Low temperature elastic and anelastic properties of an i-AlPdMn single quasicrystal

R. Tarumi, Y. Yoshimoto, S. Shiomi, H. Ogi, M. Hirao, A. P. Tsai

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    The complete elastic constant tensor, i.e. the real and imaginary parts Cijkl and Qi j k l- 1, of icosahedral AlPdMn quasicrystal were measured at megahertz frequencies, from 4 K to room temperature, using electromagnetic acoustic resonance. The temperature dependence of Cijkl was analyzed using an Einstein oscillator model and a quasiharmonic approximation. The overall mode Grüneisen parameter γ is 2.0, in agreement with a previous thermal expansion measurement. Internal friction Qi j k l- 1 behaved normally throughout the measured temperature range. These results suggest that the lattice anharmonicity of i-AlPdMn is similar to usual crystalline materials despite its significant difference in structure.

    Original languageEnglish
    Pages (from-to)39-42
    Number of pages4
    JournalMaterials Science and Engineering A
    Volume442
    Issue number1-2 SPEC. ISS.
    DOIs
    Publication statusPublished - 2006 Dec 20

    Keywords

    • Elastic modulus
    • Icosahedral quasicrystal
    • Internal friction
    • Lattice anharmonicity
    • Ultrasound spectroscopy

    ASJC Scopus subject areas

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

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