Magnetic properties of UFe5Sn single crystals

António Pereira Gonçalves, J. C. Waerenborgh, M. Almeida, M. Godinho, I. Catarino, G. Bonfait, H. Noël

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Millimetre-size UFe5Sn single crystals were grown by the top seed solution growth method and characterized by magnetization, 57Fe Mössbauer spectroscopy and specific heat measurements in order to study the magnetic transitions detected in powder samples at 248 and 178 K. The magnetization measurements show different behaviour along the three crystallographic directions but with similar values of spontaneous magnetization along a and c. The transition at 248K is associated with ferromagnetic ordering of iron moments along the c-axis, while the transition at lower temperature is associated with a reorientation towards b. Mössbauer data show that this reorientation is concomitant to the ordering of the Fe2 sites, which in a large proportion remain paramagnetic between the two transition temperatures. Specific heat measurements are consistent with the establishment of magnetic ordering at 248 K, followed by a spin reorientation at 178 K, yielding γ(0 K)≅140 mJ/(molK2) and θ≅290 K for UFe5Sn.

Original languageEnglish
Pages (from-to)473-479
Number of pages7
JournalJournal Of Magnetism And Magnetic Materials
Volume260
Issue number3
DOIs
Publication statusPublished - 1 Apr 2003

Keywords

  • CeCuAu-type structure
  • Magnetic intermetallic
  • UFeSn
  • Uranium intermetallic

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