High-field magnetization in transuranium compound

K. Sugiyama, H. Nakashima, D. Aoki, S. Ikeda, Y. Haga, E. Yamamoto, A. Nakamura, Y. Homma, Y. Shiokawa, K. Kindo, M. Hagiwara, Y. Onuki

Research output: Contribution to journalArticlepeer-review


We measured the high-field magnetization up to 55 T and constructed a magnetic phase diagram for a transuranium antiferromagnet NpRhGa5 with the tetragonal structure. The magnetization at 4.2 K for H ∥ [1 0 0] indicates a sharp metamagnetic transition with a step at Hc = 26 T and saturates above Hs = 38 T, reaching 0.43 μB / Np. An ordered moment of 0.96 μB / Np at zero field, which was determined from the neutron scattering experiment, is found to be reduced to 0.43 μB / Np at Hs, together with an orientation of the magnetic moment from the (0 0 1) plane to the (1 0 0) plane.

Original languageEnglish
Pages (from-to)1789-1791
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Issue number2 SUPPL. PART 2
Publication statusPublished - 2007 Mar


  • High field magnetization
  • Magnetic anisotropy
  • Metamagnetic magnetization
  • NpRhGa

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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