Preventing dewetting during rapid-thermal annealing of FePt films with enhanced L1 0 ordering by introducing Ag cap-layers

High-order FePt continuous films with a strong (001) texture were fabricated on a glass substrate by introducing Ag layers and rapid thermal annealing (RTA). The dewetting of the (001)-textured FePt was suppressed during RTA with high heating rates (>80K/s). The Ag cap layers not only increased the in-plane tensile stress, but also improved the (001) anisotropy and L10 ordering of the FePt layers. All continuous Ag/FePt bilayer films possessed strong perpendicular anisotropies and high-ordered states irrespective of the Ag layer thickness.