Structural-transition-driven antiferromagnetic to spin-glass transition in Cd-Mg-Tb 1/1 approximants

Farid Labib, Daisuke Okuyama, Nobuhisa Fujita, Tsunetomo Yamada, Satoshi Ohhashi, Daisuke Morikawa, Kenji Tsuda, Taku J. Sato, An Pang Tsai

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1 Citation (Scopus)


The magnetic susceptibility of the 1/1 approximants to icosahedral quasicrystals in a series of Cd85-x Mg x Tb15 (x = 5, 10, 15, 20) alloys was investigated in detail. The occurrence of antiferromagnetic (AFM) to spin-glass (SG)-like transition was noticed by increasing Mg. Transmission electron microscopy analysis evidenced a correlation between the magnetic transition and suppression of the monoclinic superlattice ordering with respect to the orientation of the Cd4 tetrahedron at T > 100 K. The possible origins of this phenomenon were discussed in detail. The occurrence of the AFM to SG-like magnetic transition is associated with the combination of chemical disorder due to a randomized substitution of Cd with Mg and the orientational disorder of the Cd4 tetrahedra.

Original languageEnglish
Article number485801
JournalJournal of Physics Condensed Matter
Issue number48
Publication statusPublished - 2020 Nov 18


  • antiferromagnetism
  • approximants
  • magnesium alloys
  • magnetism
  • spin glass

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics


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