal to the b-axis.

Original languageEnglish
Pages (from-to)123-126
Number of pages4
JournalJournal of Alloys and Compounds
Volume398
Issue number1-2
DOIs
Publication statusPublished - Aug 2 2005

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All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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