L1 FePt: Ordering, Anisotropy Constant and Their Relation to Film Composition

• Published in: IEEE transactions on magnetics Vol. 49; no. 7; pp. 3284 - 3291
• Main Authors: Barmak, Katayun, Wang, Bincheng, Jesanis, Andrew T., Berry, David C., Rickman, Jeffrey M.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.07.2013; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Anisotropic magnetoresistance; Annealing; Heating; Isothermal processes; Kinetic theory; Kinetics; L1 _{0} FePt; Magnetism; magnetocrystalline anisotropy; Metals; order parameter; ordering kinetics; Temperature measurement

The L1 0 phase in FePt films with compositions in the range of 47-50 at.%Pt is found to form more readily (lower kinetic ordering temperatures), to have a higher degree of tetragonality (lower c/a), to be more perfectly ordered (higher values of the order parameter) and to have higher values of magn...