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Multilayers Ag/[Ag2Se(0.1 nm)/FePt(1 nm)]10 were alternately deposited on a glass substrate and subsequently annealed by rapid thermal process (RTP) at 800°C for 3 minutes. After RTP, the interface between FePt and Ag2Se was intermixed to form the particulate films. The grains size of the L10 FePt decreased from 9.8 nm to 7.7 nm when the total thickness of Ag2Se intermediate layer increases to 1 nm. The Fe layers with thickness of 1 nm, 3 nm, 5 nm were deposited on FePt-Ag2Se particulate films at room temperature. The Fe/(FePt-Ag2Se) particulate film shows perpendicular magnetization. The magnetization was increased and coercivity was decreased with Fe layer thickness. When the Fe layer thickness increased up to 5nm, two-steps in-plane magnetization curve was found. The magnetization reversal was occurred by the domain wall nucleation and propagation from Fe layer into FePt-Ag2Se layer.