Single-crystal study of U(Co1-xTx)Al compounds for T = Fe and Ni

B. Janoušová, A. V. Andreev, J. Šebek, Y. Homma, Y. Shiokawa, V. Sechovský

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


UCoAl has a paramagnetic ground state, although the c-axis susceptibility shows a maximum at Tmax≈20 K. The low-T state is easily destabilized in a c-axis magnetic field or by doping by suitable elements. We report on first magnetization and specific-heat study of U(Co0.95T0.05)Al single crystals for T = Fe and Ni in fields up to 10 T. In both cases we confirmed the strong uniaxial anisotropy typical also for UCoAl. The Ni substitution yields a considerable increase of Bc whereas UCo0.95Fe0.05Al is ferromagnetic below 30 K. A detailed analysis of specific-heat data for UCoAl and UCo0.95Ni0.05Al in 0 and 10 T allows extracting entropy contributions due to spin fluctuations.

Original languageEnglish
Pages (from-to)888-890
Number of pages3
JournalPhysica B: Condensed Matter
Publication statusPublished - 2002 Mar
EventInternational Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States
Duration: 2002 Aug 62002 Aug 6


  • Metamagnetism
  • Spin fluctuations
  • UCoAl

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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