Effect of pressure on Martensitic transition and Curie temperatures of Fe72(Ni Pt1−)28 alloys

Abstract The electrical resistivities of Fe72(NixPt1−x)28 alloys at high pressure have been measured as a function of temperature T(K) in the range of 77.4 K . The main result is that Martensitic transition temperature TM and Curie temperature Tc in x=0.2 decreased with increasing pressure. The pressure derivatives are d T c / d P=−85.7 K/GPa and d T M / d P=−37.8 K/GPa . From this result, it is suggested that TM becomes to be the same as Tc under high pressure.