Abstract
In this work, the crystal structure and hysteretic magnetic properties of equiatomic single-crystal CoPt/MgO films prepared by magnetron sputtering and their modifications after heat treatment are studied. A perpendicular magnetic anisotropy is obtained in annealed films in a film thickness range of 2 < d ≤ 16 nm. The correlation between the magnitude of magnetocrystalline anisotropy constant of CoPt films and the order parameter of the L10 superstructure of these alloys is ascertained. The influence of the single-crystal MgO substrate on the structure and magnetic properties of the films of equiatomic CoPt alloys is also investigated.
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