Observation of the antiferroquadrupolar order in DyB2C2 by resonant x-ray scattering

T. Matsumura, N. Oumi, K. Hirota, H. Nakao, Y. Murakami, Y. Wakabayashi, T. Arima, S. Ishihara, Y. Endoh

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31 Citations (Scopus)


We have investigated the antiferroquadrupolar (AFQ) order in DyB2C2 by resonant x-ray scattering. X rays with energies near the L3 absorption edge of Dy were employed. Superlattice peaks that correspond to three kinds of propagation vectors of (1 0 0), (1 0 1/2), and (0 0 1/2) were investigated in detail with polarization analyses. The experimental results are analyzed using a formalism of resonant x-ray scattering and a model of the AFQ order. The magnetic and quadrupolar scatterings are explained by the model satisfactorily. A detailed investigation of the critical behavior of the AFQ ordering is also reported. The critical exponent β is deduced to be 0.35, not far from the three-dimensional Heisenberg system. We have also succeeded in detecting the diffuse scattering above TQ.

Original languageEnglish
Article number094420
Pages (from-to)944201-9442011
Number of pages8497811
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number9
Publication statusPublished - 2002 Mar 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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