Phase stability of B2 and L21 ordered phases in Co2YGa (Y=Ti, V, Cr, Mn, Fe) alloys

K. Kobayashi, K. Ishikawa, R. Y. Umetsu, R. Kainuma, K. Aoki, K. Ishida

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The B2/L21 order-disorder and magnetic transitions in Co2YGa (Y=Ti, V, Cr, Mn, Fe) alloys were investigated by electron probe microanalysis (EPMA), differential scanning calorimetry (DSC) and vibrating sample magnetometry (VSM). It was confirmed that the B2/L21 order-disorder transition temperature for the Co2YGa (Y=Ti, V, Cr) alloys monotonically decreases with increasing electron concentration of the Y site, whereas that of the Co2YGa (Y=Mn, Fe) alloys is almost constant at 1100±100 K. On the other hand, the Curie temperature TC of all the alloys rises almost monotonically with increasing electron concentration of the Y site.

Original languageEnglish
Pages (from-to)1794-1795
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 2
DOIs
Publication statusPublished - 2007 Mar 1

Keywords

  • Curie temperature
  • Half-metallic ferromagnet (HMFs)
  • Heusler phase
  • Order-disorder phenomenon
  • Phase diagram of metals and alloys

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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