Influence of substitution in Al sublattice on 5f band metamagnetism of UCoAl

A. V. Andreev, V. Sechovský, N. V. Mushnikov, T. Goto, Yoshiya Homma, Y. Shiokawa

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10 Citations (Scopus)

Abstract

The evolution of the crystal structure parameters and the magnetic behavior in the UCoAl1-xSnx and UCoAl1-xInx solid solutions was studied. The substitutions of Sn and In for Al in UCoAl lead to a rapid destabilization of metamagnetic phenomena and the appearance of ferromagnetism already for small amounts of substitutions (x ≈ 0.02). The Curie temperature (TC) and the spontaneous magnetization (Ms) in the UCoAl1-xInx compounds increase monotonously with x over the entire solubility range 0<x≤ 0.2. The Sn substitutions lead to a more complicated development of Tc and Ms, both showing a minimum with x at approximately 0.20-0.25. For higher Sn content, the material becomes magnetically hard showing a rectangular hysteresis loop, Hcreaching 1 T in UCoSn. The role of the Al, Ga, In and Sn p-electron states in the electronic structure and the evolution of 5f-electron magnetism is discussed.

Original languageEnglish
Pages (from-to)72-77
Number of pages6
JournalJournal of Alloys and Compounds
Volume306
Issue number1-2
DOIs
Publication statusPublished - 2000 Jun 23

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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