Structural transformation on the pressure-induced metal-insulator transition in PrFe4P12

Daichi Kawana, Keitaro Kuwahara, Masashi Sato, Masatoshi Takagi, Yuji Aoki, Masahumi Kohgi, Hideyuki Sato, Hajime Sagayama, Toyotaka Osakabe, Kazuaki Iwasa, Hitoshi Sugawara

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We report the first X-ray diffraction experiments of PrFe4P 12 under high pressure. We discovered a symmetry lowering from cubic to orthorhombic or lower at the metal-insulator transition temperature, accompanied by a jump in the lattice constant, which indicates a first-order phase transition. The superlattice reflections at q = (1, 0 0) observed in the low-pressure nonmagnetic ordered phase are found to disappear in the insulating phase. The temperature dependence of the lattice constant and the absence of the superlattice reflections are well explained by taking into account an antiferromagnetic ordering.

Original languageEnglish
Article number113602
Journaljournal of the physical society of japan
Issue number11
Publication statusPublished - 2006 Nov
Externally publishedYes


  • First-order phase transition
  • High pressure
  • Lattice constant
  • Magnetostriction
  • PrFeP
  • Superlattice reflection
  • Symmetry lowering
  • X-ray diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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