Quadrupolar order and structural phase transition in DyB4 with geometrical frustration

Daisuke Okuyama, Takeshi Matsumura, Hironori Nakao, Youichi Murakami

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Structural phase transition accompanying with quadrupolar ordering in DyB4 with Shastry- Sutherland type geometrical frustration has been studied by X-ray diffraction. Previous study [D. Okuyama et al.: J. Phys. Soc. Jpn. 74 (2005) 2434.] using resonant X-ray scattering revealed short-range ordering of the Ozx-type quadrupolar moments and the c-plane component of the magnetic moments in addition to long-range ordering of the c-axis component of the magnetic moments. The present report focuses on the lattice distortion below the quadrupolar ordering temperature at T N2=12.7 K. The (0 0 l=integer) fundamental lattice reflection splits into four peaks along the h and k directions and the (h=even 0 0) reflection becomes broad along the l direction. This indicates that a structural transition from tetragonal to monoclinic takes place below TN2 together with the ordering of the quadrupolar moments.

Original languageEnglish
Pages (from-to)198-200
Number of pages3
Journaljournal of the physical society of japan
Issue numberSUPPL.
Publication statusPublished - 2006


  • DyB
  • Geometrical frustration
  • Quadrupolar order

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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