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