書誌事項
- タイトル別名
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- HAADF-STEM Observation of Partially Ordered Ni<SUB>4</SUB>Mo Alloys
- 部分的に規則化したNi4Mo合金のHAADF-STEM観察
- ブブンテキ ニ キソクカ シタ Ni4Mo ゴウキン ノ HAADF STEM カンサツ
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抄録
Partially ordered Ni4Mo alloys were observed for the first time at an atomic resolution with high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM). The Mo atomic columns in the D1a ordered structure were clearly visualized as bright square dots in the HAADF-STEM image. It was found that the ordered regions were observed with a high contrast in the defocus condition a little overfocused from the Scherzer defocus (Δf=\sqrtCS·λ) which is the condition for the smallest electron probe in STEM. The phenomenon was interpreted successfully by using the approximate imaging theory for HAADF-STEM proposed by Jesson et al. Using the present experimental and simulation results, an approximate imaging theory for visualizing short range ordered state in binary alloys, such as the Ni4Mo alloys, is proposed.
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 65 (5), 414-418, 2001
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001206491309440
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- NII論文ID
- 10007481122
- 130007341853
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 5780869
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- データソース種別
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- JaLC
- NDL
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