Experimental study of the dynamics of icosahedral phases

M. De Boissieu, K. Shibata, R. Currat, A. Q.R. Baron, S. Tsutsui, A. P. Tsai

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)

Abstract

We review experimental results obtained in the study of the dynamics of icosahedral phases by mean of inelastic neutron and X-ray scattering on single grains of the i-AlPdMn, i-ZnMgY and i-CdYb phases. Although the three phases have very different atomic structures and sound velocities, for all of them we observe two distinct regions. For small wave vectors (q<0.3 Å -1) there are well defined acoustic modes, whereas there is a series of broad dispersionless optic-like excitations at higher energy. The cross-over between the two regions is abrupt. However the detail of the interaction between acoustic modes and optic excitations depends strongly depending on the atomic structure.

Original languageEnglish
Pages (from-to)303-307
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume334-335
DOIs
Publication statusPublished - 2004 Mar 15
Externally publishedYes
Event8th International Conference on Quasicrystals - Bangalore, India
Duration: 2002 Sep 82002 Sep 13

ASJC Scopus subject areas

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

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