Magnetic properties of U1-xLuxNiGa solid solutions

A. V. Andreev, V. Sechovský, P. Javorský, M. I. Bartashevich, T. Goto, Y. Homma, Y. Shiokawa, D. Rafaja

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2 Citations (Scopus)


Crystal structure, magnetization and specific-heat studies were performed on (U1-xLux)NiGa solid solutions in order to investigate effects of the U sublattice dilution by Lu on antiferromagnetism in UNiGa. In contrast to a number of transitions observed in UNiGa, the Lu substituted materials exhibit only one magnetic phase transition at which they order antiferromagnetically. Both the temperature of magnetic ordering and the estimated U magnetic moment decrease almost linearly with increasing x and vanish around x=0.3 which is accompanied by vanishing magnetic entropy. Simultaneously the critical field of metamagnetic transition increases but the transition obviously disappears for x>0.2. The rapid loss of magnetism with dilution of the U sublattice by nonmagnetic Lu is attributed to the band character of magnetic U 5f electrons.

Original languageEnglish
Pages (from-to)29-33
Number of pages5
JournalJournal of Alloys and Compounds
Issue number1-2
Publication statusPublished - 2001 Apr 26


  • Antiferromagnetism
  • Metamagnetism
  • U substitution by Lu
  • UNiGa


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