Neutron scattering study of antiferromagnetic correlations in the Zn-Mg-Ho icosahedral quasicrystal

Taku J. Sato, Hiroyuki Takakura, An Pang Tsai, Kaoru Shibata, Kenji Ohoyama, Ken H. Andersen

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

Magnetism in the Zn-Mg-Ho icosahedral quasicrystal has been studied by neutron scattering. Powder samples of the icosahedral and related crystalline phases were reexamined to clarify the origin of the previously-reported long-range magnetic order [Charrier et al., Phys. Rev. Lett. 78 (1997) 4637]. The long range order was found to originate from the related crystalline phase, which is a contaminant in the previously-used samples. Whereas for high-quality icosahedral phase, we could detect only magnetic diffuse scattering. This apparently shows the absence of the long range order in the icosahedral phase. The diffuse scattering was studied in detail by using a single quasicrystalline sample. It was found that the diffuse scattering appears as satellites from intense nuclear Bragg reflections. This indicates that corresponding spin correlations can be regarded as developed between spins on the six-dimensional virtual hypercubic lattice. A magnetic modulation vector for the correlations is proposed.

Original languageEnglish
Pages (from-to)415-426
Number of pages12
JournalMaterials Research Society Symposium - Proceedings
Volume553
Publication statusPublished - 1999 Jan 1
Externally publishedYes
EventProceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998' - Boston, MA, USA
Duration: 1998 Nov 301998 Dec 3

ASJC Scopus subject areas

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

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