Figure 3

X-ray diffraction patterns of Fe–Co–Ni ternary alloys: (a) as-SPS, with the inset showing minority phases, (b) annealed at 1000 °C for 2 h in 95% Ar + 5% H₂ atmosphere. Phase fractions in wt% of (c) as-SPS and (d) annealed Fe–Co–Ni ternary alloys, calculated via Rietveld refinement in TOPAS V6²⁴.