Annealing temperature dependence of crystal structures and magnetic properties of Fe 2CrAl and Fe 2CrGa Heusler alloys

R. Y. Umetsu, N. Morimoto, M. Nagasako, R. Kainuma, T. Kanomata

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

The crystal structures, spontaneous magnetic moment, I s, and the Curie temperature, T C, of Fe 2CrAl and Fe 2CrGa Heusler alloys were investigated. Single phases of A2, B2 and L2 1-type structures were obtainable in Fe 2CrAl alloy by controlling the annealing temperature. The values of the I s and T C of the A2-type phase were 2.2 μ B/f.u. and 316 K and those of the B2-type phase were 2.0 μ B/f.u. and 274 K, larger than those of the L2 1-type phase of 1.6 μ B/f.u. and 210 K, respectively. A single phase of the A2-type phase in Fe 2CrGa alloy was obtained and the I s and T C were about 2.8 μ B/f.u. and 353 K, respectively. The B2 or L2 1-type single phases of Fe 2CrGa alloy could not be obtained because of the inevitable precipitants.

Original languageEnglish
Pages (from-to)34-39
Number of pages6
JournalJournal of Alloys and Compounds
Volume528
DOIs
Publication statusPublished - 2012 Jul 5

Keywords

  • B2 and A2-type phases
  • Curie temperature
  • Heusler alloys
  • L2
  • Magnetic moment
  • Order-disorder transition temperature
  • Phase stability

ASJC Scopus subject areas

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

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