Nd-ion Substitution Effect on f-electron Multipole Order of PrRu4P12

Kazuaki Iwasa, Ari Yonemoto, Shigeru Takagi, Shinichi Itoh, Tetsuya Yokoo, Soshi Ibuka, Chihiro Sekine, Hitoshi Sugawara

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


We studied the effect of magnetic Nd-ion substitution on the metal-nonmetal transition at a transition temperature of 63 K of PrRu4P12, which is characterized by antiferro-type electric multipole ordering of Pr-ion 4f electrons. The transition temperature of Pr1-xNdxRu4P12 depends weakly on the Nd concentration x as compared to Laand Ce-substituted compounds. Inelastic neutron-scattering measurements revealed that the energies and widths of crystalline field excitation peaks of Pr 4f 2 in Pr0.85Nd0.15Ru4P12 are very similar to those of PrRu4P12. These experimental results indicate that the ordered state is robust against the substitution of magnetic Nd ions as compared to the La and Ce substitutions. Magnetic interactions between the Pr ions and the Nd ions in Pr1-xNdxRu4P12 help stabilize the magnetic triplet ground state of the Pr ions that appears in the antiferro-type multipole ordered phase. Therefore, the nonmagnetic multipole ordered phase of PrRu4P12 is compatible with the magnetic perturbation.

Original languageEnglish
Pages (from-to)179-186
Number of pages8
JournalPhysics Procedia
Publication statusPublished - 2015
Event20th International Conference on Magnetism, ICM 2015 - Barcelona, Spain
Duration: 2015 Jul 52015 Jul 10


  • Electron multipole
  • Metal-nonmetal transition
  • Neutron scattering
  • X-ray diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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