On the threshold of long-range magnetic order: UNi2/3Rh1/3Al and UCoAl study

V. Sechovský, O. Syshchenko, K. Prokeš, A. V. Andreev, M. I. Bartachevich, T. Goto, Y. Homma, Y. Shiokawa

Research output: Contribution to journalArticlepeer-review


We present a comparative study of magnetism in UCoAl and UNi2/3Rh1/3Al single crystals. UCoAl is commonly believed to be an itinerant 5 f-electron metamagnet with Bc < 1 T with uniaxial anisotropy. Pressure and alloying effects on the ground state point to competing ferromagnetic and antiferromagnetic interactions to be responsible for the non-magnetic ground state. UNi2/3Rh1/3Al is a solid solution between an antiferromagnet (UNiAl) and a ferromagnet (URhAl) and may have a similar underlying microscopic mechanism of the non-magnetic ground state. Possible analogies between the two compounds are discussed.

Original languageEnglish
Pages (from-to)271-274
Number of pages4
JournalCzechoslovak Journal of Physics
Issue number2
Publication statusPublished - 2002 Feb


  • Antiferromagnetic correlations
  • Metamagnetism
  • Non-Fermi liquid behavior
  • UCoAl
  • UNiRhAl


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