GDMによるFeナノクリスタル膜の生成と磁性 (<特集>薄膜)

概要

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The gas-deposition method (GDM) was used to fabricate Fe nanocrystalline films. STM observation showed that small particles 15 nm in diameter were produced in the first stage and formed aggregates around 50 nm in diameter. Increasing the pressure difference between the evaporation chamber and the deposition chamber led to a slight reduction in the grain size and a lower coercivity. Mossbauer spectra recorded at room temperature and 4.2 K consisted of a crystalline component (α-Fe) and a bondary component with a smaller hyperfine field than that of α-Fe and a small area fatio. No oxide subspectrum was observed even at 4.2 K. The magnetization of the samples, which was around 95% of that of bulk α-Fe, along with the Mossbauer data, revealed that Fe nanocrystals prepared by the GDM have good oxidization resistance.
社団法人日本磁気学会の論文
1997-04-15