Nuclear resonant inelastic scattering of synchrotron radiation by icosahedral quasicrystal i-Al62Cu25.5Fe12.5 and tetragonal crystal ω-Al70Cu20Fe10

Kentaro Suzuya, Kaoru Shibata, Makoto Seto, Shinji Kitao, Yoshitaka Yoda, Yasuharu Kashihara, An Pang Tsai

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The local vibrational densities of states (VDOS) G(E) of Fe in icosahedral quasicrystal i-Al62Cu25.5Fe12.5 and tetragonal crystal ω-Al70Cu20Fe10 were measured at room temperature by using the 57Fe nuclear resonant scattering of synchrotron radiation. We found a single-band structure at about 28 meV in both the Fe-partial G(E) for i-Al62Cu25.5Fe12.5 and ω-Al70Cu20Fe10. The single-band of i-Al62Cu25.5Fe12.5 quasicrystal is broader than that of the ω-Al70Cu20Fe10 crystal. It contrasts with a strongly structured VDOS expected on theoretical grounds for the icosahedral quasicrystal. The VDOS are discussed in comparison with those obtained by inelastic cold neutron scattering.

Original languageEnglish
Pages (from-to)508-512
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume312-314
DOIs
Publication statusPublished - 2002 Oct 1
Externally publishedYes

ASJC Scopus subject areas

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

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