Single crystal growth and magnetic properties of neptunium compounds

Dai Aoki, Yoshiya Homma, Hironori Sakai, Shugo Ikeda, Yoshinobu Shiokawa, Etsuji Yamamoto, Akio Nakamura, Yoshinori Haga, Yoshichika Onuki

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We grew single crystals of NpO2, NpCoGa5, NpPtGa 5 and NpGe3, and measured the magnetic susceptibilities at temperatures up to 600 K. The magnetic susceptibility in NpO2 is almost isotropic against the field direction and follows the Curie-Weiss law corresponding to the 5f3 configuration. The Curie-Weiss law was observed also in NpCoGa5 and NpPtGa5 at high temperatures, suggesting the localized nature of 5f-electrons. The suceptibility in NpGe 3 shows a broad maximum at around Tχmax = 50 K, indicating the localized to itinerant crossover occurs at Tχmax.

Original languageEnglish
Pages (from-to)36-38
Number of pages3
Journaljournal of the physical society of japan
Issue numberSUPPL.
Publication statusPublished - 2006


  • Magnetic susceptibility
  • Transuranium compound

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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