Whirling spin order in the quasicrystal approximant Au72Al14Tb14

Taku J. Sato, Asuka Ishikawa, Akira Sakurai, Masashi Hattori, Maxim Avdeev, Ryuji Tamura

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


A neutron powder diffraction experiment has been performed on the quasicrystal approximant Au72Al14Tb14, a body-centered-cubic crystal of icosahedral spin clusters. The long-range antiferromagnetic order was confirmed at the transition temperature TN=10.4 K. The magnetic structure consists of noncoplanar whirling spins on the icosahedral clusters, arranged in an antiferroic manner. A simple icosahedral spin-cluster model with uniaxial anisotropy accounts well the whirling spin order as well as the in-field metamagnetic transition, indicating that the icosahedral symmetry is essential.

Original languageEnglish
Article number054417
JournalPhysical Review B
Issue number5
Publication statusPublished - 2019 Aug 13

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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