Nano-icosahedral Al-Mn-Ce phases: Structure and local configurations

R. Manaila, D. Macovei, R. Popescu, A. Devenyi, A. Jianu, E. Vasile, P. B. Barna, J. L. Lábár

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Abstract

An icosahedral (i) Al-Mn-Ce nanophase is formed in rapidly quenched alloys. Ce induces a gradual change of the six-dimensional (6D) lattice from a simple icosahedral (SI) to a face-centered icosahedral (FCI) symmetry with relaxation of lattice distortions. X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) data support Ce location on FCI sites, although off-center positions are suggested.

Original languageEnglish
Pages (from-to)82-85
Number of pages4
JournalMaterials Science and Engineering A
Volume294-296
DOIs
Publication statusPublished - Dec 15 2000

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ASJC Scopus subject areas

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

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