High-resolution inelastic X-ray scattering measurements of an Al72Pd20Mn8 alloy above the melting point

J. T. Okada, M. Inui, D. Ishikawa, S. Tsutsui, A. Q.R. Baron, K. Matsuda, Y. Yokoyama, Y. Watanabe, T. Ishikawa, S. Nanao

Research output: Contribution to journalArticle

Abstract

The dynamic structure factor S(Q, ω) of the melt of an icosahedral quasicrystal, Al72Pd20Mn8, was measured at 1223 K near the melting point, Tm = 1140 K, for momentum transfers, Q, from 1.5 nm-1 to 5.55 nm-1 by means of inelastic X-ray scattering technique using synchrotron radiation at SPring-8. The composition of Al72Pd20Mn8 is a special one in AlPdMn ternary alloys, since icosahedral AlPdMn quasicrystal is formed directly from the melt. The acoustic mode was observed in the low Q region, and a sound velocity was estimated to be 4170 ± 100 m/s.

Original languageEnglish
Pages (from-to)3174-3176
Number of pages3
JournalJournal of Non-Crystalline Solids
Volume353
Issue number32-40
DOIs
Publication statusPublished - 2007 Oct 15
Externally publishedYes

Keywords

  • Acoustic properties and phonons
  • Diffraction and scattering measurements
  • INVALID quasicrystals
  • Liquid alloys and liquid metals
  • Quasicrystals

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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    Okada, J. T., Inui, M., Ishikawa, D., Tsutsui, S., Baron, A. Q. R., Matsuda, K., Yokoyama, Y., Watanabe, Y., Ishikawa, T., & Nanao, S. (2007). High-resolution inelastic X-ray scattering measurements of an Al72Pd20Mn8 alloy above the melting point. Journal of Non-Crystalline Solids, 353(32-40), 3174-3176. https://doi.org/10.1016/j.jnoncrysol.2007.05.072