High-temperature magnetic investigations on uranium compounds

Andrei Galatanu, Yoshinori Haga, Tatsuma D. Matsuda, Shugo Ikeda, Etsuji Yamamoto, Dai Aoki, Tetsuya Takeuchi, Yoshichika Onuki

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39 Citations (Scopus)


We investigated the magnetic property of typical uranium compounds by measuring the magnetic susceptibility in an extended temperature range up to about 800 K. The magnetic susceptibility follows the Curie-Weiss law for a localized 5f2-electron compound UPd3 and a ferromagnetic insulator UFe4P12. In most of the investigated compounds we observed a crossover effect of the 5f electrons from a low-temperature itinerant nature to a high-temperature localized one. This is found to be characteristic for ferromagnetic superconductors such as UGe2 and UIr, and also for antiferromagnets like USb2 or UNiSb2. To assess an extension of this characteristic property in the uranium compounds we also investigated typical 5f-itinerant compounds like UGa3 and UPtGa5. The crossover effect is essentially important in heavy fermion compounds such as UPt3, UPd2Al3 and URu2Si2. Even in the paramagnetic compound of UB 4, the magnetic susceptibility is not temperature-independent, but approaches a 5f-localized tendency at high temperatures. Since the samples were single crystals, we were also able to trace the evolution of the magnetic anisotropy. The high-temperature anisotropic susceptibility data were analyzed on the basis of the crystalline electric field scheme.

Original languageEnglish
Pages (from-to)1582-1597
Number of pages16
Journaljournal of the physical society of japan
Issue number5
Publication statusPublished - 2005 May


  • 5f configurations
  • Magnetic susceptibility
  • Uranium compounds

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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