Lattice distortions and phase diagram of antiferromagnetic γ-MnIr disordered alloy system

K. Sasao, R. Y. Umetsu, K. Fukamichi, A. Sakuma

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9 Citations (Scopus)


The lattice distortions and the phase diagram of antiferromagnetic γ-Mn100-xIrx disordered alloys have been investigated. The phase boundary between the face-centered-tetragonal (fct) and the face-centered-cubic (fcc) structures exists at around x = 15, being about 2-3 at.% Ir higher than that published in a previous paper. It is pointed out that the structural transformation from the fct (c>a) to the fcc structure is not necessarily accompanied by the magnetic transition from the 2Q to the 3Q spin structure state. At a much lower concentration of about x = 7, a lattice distortion to a face-centered-orthorhombic (fco) structure takes place in analogy with many kinds of γ-Mn disordered alloys.

Original languageEnglish
Pages (from-to)21-25
Number of pages5
JournalJournal of Alloys and Compounds
Issue number1-2
Publication statusPublished - 2003 Mar 24


  • Magnetic measurements
  • Phase diagram
  • Phase transition
  • Transition metal alloys

ASJC Scopus subject areas

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


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