Abstract
A series of FePd based alloy films were deposited on glass substrates by DC magnetron sputtering. The Ag toplayer effect was studied using FePd(67.5 nm)/Ag(3.875, 7.75, 15.50, 31 and 38.75 nm) films annealed at 600 °C for different time in order to find the role of the Ag toplayer in disorder-order of FePd film. The results show that the Ag toplayer can accelerate the phase transition from FCC to FCT in films. The magnetic easy axis of the crystallites in this film is in-plane of substrate. The Ag toplayer can greatly enhance the coercive of FePd films. When the thickness of Ag is equal to 31 nm, the film has a very large in-plane coercivity of 2.8 kOe and a very low out-of-plane coercivity of 1.04 kOe.
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