Magnetic properties and structure of (FexCo100−x)3Pt alloy thin films

Abstract A study of the magnetic properties of (Fe x Co 100− x ) 3 Pt (0⩽ x ⩽50) ternary alloy thin films in conjunction with the structure has been carried out. At x ⩽10, the existence of hcp (m-DO 19 ) phase is realized. This m-DO 19 phase is found to exhibit the large perpendicular magnetic anisotropy ( K per ) (∼10 7 erg/cc). There is a maximum in K per at about x = 10 . The K per is found to decrease with x ( x >10), which is correlated with the structural transformation.