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標題: Magnetic properties and microstructure of FePtB, FePt(B–Ag) granular films
關鍵字: Granular film
Perpendicular magnetization
摘要: Multilayers [FePt(1 nm)/B(t nm)]10 (t=0.05–0.6) were alternately deposited on a glass substrate and subsequently annealed by the rapid thermal process (RTP) at 800 °C for 3 min. After RTP, FePt and B layers intermix to form the FePtB film with (0 0 1) texture. The ordering degree of FePt was slightly increased with doped B. The (Fe–Pt)100−xBx (x=0, 5, 10) films show perpendicular magnetization and the minor FeB phase was indexed in isotropic (Fe–Pt)100−xBx (x=30, 40, 60) films. By adding Ag into (Fe–Pt)95B5 film, the ordering degree was slightly increased in (Fe–Pt)95(B0.9Ag0.1)5 film. In (Fe–Pt)100−xBx (x=5, 10) and (Fe–Pt)95(B0.9Ag0.1)5 granular films, the intermixed B or Ag atoms were diffused among FePt grain boundaries to isolate and refine FePt grains uniformly with average grain sizes of 20, 15, and 6.7 nm, respectively.
Appears in Collections:材料科學與工程學系



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