Crystal-structure modulation in the anomalous low-temperature phase of PrFe4P12

K. Iwasa, Y. Watanabe, K. Kuwahara, M. Kohgi, H. Sugawara, T. D. Matsuda, Y. Aoki, H. Sato

Research output: Contribution to journalConference articlepeer-review

79 Citations (Scopus)


Nature of mysterious phase transition of the filled-skutterudite PrFe4P12 has been studied by X-ray diffraction experiments. Superlattice reflections characterized by a wave vector q = (1, 0, 0) were observed below the transition temperature of 6.5 K at zero magnetic field. The observed pattern in the reciprocal space is explained by the formation of modulated structure with dominant Fe-ion displacements by about 0.02% of the lattice constant. This result is consistent with the theoretically predicted nesting of Fermi surface producing a gap formation in electronic structure.

Original languageEnglish
Pages (from-to)834-836
Number of pages3
JournalPhysica B: Condensed Matter
Publication statusPublished - 2002 Mar
EventInternational Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States
Duration: 2002 Aug 62002 Aug 6


  • Crystal-structure modulation
  • Nesting of Fermi surface
  • PrFeP
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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