“…GPa and up to the melting temperature (Yoo et al, 2000). The ambient pressure phase diagram of Fe-Ni alloys shows the existence of both fcc and bcc phases; the fcc phase, depending on composition, has a complex magnetic behaviour, and is known to exist in different magnetic states (Hausch and Warlimont, 1973;Dubrovinsky et al, 2001;Meyer, Entel, 1995). The lower temperature field (T<400 °C) of the Fe-Ni phase diagram has a complex configuration that includes a paramagnetic low-Ni disordered fcc phase, as well as the ordered compounds FeNi (tetrataenite) and Ni 3 Fe (Guenzburger and Terra, 2005).…”