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 6...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 ℃ 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.展开更多
基金Funded by the National Basic Research Program of China(973 Program)(No.2014CB643703)National Natural Science Foundation of China(Nos.51261004,61571142,51562004 and 51461012)+1 种基金National Natural Science Foundation of Guangxi(Nos.2016GXNSFAA380030 and 2016GXNSFFA380007)the Guangxi Key Laboratory of Information Materials Foundation(Nos.161008-Z and 171004-Z)
文摘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 ℃ 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.
